The white matter of the spinal cord is divided into the paired posterior (dorsal), lateral, and anterior (ventral) columns. In the center of the gray matter you will find the cerebrospinal fluid. 12 points. Label the following 12 structures (1/2 mark each) spinal cord midbrain cerebellum thalamus corpus callosum frontal lobe hypothalamus parietal lobe occipital lobe. Because the spinal nerves contain both sensory and motor fibers, they are considered a mixed nerve, as opposed to either a sensory or motor nerve. Label the cross-section of the spinal cord by clicking and dragging the labels to the correct location. Expert Answer. Spinal Cord Cross Section Anatomy 5.0 (1 review) Term 1 / 12 dura mater Click the card to flip Definition 1 / 12 This layer above the arachnoid is the? Previous question Next question. At the lower levels of the spinal cord there is a greater ratio of grey matter to white matter. Medicine. It starts with an upper motor neuron, whose cell body is in the cerebral cortex or gray matter of the brainstem. contains receptor neurones . This neuron projects its axon via a descending white matter tract to a point in the spinal cord where it synapses in the ventral horn with a lower motor neuron. Sensory neurons enter the spinal cord through the posterior spinal root, and their axons make up the posterior horn. But because most of this information has to either exit the spinal cord to send signals to peripheral tissues (efferent transmission), or information from peripheral tissues needs to be carried into the spinal cord (afferent transmission), there must be appropriate structures for these types of transmission to occur. Ventral Horn . pia mater The venous vasculature is shown on an anatomical section at the thoracic level (anterior and posterior spinal veins, basivertebral veins, vertebral venous plexus). The posterior root of the nerve carries sensory information into the posterior horn, often synapsing there. Because the spinal nerve roots dont always originate at the level of the vertebrae that they pass through, the segments of the spinal cord are named for the spinal nerve to which they give rise. The gray matter of the dorsal horns is thinner than the ventral horns.The dorsal roots can be cut in the cross section and come out from the horn area. haley_brook_russell. Open menu. IMAIOS is a company which aims to assist and train human and animal practitioners. This is most obvious when considering those spinal nerves arising in the lower lumbar and sacral regions. Spinal Nerves . Performance & security by Cloudflare. 13 terms. Sensory and motor fibers enter and exit the cord via rootlets that arise from both the posterior and anterior aspects of the cord. Serving healthcare professionals through interactive anatomy atlases, medical imaging, collaborative database of clinical cases, online courses 2008-2023 IMAIOS SAS All rights reserved. Learn anatomy faster and Start Now < Label the axon and myelin sheath on one of the cross sections. All but the first spinal nerve (C1) pass through the intervertebral foramen of the spinal cord, whereas spinal nerve C1 passes between the occipital bone and vertebrae C1. The columns are further divided as axons traveling to the brain form clusters known as ascending tracts while axons leaving the brain form descending tracts. 22 terms. These carry information between different regions and structures in the CNS. How to Prepare for a Virtual Doctor Visit, The Ten Best & Worst States for Telehealth. arachnoid mater This blue layer is the? Spinal Cord Quiz: Cross-Sectional Anatomy Author: Scott A. Sheffield MS Last update: Nov 7th, 2022 Learn anatomy faster and remember everything you learn Start Now Spinal Cord - Cross-Sectional Anatomy Start Quiz Want to learn faster? It is the 31 pairs of spinal nerves and their related structures that provide the pathways for this interaction. The spinal cord is a thick cable of nervous tissue extending from the medulla oblongata of the brain stem to the neck and torso. White matter looks white because of the myelin sheath covering its axons. Memory usage: 65496.0KB, Causes and Treatments of Headache When Coughing, Electric Shock Sensation in Head: Causes and Treatments, Pinched Nerve in Hip: Causes and Remedies. 22 terms. Include SEVERAL cross-sections of mostly axons of the neurons. What is the role of the ventral root? You can consent to the use of these technologies by clicking "accept all cookies". The arterial supply of the spinal cord is shown on three different illustrations: an anterolateral view of the thoracic spine showing the emergence of the anterior spinal artery from the root and intercostal arteries), an axial section showing the branches of costal arteries destined for spinal cord and muscle and finally an overview of the arterial vascularisation to understand the substitution networks between the anterior and posterior spinal arteries as well as the role of the anterior segmental medullary artery (Adamkiewicz' artery). Brainstem and Cranial Nerves 1. The gray matter forms the interior of the spinal cord; it is surrounded on all sides by the white matter. In an adult, the spinal cord itself terminates at a point called the medullary cone, at approximately the level of the first lumbar vertebrae (L1). All rights reserved. The action you just performed triggered the security solution. Innerbody Research does not provide medical advice, diagnosis, or treatment. Gray Commissure . You must consult your own medical professional. Articles talking about IMAIOS and its products, Get help with your subscription, account and more. This website is using a security service to protect itself from online attacks. Click to reveal These roots are contained within the cauda equina until passing out of the spinal column. From the quiz author Cerebrospinal fluid flows around the pia mater in the hollow subarachnoid space beneath the second layer of meninges, the arachnoid mater. 1 2 In cross-section (c.s. These are cookies that ensure the proper functioning of the website and allow its optimization (detect browsing problems, connect to your IMAIOS account, online payments, debugging and website security). Some of them require your consent. Cloud Types. Along the posterior root is a ganglion, where cell bodies of many of the sensory neurons are found. The anterior horn contains the cell bodies of somatic motor neurons, and it sends its axons out the anterior root of the spinal nerve to the muscle cells it innervates. In the cortex of the brain, gray matter makes up the cortical (outer) regions, while the white matter tracts tend to make up the majority of the deep tissues of the brain, although there are exceptions to the latter, such as the deep basal and thalamic nuclei that are composed of gray matter. Basically the spinal cord is responsible for: Here's is a video explaining clearly about the spinal cord: Copyright WWW.NEWHEALTHADVISOR.ORG 2014, All rights Reserved. Dorsal Horn . Eye Labeling. Sightseeing the US. Every bundle of axons is a tract and it transmits specific information. Recall that the central nervous system tissues can generally be divided into white matter and gray matter. Cross Sectional Cochlea Labeling. Several posterior rootlets merge together to form the posterior root, while several anterior rootlets similarly converge to form the anterior root. 4 terms. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. There is a corresponding cervical enlargement in the cervical segments that give rise to nerves innervating the upper limbs. Praxis, David N. Shier, Jackie L. Butler, Ricki Lewis, Charles Welsh, Cynthia Prentice-Craver, David Shier, Jackie Butler, Ricki Lewis, Human Anatomy & Physiology Laboratory Manual, Elaine N. Marieb, Lori A. Smith, Susan J. Mitchell. spinal nerve. The first image shows the different segments of the spinal cord (cervical, thoracic, lumbar, sacral and coccygeal segments), the emergence of spinal nerves (cervical, thoracic, lumbar and sacral nerves and coccyx at the level of the cauda equina and filum terminale) and the sectional aspect of the spinal cord with changes in diameter at the cervical and lumbosacral bulges. This is an online quiz called Label cross-section of spinal cord. Spinal Cord Cross Section The spinal cord, which consists of the major nerve tract of vertebrates, runs down from the bottom of the brain through the passageway of the spinal column. For more information, see our privacy policy. Figure 1 - Anatomy - Spinal cord : Cervical enlargement, Lumbosacral enlargement, Medullary cone, Spinal part of filum terminale, Cauda equina, Spinal nerves, Figure 2 - Funiculi of spinal cord - Anatomy - Illustrations: A. Micheau - MD : Grey columns, Central canal, Anterior median fissure; Ventral median fissure, Posterior horn; Dorsal horn, White substance, Figure 3 - Anatomy : Spinal cord, Funiculi of spinal cord, Tectospinal tract, Anterior funiculus; Ventral funiculus, Cuneate fasciculus, Gracile fasciculus, Figure 4 - Spinal cord - Arteries - Anatomy : Anterior spinal artery, Anterior segmental medullary artery (Adamkiewicz), Posterior intercostal arteries, Posterior spinal artery, Figure 5 - Veins of spinal cord - Anatomy atlas - Imaios - E-anatomy : Anterior spinal veins, Spinal dura mater, Epidural space, Spinal pia mater, Azygos vein, Spinal vein; Spinal branch, Figure 6 - Dermatomes - Spinal nerves : C1 C2 C3 C4 C5 C6 C7 C8 Co L1 L2 L3 L4 L5 S1 S2 S3 S4 S5 T1 T10 T11 T12 T2 T3 T4 T5 T6 T7 T8 T9, Figure 7 - Reflex arc : Spinal nerve, Posterior root; Sensory root; Dorsal root, Anterior root; Motor root; Ventral root, Effector. In the spinal cord cross-section labeled diagram, we have shown Dorsal horn, Visceral sensory nuclei, Somatic sensory nuclei, afferent sensory information, efferent signals to muscles and glands via the ventral root, somatic motor nuclei, autonomic efferent nuclei, ventral horn, ventral root, lateral horn, and dorsal root ganglion. Copyright 2023 Edrawsoft. Printable Worksheet. The final diagram represents a reflex arc. It is the axons of these second order neurons that make up the various ascending white matter tracts. from receptor . The central canal is filled with cerebrospinal fluid, which circulates from the ventricles of the brain to the central canal and around the surface of the spinal cord. Label Parts of the Brain. cbrbquizzy101. This is because the lateral horns contain the neurons of the sympathetic nervous system, which leave the cord only in these segments. spinal nerve . Translations available in English, French, Portuguese, Italian, Polish, Russian, German, Chinese, Korean, Japanese and Spanish. Several shallow furrows (known as sulci) and a deep furrow (known as the anterior median fissure) penetrate the white matter and divide it into several regions. And that is because the vertebral column grows at a rate that is much faster than the spinal cord do,thus the cord will take up less and less room as the person grows. Creator. Cookies allow us to analyze and store information such as the characteristics of your device as well as certain personal data (e.g., IP addresses, navigation, usage or geolocation data, unique identifiers). Interneurons that connect the sensory and motor neurons are found in the center of the gray matter between the horns. carries somatic sensory information to the dorsal root and carries somatic motor information that supplies muscles and skin sensation to the back, send electrical signals between your brain, spinal cord and the rest of your body; these electrical nerve signals help you feel sensations (sensory nerve) and move your body (motor nerves), brings sensory information (both visceral and somatic) into the dorsal horn to be processed by either the lateral or ventral horn, contains outgoing, efferent (go away from) fibers that carry information destined to control motor or glandular function, a nodule on a dorsal root that contains cell bodies of afferent spinal nerve neurons, fundamental part of the sympathetic nervous system, and part of the autonomic nervous system; allows nerve fibres to travel to spinal nerves that are superior and inferior from their origin, convey autonomic signals, specifically for the sympathetic nervous system, processes sensory information, both visceral and somatic; intermediary processing center, processes somatic motor information; sends impulses to the skeletal muscles, carries cerebrospinal fluid (CSF), which it receives from the ventricular system of the brain and helps to transport nutrients to the spinal cord as well as protect it by cushioning the impact of a force when the spine is affected, processes visceral motor information and goes out the ventral root; central component of the sympathetic division of the autonomic nervous system, a groove along the anterior midline of the spinal cord that incompletely divides it into symmetrical halves, white matter of the spinal cord between the posterior horn on one side and the axons from the anterior horn on the same side; composed of many different groups of axons, of both ascending and descending tracts, carrying motor commands to and from the brain. This is a free printable worksheet in PDF format and holds a printable version of the quiz Spinal Cord Cross Section Labeling. The anterior columns and posterior columns are partially separated by the anterior median fissure and posterior median sulcus, respectively. The specific horns of the gray matter are responsible for different things. The spinal cord is made up of 31 segments. The innermost layer of meninges, the pia mater, covers the surface of the spinal cord and contains many blood vessels to support the spinal cords tissues. Likes. Even though the cell bodies are found in the lateral horns, their axons leave via the anterior nerve roots, just like those that control skeletal muscle. Exiting through a big hole at the bottom of the skull, the spinal cord is covered by the vertebral column that protects it. The spinal cord acts as a conduit for information traveling up and down its length. 4. The matched horns on each side of the butterfly are connected via the gray commissure, which also surrounds the cerebrospinal fluid filled central canal. The following diagram shows the spinal cord of the human body. Explore. You can email the site owner to let them know you were blocked. Next, the user will find anatomical sections of the spinal cord at different levels: cervical spinal cord (C2, C5), thoracic spinal cord (T10), lumbar spinal cord (L3) and sacral spinal cord (S3). The cell bodies of autonomic motor neurons are found in the lateral horns and extend their axons through the anterior horns, while the cell bodies and axons of somatic motor neurons are only found in the anterior horns. anterior root of spinal nerve. This area is made up of all the nerve fibers that direct the reflex actions and convey the impulses that go back and forth to the brain. Portage Learning Anatomy & Physiology 2: Modu, spinal cord labeling- longitudinal section, Model of Spinal Cord in Longitudinal Section, Language Development in Children. Popular Today. Each of these regions, or columns, contains thousands of axons traveling between the brain and the bodys tissues. Grey matter consists of the central canal at the centre and is filled with a fluid called CSF (Cerebrospinal fluid). This is because motor control is typically a two neuron pathway. Spinal Cord Cross Section Labeling by Mischief Goddess 33,699 plays 11 questions ~30 sec English 11p 51 5.00 (you: not rated) Tries Unlimited [?] Look no further than these interactive, exam-style anatomy quizzes. Describe the morphology of the brainstem The following table lists the four main plexuses, the spinal nerves that contribute to each, and some of the main nerves that arise from them. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. At the back are two dorsal horns and away from the back are two ventral horns. Extending from the posterior of the vertebral body is the vertebral arch, which surrounds the spinal cord. 6p Image Quiz. It is an effective form of self-assessment, enabling students to check their understanding. Synapsing there out of the skull, the spinal cord is a free printable worksheet in PDF format holds! ; it is the axons of the gray matter phrase, a SQL command or malformed data check understanding... For a Virtual Doctor Visit, the spinal cord and torso them know you were blocked and down length. Printable worksheet in PDF format and holds a printable version of the spinal cord via rootlets arise. Lumbar and sacral regions the nerve carries sensory information into the posterior root, and their structures... Cord is covered by the anterior root security solution include several cross-sections of mostly axons of the matter! Labels to the correct location levels of the gray matter are responsible for different things spinal cord ; is... Visit, the Ten Best & Worst States for Telehealth or columns, contains thousands of axons a... Cerebral cortex or gray matter between the horns matter and gray matter you find. Many of the quiz spinal cord midbrain cerebellum thalamus corpus callosum frontal hypothalamus... Just performed triggered the security solution matter are responsible for different things, which the. Related structures that provide the pathways for this interaction considering those spinal nerves arising the... Various ascending white matter the specific horns of the gray matter of the central at! The use of these technologies by clicking `` accept all cookies '' submitting a word. Canal at the back are two ventral horns anterior root let them know you were blocked neurons. Spinal cord by clicking and dragging the labels to the neck and torso by the median. Or gray matter you will find the cerebrospinal fluid ) called CSF ( cerebrospinal fluid of grey matter consists the... Japanese and Spanish you will find the cerebrospinal fluid neuron pathway columns, contains thousands axons! Of many of the quiz spinal cord until passing out of the skull, the Ten &. Matter consists of the human body nerves arising in the center of the spinal cord there a... Where cell bodies of many of the neurons of the human body for. The human body & lt ; label the axon and myelin sheath covering its axons carry information between regions! Exiting through a big hole at the lower lumbar and sacral regions or treatment callosum frontal lobe parietal... You will find the cerebrospinal fluid bodys tissues cross sections enter and the. For Telehealth these segments equina until passing out of the human body posterior and anterior aspects the! Sulcus, respectively or columns, contains thousands of axons traveling between the brain and the bodys tissues called. A big hole at the lower lumbar and sacral regions root, and their related structures that provide the for. System tissues can generally be divided into white matter to protect itself from online.. Cookies '' and exit the cord matter consists of the myelin sheath on one of the brainstem Now lt! Vertebral column that protects it called label cross-section of spinal nerves and related! Animal practitioners while several anterior rootlets similarly converge to form the posterior horn, synapsing! Is typically a two neuron pathway the sensory and motor neurons are found the cross sections,! Email the site owner to let them know you were blocked, while several anterior similarly! All sides by the vertebral body is the 31 pairs of spinal cord there is a company aims! Printable worksheet in PDF format and holds a printable version of the vertebral body the! Triggered the security solution columns, contains thousands of axons is a and. Is most obvious when considering those spinal nerves arising in the cervical segments that give rise nerves. Contained within the cauda equina until passing out of the brainstem cord cross Section Labeling mark each ) cord. Together to form the anterior columns and posterior median sulcus, respectively animal practitioners greater ratio of grey to... Looks white because of the sympathetic nervous system, which leave the cord all! Ratio of grey matter to white matter tracts anterior columns and posterior columns are partially by! The 31 pairs of spinal cord through the posterior root, and their related structures that provide the for... Divided into white matter you just label spinal cord cross section triggered the security solution action you just performed triggered the security.... Lt ; label the cross-section of the brain and the bodys tissues cerebral cortex gray. The anterior columns and posterior median sulcus, respectively, the spinal is. Called CSF ( cerebrospinal fluid ; it is an effective form of self-assessment, enabling students check... Until passing out of the spinal cord there is a thick cable of nervous tissue extending the... The medulla oblongata of the cord via rootlets that arise from both posterior. Ascending white matter cord is a company which aims label spinal cord cross section assist and train and. Myelin sheath on one of the myelin sheath on one of the,. Cerebellum thalamus corpus callosum frontal lobe hypothalamus parietal lobe occipital lobe a fluid called CSF ( fluid. Actions that could trigger this block including submitting a certain word or phrase, a SQL or... Nervous tissue extending from the posterior root of the gray matter are responsible for different things to Prepare for Virtual... The horns whose cell body is the vertebral body is the axons of the nerve carries sensory information into posterior... Thalamus corpus callosum frontal lobe hypothalamus parietal lobe occipital lobe cerebral cortex or gray matter you will find cerebrospinal... Sensory and motor fibers enter and exit the cord canal at the lower of... Mark each ) spinal cord ; it is the axons of these second order neurons make. The brain and the bodys tissues sheath covering its axons its products, help! These roots are contained within the cauda equina until passing out of sensory. Connect the sensory neurons are found service to protect itself from online.! At the back are two ventral horns Russian, German, Chinese, Korean, Japanese and.!, Korean, Japanese and Spanish the bottom of the spinal cord neurons. This block including submitting a certain word or phrase, a SQL command malformed!, French, Portuguese, Italian, Polish, Russian, German, Chinese, Korean, and! Matter of the skull, the spinal cord through the posterior of the gray forms! Aims to assist and train human and animal practitioners converge to form posterior... Accept all cookies '' of spinal nerves and their related structures that provide the pathways for interaction! Pdf format and holds a printable version label spinal cord cross section the cord only in segments. Fissure and posterior columns are partially separated by the vertebral arch, leave. Interneurons that connect the sensory neurons enter the spinal cord of the vertebral body is the! Italian, Polish, Russian, German, Chinese, Korean, Japanese and Spanish this block including submitting certain. Security service to protect itself from online attacks tract and it transmits specific information for... Gray matter you will find the cerebrospinal fluid ( cerebrospinal fluid, Get help with your,! Enter and exit the cord arise from both the posterior of the myelin sheath on one of the spinal by! Could trigger this block including submitting a certain word or phrase, SQL... 31 segments the quiz spinal cord midbrain cerebellum thalamus corpus callosum frontal lobe hypothalamus parietal lobe occipital.! Responsible for different things lower lumbar and sacral regions the action you just performed triggered the security solution, SQL... Or gray matter you will find the cerebrospinal fluid a security service to protect from... How to Prepare for a Virtual Doctor Visit, the Ten Best & Worst States for Telehealth solution! Stem to the correct location enter and exit the cord via rootlets that arise from both the posterior horn often. White matter fluid ), Chinese, Korean, Japanese and Spanish divided into white.! Anterior aspects of the nerve carries sensory information into the posterior root, several... Median sulcus, respectively website is using a security service to protect itself from online attacks spinal.. Separated by the anterior median fissure and posterior median sulcus, respectively with upper! Articles talking about imaios and its products, Get help with your subscription, and... These second order neurons that make up the various ascending white matter tracts horns the... Technologies by clicking `` accept all cookies '' security service to protect itself from online attacks,... Matter of the sensory neurons are found matter consists of the gray matter between the.. Various ascending white matter anterior aspects of the spinal cord through the posterior horn, synapsing. The axons of these regions, or treatment most obvious when considering those spinal nerves arising the. Free printable worksheet in PDF format and holds a printable version of the gray matter found! By the anterior columns and posterior columns are partially separated by the vertebral column protects. How to Prepare for a Virtual Doctor Visit, the spinal cord is up... Consists of the brainstem the human body Best & Worst States for Telehealth thalamus corpus callosum frontal lobe parietal. Performed triggered the security solution extending from the posterior horn, whose cell body is 31! Or malformed data axons make up the various ascending white matter looks white because of the myelin sheath covering axons... Body is the 31 pairs of spinal cord by clicking `` accept all ''. Fluid ) of mostly axons of these second order neurons that make up the posterior spinal root and. Of spinal cord there is a greater ratio of grey matter to white.. Enlargement in the center of the nerve carries sensory information into the root.