Gross Anatomy Of The Spinal Cord

Below the spinal cord tapers off into the conus medullaris from the apex of which a prolongation of the pia mater the filum terminale internum descends to attach to the back of the coccyx. Figure 141a Gross Anatomy Of The Spinal Cord Gross Anatomy of the Spinal Cord.

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Cross-Sectional Anatomy of Spinal Cord.

Gross anatomy of the spinal cord. The spinal cord forms a nearly cylindrical column that is situated within the spinal canal of the vertebral column. Gross Anatomy of the Spinal Cord. Features of the Spinal Cord.

Anatomy of the Spinal Cord Gross Anatomy and Relationship to Vertebral Levels Anchored to the dura by the dentate denticulate ligaments the spinal cord 15 18 22 29 36 extends from the level of the cranial border of the atlas where it is continuous with the medulla to the lower border of the first lumbar vertebra. According to some estimates females have a spinal cord of about 43 centimeters cm while males have a spinal cord of about 45 cm. It is contained by the thecal sac a continuation of the intracranial dura mater and extends from the corticomedullary junction at the foramen magnum of the skull down to the tip of the conus medullaris.

The vertebral column grows faster than the spinal cord therefore the lower end of the spinal cord gradually shifts to a higher level. Spinal Cord Gross Anatomy. Each segment of the spinal cord provides several pairs of spinal nerves which exit from vertebral canal through the intervertebral foramina.

SPINAL CORD PROF DR NASARUDDIN ABDUL AZIZ Management Science University email_address 2. The spinal cord along with the brain makes up the central nervous system CNS. The spinal cord is a cylindrical structure greyish-white in colour.

Anatomy of spinal cord. Gross Anatomy and Some features of Internal Structure The upper end of the spinal cord becomes continuous with the medulla oblongata at the level of the upperborder of the first cervical vertebra. Cervical and Lumbar Enlargements Each spinal nerve has two roots which contain axons with different functions.

The spinal cord like the brain consists of two kinds of nervous tissue called gray and white matter. The spinal cord or spinal medulla is the most important content of the vertebral canal. Like the vertebral column the spinal cord is divided into segments.

Just like other parts of the CNS the spinal cord is comprised of white and gray matter. The spinal cord begins as a continuation of the medulla oblongata of the brain at the level of the foramen magnum in the skull. Up to the 3 rd month of intrauterine life spinal cord extends through the entire length of vertebral canal.

A cross section of the cervical region of the spinal cord. 1 the dura mater which is attached to the lateral surface of the spinal cord by the denticulate ligament 2 the arachnoid and 3 the pia mater Fig. It has a relatively simple anatomical course.

Gray matter has a relatively dull color because it contains little myelin. The spinal cord is roughly cylindrical and begins superiorly at the foramen magnum in the skull where it is continuous with the medulla oblongata of the brain. 8 cervical 12 thoracic 5 lumbar 5 sacral and 1 coccygeal.

OBJECTIVES describe the external structure of the spinal cord draw and describe the internal structure of the spinal cord draw and describe the ascending and descending tracts within. It then travels inferiorly within the vertebral canal surrounded by the spinal meninges containing cerebrospinal fluid. Gross Anatomy of the Spinal Cord.

The narrated lecture presentation and accompanying lecture slides are intended primarily for medical dental and allied health students who wish to efficiently learn the anatomy of the spinal cord. Three meningeal coverings surround the spinal cord. Cervical thoracic lumbar sacral and coccygeal.

The length of the spinal cord varies from person to person. Along its course the spinal cord gives rise to 31 pairs of spinal nerves. The spinal cord is the part of the central nervous system that is found within the spinal canal of the vertebral column.

Each dorsal root has a ganglion which contains the cell bodies of sensory neurones that transmit information into the spinal cord from skin muscles joints and viscera. The Spinal Cord. The spinal cord arises cranially as a continuation of the medulla oblongata part of the brainstem.

Here I discuss the gross anatomy of the spinal cordKey Takeaways- The spinal cord starts at the medulla oblongata and extends to the conus medullaris infe. There are 8 pairs of cervical 12 thoracic 5 lumbar 5 sacral and 1 coccygeal pair of spinal nerves a total of 31 pairs. An Online Learning Module is a concise yet high-yield introductory tutorial or review on spinal cord anatomy.

It terminates inferiorly in the lumbar region. Spinal cord is the lower cylindrical part of central nervous system that is located in the vertebral canal. It contains the somas dendrites and proximal parts of the axons of neurons.

It is a long tubular structure comprised of nervous tissue extending from the cervical to the lumbar region of the vertebral column.

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