Gross Anatomy Of Spinal Cord

Gross anatomy the spinal cord is part of the central nervous system cns which extends caudally and is protected by the bony structures of the vertebral column. Learn vocabulary terms and more with flashcards games and other study tools.

Chapter 13 The Spinal Cord And Spinal Nerves Ppt Video

Execution of spinal reflexes both somatic and visceral.

Gross anatomy of spinal cord. As a result of differential growth of the spinal cord and vertebral column most spinal cord segments are positioned cranial to their nominally corresponding vertebrae. Spinal cord is surrounded by 3 connective tissue membranes what are they. N it terminates inferiorly in the adult at the level of the lower border of the l1.

It is covered by the three membranes of the cns ie the dura mater arachnoid and the innermost pia mater. Spinal cord gross anatomy internal structure. Chapter 43 spinal cord and spinal nerves.

Gross anatomy the spinal cord measures approximately 42 45 cm in length 1 cm in diameter and 35 g in weight. Like the brain it is composed of grey and white matter however opposite to the brain the grey matter is on the internal aspect of the cord and the white matter tracts are external. 8 cervical 12 thoracic 5 lumbar 5 sacral and 1 coccygeal.

N the spinal cord is roughly cylindrical in shape. Dura mater arachnoid mater and pia mater describe dura mater. Delicate and closely associated with the spinal cord surface.

Along its course the spinal cord gives rise to 31 pairs of spinal nerves. Segments become progressively shorter from the c3 to t2. Spinal cord gross anatomy.

N in the young child it usually ends at the upper border of l3. Meninges of spinal cord. The spinal cord terminates at the level of the first or second lumbar vertebrae as the conus medullaris.

However spinal segment length is variable along the spinal cord in our domestic mammals. It serves as a conduit for the passage of ascending sensory and descending motor tracts to and from the higher centers to the of brain. Spinal cord gross anatomy.

It transmits impulses to and from the brain to the body. Start studying gross anatomy spinal cord. The functions of spinal cord are.

Gross anatomy this chapter deals with the gross anatomy of the structures which lie within the vertebral canal and its extensions through the intervertebral foramina the spinal nerve or radicular root canals. Gross anatomy 8162 views. Structure long and cylindrical 42cm in length and 18cm thick has two enlarged portions o cervical enlargement c4 and t1 receives sensory input from the upper limbs sends motor output to the upper limbs.

N it begins superiorly at the foramen magnum in the skull.

The Nervous System The Spinal Cord And Spinal Nerves Pdf