Spinal Cord in Rabbit
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Zoology

Spinal Cord in Rabbit

By Dayyal Dg.
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Free photo little rabbit.
Free photo little rabbit. Freepik / @alexeyzhilkin

The spinal cord is the second part of the central nervous system. The medulla oblongata continues behind into the spinal cord. It comes out through the foramen of the magnum and runs through the neural canal of the vertebral column. Just like the brain the spinal cord is also covered by three meninges viz., outer duramater, middle arachnoid membrane, and inner diameter.

In Rabbit, the spinal cord is elongated, more or less cylindrical, bilaterally symmetrical, and slightly flattened in the dorsoventral direction. The spinal cord terminates into a tapering filament called filum terminale which lies in the urostyle. The spinal cord is swollen at the level of fore limbs and hind limbs to form two conspicuous enlargements Anteitor enlargement of the spinal cord present at the level of fore limbs is called brachial enlargement, while the posterior enlargement lying between hind limbs is called sciatic enlargement.

There are two longitudinal fissures in mid mid-dorsal and mid-ventral regions of the spinal cord. They are known as dorsal fissure and ventral fissure. The ventral fissure is more conspicuous than the dorsal fissure and it contains blood vessels. The fissures divide the spinal cord into right and left halves.

In the center of the spinal cord, there is a canal called the central canal. This canal is lined by a single layer of ciliated epithelial cells. Anteriorly, it is in continuation with the cavities of the brain and ends blindly at the posterior end. Surrounding the central canal there is a grey matter. It consists of nerve cell bodies and proximal parts of axons. The corners of the grey matter are produced into a pair of dorsal and ventral horns.

The grey matter is surrounded by white matter. The white matter consists of myelinated parts of axons. The white matter is divided into four zones, viz., a dorsal funiculus, ventral funiculus, and two lateral funiculi. This zonation is formed due to the horns of the grey matter stretched into the white matter. The spinal cord's dorsal half is sensory and the ventral half is motor in function.

T.S. of Spinal Cord
T.S. of Spinal Cord
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Dayyal Dg.. “Spinal Cord in Rabbit.” BioScience. BioScience ISSN 2521-5760, 29 May 2017. <https://www.bioscience.com.pk/en/topics/zoology/spinal-cord-in-rabbit>. Dayyal Dg.. (2017, May 29). “Spinal Cord in Rabbit.” BioScience. ISSN 2521-5760. Retrieved November 23, 2023 from https://www.bioscience.com.pk/en/topics/zoology/spinal-cord-in-rabbit Dayyal Dg.. “Spinal Cord in Rabbit.” BioScience. ISSN 2521-5760. https://www.bioscience.com.pk/en/topics/zoology/spinal-cord-in-rabbit (accessed November 23, 2023).
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