CNS - Spinal Cord (1)

Question 1

In the spinal cord, is the H-shaped region white matter or grey matter? What is the central canal?

Answer 1

The H-shaped region is grey matter. The central canal is a continuation of the 4th ventricle.

Question 2

In the spinal cord, what is the grey commissure?

Answer 2

This is the section of grey matter that makes up the middle of the H. It joins the left horns to the right horns, and has the central canal running through its centre.

Question 3

In the spinal cord, what are the names of the valleys running down the anterior surface and the posterior surface?

Answer 3

Anterior median fissure, Posterior median sulcus.