Question

Tela choroidea is the term used for
A. Fused pia mater and grey matter
B. The middle coat of eye
C. Epithalamus and pia mater fused
D. None of the above

Answer 1

Hint: The brain and spinal cord are covered by a membranous covering known as meninges which consist of pia mater, Arachnoid mater, and dura mater.

Complete Answer:
-Meninges that cover the brain is known as cranial meninges and meninges that cover the spinal cord are known as spinal meninges.
-The pia mater is the innermost layer and the dura mater is the outermost layer which is also known as pachymeninx and the arachnoid mater lies in the middle of these two meningeal layers.
-The pia mater sticks to the neuro-epithelial lining present on the epithalamus of the brain ventricles which is known as ependyma which then leads to the formation of choroid plexus (Network of blood vessels) in the ventricles of the brain.

Let us find the correct answer:
Option(A): Pia mater lies above the Cerebral cortex known as the grey matter but they are not fused, Therefore this is an Incorrect option.
Option(B): The middle layer of the eye is known as the choroid, Therefore this is an Incorrect option.
Option(C): Tela choroidea is the term used for pia mater and epithalamus (neuroepithelial lining), Hence this is the Correct option.
Option(D): Since one of the above options is correct, This is an Incorrect option.

Hence the correct answer is option C.

Note: -Tela is a Latin word that means Woven together.
-The arachnoid and pia mater are together known as leptomeninges.
-The main function of Brain meninges is to protect the brain and spinal cord and to support the blood vessels of the brain and spinal cord.
-The choroid layer of Eye and Tela choroidea of the Brain are not the same.