The innermost meninges surrounding the central nervous system in frog and man respectively are

Pia mater

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Arachnoid and pia mater

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Pia mater and dura mater

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Arachanoid and dura mater

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Solution

The correct option is A Pia mater
In amphibians, reptiles and birds, there are two meninges. An outer dura mater and inner pia mater. The space between these membranes is subdural space and is filled with cerebrospinal fluid. In mammals, there are three meninges, an outer tough membrane called dura mater, middle arachnoid membrane and an inner thin vascular membrane called as pia mater.

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Similar questions

The insulating sheath covering the axon is called

(a) plasmalemma (b) neurilemma

The outermost cover lying below the skull and vertebral column is doubly thick and is called Dura mater.

State whether the following statements are true (T) or false (F).

(a) The main component of the white matter of the brain is perikaryon. (T/F)

(b) The arachnoid layer fits closely inside the pia mater (T/F)

(d) Dura mater is the outermost layer of the meninges. (T/F)

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