Comparative test 3 (Set 12)

The brain is covered by one or more connective tissue ______.

Fishes have _____ meninx.

Amphibians and reptiles have two meninges which include the _____ and the _____.

Mammals and birds have 3 meninges ( because the secondary meninx differentiates into 2 layers) which include: _____, _____, _____.

Describe the pia mater.

The _____ is a vascular network of the pia mater; It secretes most of the cerebrospinal fluid, which circulates between the pia mater and the arachnoid.

Describe the arachnoid.