What type of membranes do not open to the exterior, do not contain glands, but do secrete fluid?
A. serous
B. synovial
C. cutaneous
D. gobletal
E. mucous
A
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The myelin on a myelinated fiber in the peripheral nervous system is part of Schwann cells wrapped around the axon
Indicate whether the statement is true or false
Select the correct statement about the function of antibodies.
A) Antibodies may directly destroy "invaders." B) Neutralization is the process by which antibodies cause invading cells to clump together. C) Complement fixation is the main mechanism by which antibodies provide protection. D) The most potent agglutinating agent is IgG.
Cerebrospinal fluid flows within the
A) filum terminale. B) subarachnoid space. C) dura mater. D) pia mater. E) arachnoid mater.
The dura mater surrounding the brain consists of two layers. Give a functional reason for the fact that there are two layers instead of only one.
A. The two layers form a stronger blood-brain barrier. B. Spaces between layers collect blood for return to the venous system. C. Fluid between the layers reduces friction. D. Arteries are sandwiched between the layers. E. The spaces are where cerebrospinal fluid is reabsorbed.