Question

these are networks of capillaries found in the walls of the ventricles of the brain that produce cerebrospinal fluid.
choroid plexuses
lateral apertures
interventricular foramina
brachial plexuses
8 multiple choice 1 point
the pharmaceutical industry has created drugs that:
are a synthetic form and mimic chemicals occurring naturally in the body
keep neurotransmitter receptors sites open
keep neurotransmitter receptors sites closed
all of the above are true
9 multiple choice 1 point
the procedure to retrieve csf from the area surrounding the spinal cord is called:
spinal tap
lobotomy
vasectomy
root canal

Explanation:

Question 7 (First Multiple Choice)

The question is about structures in the brain that produce cerebrospinal fluid. Choroid plexuses are networks of capillaries in the ventricular walls that produce CSF. Lateral apertures are openings for CSF flow, interventricular foramina connect ventricles, and brachial plexuses are in the neck/arm for nerves. So the correct option is the one with choroid plexuses.

Pharmaceutical drugs can be synthetic mimics of natural body chemicals (like synthetic hormones). Some drugs act as agonists (open receptor sites) or antagonists (close sites), so all the first three statements can be true in different drug types. Thus "all of the above" is correct.

A spinal tap (lumbar puncture) retrieves CSF from around the spinal cord. Lobotomy is brain surgery, vasectomy is male sterilization, root canal is dental. So the correct option is spinal tap.

Answer:

A. choroid plexuses

Question 8 (Second Multiple Choice)