The choroid plexus is composed of
A) lymphatic vessels.
B) blood vessels.
C) nerve fibers.
D) ganglia.
E) subarachnoid granulations.
A(n) ________ is a direct connection between an arteriole and a venule.
A) arteriovenule joint
B) collateralization
C) arteriovenus anastomosis
D) arteriovenule junction
E) arch
Administration of a medication in the elderly can result in a much higher dosage than
the clinician might intend because
A) the metabolic rate in the elderly is so high.
B) the kidneys of the elderly do not work well.
C) the aged have less water content in the body.
D) other medications they take might enhance the concentration of another drug.
Sperm cannot fertilize an oocyte until they
A) undergo capacitation.
B) undergo meiosis.
C) lose their flagellum.
D) are in the vagina for 3 days.
E) are activated by sustentacular cells of the vagina.
In rigor mortis
A) the myosin heads are attached to actin.
B) ATP is depleted.
C) calcium ions keep binding to troponin.
D) sustained contractions occur.