Which of the following is not a function of the skeletal system?
A. It protects the viscera.
B. It produces blood cells.
C. It removes toxins from the blood.
D. It stores and releases minerals.
E. It produces vitamin C.
E. It produces vitamin C.
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Which cells would you expect to increase in number during an infection of the CNS?
A. Oligodendrocytes B. Astrocytes C. Microglia D. Ependymal cells E. Schwann cells
Proteases and acrosin are enzymes. How do they function in reproduction?
A) They act to break down the protective barriers around the egg, allowing the sperm to penetrate. B) They direct the sperm to the egg through chemical messengers. C) They neutralize the mucous secretions of the uterine mucosa. D) Their function is unknown.
A neuron might be temporarily unable to transmit an impulse to another if
A) its supply of neurotransmitters is exhausted. B) the neurons are of different types. C) you are asleep. D) there are too many astrocytes present. E) the levels of microglia are too low.
There are two aspects to digestion: chemical digestion and ________ digestion.
Fill in the blank(s) with the appropriate word(s).