Vitamin D deficiency, especially in older people, results from lack of exposure to the
sun.
Indicate whether the statement is true or false
TRUE
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Which of the following processes is most important to continuation of the human
species? A) Movement B) Respiration C) Reproduction D) Responsiveness
Which of the following effects of aging impacts the oxygen carrying capacity of the cardiovascular system?
A. The liver may metabolize drugs differently as it ages. B. The rate of movement through the large intestine increases with age. C. The enamel on the teeth thins and the gingiva recedes allowing for increased tooth decay and loosening of the teeth. D. Less intrinsic factor is produced resulting in less vitamin B12 absorption leading to possible pernicious anemia.
The diffusion of water through a selectively permeable membrane is a process called:
a. osmosis b. dialysis c. filtration d. pinocytosis
Which statement is correct?
a. In presynaptic inhibition, another neuron inhibits an excitatory presynaptic input. b. An IPSP depresses information fed into the cell from an inhibitory presynaptic input. c. Not all axon terminals of an inhibitory neuron release inhibitory neurotransmitter. d. During presynaptic inhibition, there is no change in presynaptic membrane potential. e. An IPSP decreases the potential of the postsynaptic neuron.