A decrease in the number of voltage-gated Ca2+ ion channels in the presynaptic terminal would
A. enhance transmission across the synapse.
B. reduce or inhibit transmission across the synapse.
C. have no effect on transmission across the synapse.
D. alter receptors on the postsynaptic membrane.
E. increase exocytosis.
B
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________ tissue is excitable and specialized for rapid communication by means of electrical and chemical signals.
Fill in the blank(s) with the appropriate word(s).
Thyroid stimulating hormone (TSH) is produced by the ________
A) thyroid gland B) hypothalamus C) anterior pituitary D) posterior pituitary
Which of the following is not a function of the kidneys?
A. Secreting hormones that stimulate thirst B. Regulating the pH of body fluids C. Regulating blood pressure D. Playing a role in erythrocyte production E. Playing a role in the production of vitamin D
The ________ system provides protection, water retention, thermoregulation, and vitamin D production.
A. muscular B. digestive C. lymphatic D. integumentary E. skeletal