What is the average resting heart rate for an adult?
A. 80 beats/min
B. 75 beats/min
C. 60 beats/min
D. 70 beats/min
Answer: D
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The cranial nerve that innervates smooth muscle and glands of the heart, lungs, larynx, trachea, and most abdominal organs is the ___________ nerve
A. facial B. trigeminal C. vagus D. accessory E. hypoglossal
The endocrine system consists of glands that:
a. release chemicals into ducts b. release chemicals into the blood c. release chemicals into body cavities d. all of the above
Vagal influences on the heart result in
a. enhanced calcium permeability at the SA node b. enhanced potassium permeability at the SA node c. less frequent depolarization of the SA node d. both a and b e. both b and c
Parathyroid hormone is antagonized by
a. thyroid hormone. b. adrenocorticotropic hormone. c. calcitonin. d. antidiuretic hormone. e. aldosterone.