What is the effect of glucagon?
A. It increases blood glucose levels.
B. It lowers levels of blood glucose.
C. It raises blood pressure.
D. It stimulates production of red blood cells.
E. It inhibits gallbladder contraction.
Answer: B
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ANS: B Merkel cells possess intracellular vesicles that resemble those of synapses and furthermore contact sensory nerve endings adjacent to the stratum basale. They have been shown to react to mechanical stimulation
a. Labial glands b. Palatine glands c. Parotid glands d. Sublingual gland e. Submandibular gland
If someone's cardiac output is 4.5 liters per minute, their heart rate may be 90 beats per minute, with a stroke volume of 50 ml.
Answer the following statement true (T) or false (F)
Which of the following is the condition of the skull at birth?
A) The mandible is incomplete. B) The frontal bone has just begun forming. C) The floor and roof of the cranium are incomplete. D) Only the roof of the skull remains incomplete. E) Only the chondrocranium exists.
What is the most important source of heat for the body?
a. internal heat production b. heat gain from the external environment c. respiration d. exercise e. eating