Which of the following shows ligand binding at the cell surface?
a) B
b) C
c) D
d) A
e) E
Answer: b
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If you had a genetic disorder resulting in a lack of functional mast cells, you would have a problem with
A) nerve impulse transmission. B) the repair of connective tissue. C) movement of nutrients and waste products to and from cells. D) blood cell production. E) a response to tissue injury.
Which of the following conditions would cause an increase in the heart rate?
A) activation of the parasympathetic nervous system B) acetylcholine stimulation of nodal cells and contractile cells C) activation of the sympathetic nervous system D) decreased blood concentration of carbon dioxide and increased blood pressure E) decreased blood concentration of oxygen and increased blood pressure
All of the following terms of comparison are used correctly EXCEPT
A. the hand is distal to the wrist. B. blood vessels are deep to the skin. C. the right thumb and the left big toe are ipsilateral. D. muscles are superficial to bones. E. the knee is proximal to the ankle.
Cartilaginous joints
A. are common in the skull. B. unite two bones by means of fibrocartilage or hyaline cartilage. C. allow the most movement between bones. D. are found in the lower leg. E. are not found in the pelvic region.