The total surface area is greatest for all the _______.
A. arterioles
B. capillaries
C. large arteries
D. large veins
Answer: B. capillaries
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Blood is supplied to the myocardium by
A) the coronary sinus. B) contact with blood in the pumping chambers. C) the coronary arteries. D) arteries that branch from the pulmonary arteries. E) arteries that branch off the subclavian arteries.
Moving the arm in a circle around the shoulder joint is:
a. flexion b. rotation c. abduction d. extension e. adduction f. circumduction
Define lactation
A) Lactation is the secretion of prolactin by the anterior pituitary gland. B) Lactation is the secretion of oxytocin by the posterior pituitary gland. C) Lactation is the production of milk by the mammary glands. D) Lactation is the act of breastfeeding an infant. E) Lactation is the development of the breasts at puberty.
The epidermis
A. is composed of loose connective tissue. B. is made up mostly of melanocytes. C. is composed of the reticular and papillary layers. D. is thicker than the dermis. E. contains no blood vessels.