Anterior pituitary acidophil cells secrete:
a. Cortisol
b. Growth hormone
c. Insulin
d. Luteinizing hormone
e. Vasopressin
ANS: B
Because the secretory granules of acidophil cells contain positively charged proteins like growth hormone and prolactin and not negatively charged proteins like luteinizing hormone or folli-cle-stimulating hormone,, the cytoplasm of these cells stains well with acid dyes.
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For a weight to be lifted, which of the following must occur?
A) isotonic muscle contraction with a force less than the load B) isometric muscle contraction with a force greater than the load C) isotonic muscle contraction with a force greater than the load D) either isometric or isotonic muscle contraction with a force greater than the load E) either isotonic muscle contraction with a force greater than the load or a force less than the load
Which chamber makes up the apex of the heart?
A. The left ventricle B. The right ventricle C. The left atrium D. The right auricle E. The right atrium
Lack of exercise during an illness may cause skeletal muscle to undergo
A) hypertrophy B) dysplasia C) atrophy D) regeneration