Anabolic steroids are variants of the male sex hormone ____
a. estrogen
b. progesterone
c. testosterone
d. prolactin
c
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An adolescent grows in height mainly because of events that occur in the __________ of the skeleton.
A. medullary cavities B. metaphyses C. endosteum D. epicondyles E. hemopoietic tissue
In skeletal muscle, the dihydropyridine and ryanodine receptors are linked to allow for __________ Ca2+ release that is independent of local Ca2+concentrations
Fill in the blank with correct words.
The opening that permits blood to flow between the atria of the fetal heart is (the)
A) ductus venosus. B) ligamentum arteriosum. C) foramen ovale. D) ductus arteriosus. E) None of the answers are correct.
The type of muscle that is found in blood vessel walls is ________ muscle.
A. skeletal B. smooth C. cardiac