Collagen fibers impart tensile strength to our skin while ________ fibers allow for some stretch and contraction in the dermis during movement.
Fill in the blank(s) with the appropriate word(s).
elastic
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The anterior and posterior cruciate ligaments help to stabilize the __________ joint.
Fill in the blank(s) with the appropriate word(s).
Hyposecretion of cortisol causes
A) goiter. B) diabetes mellitus. C) diabetes insipidus. D) Addison's disease. E) Cushing's disease.
Taste
a. discrimination depends on the ratio of stimulation of the taste buds, which have a variation in relative sensitivity. b. buds are stimulated only by chemicals in solution. c. discrimination does not go beyond distinguishing between the five primary tastes. d. both (a) and (b) above. e. all of these answers.
Which best describes a role of L-type Ca2+ channels in cardiac muscle cells?
A. They function exactly the same in cardiac muscle cells as they do in skeletal muscle. B. They are directly responsible for making cardiac muscle fatigue-resistant. C. They are responsible for preventing tetanic contractions. D. They cause the absolute refractory period to be very brief. E. They act as non-conducting voltage sensors that mediate excitation-contraction coupling.