Which of the following contains overlapping thick and thin filaments?
A) H band B) A band C) I band D) M line E) Z discs
B
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Increased levels of the hormone ________ will lead to decreased levels of calcium ion in the blood via inhibition of ________
A) thymosin; osteocytes B) calcitonin; osteoclasts C) PTH; osteocytes D) aldosterone; osteoclasts E) cortisol; osteoblasts
Axon endings contain acetylcholinesterase?
a. true b. false
Which of the following is NOT true of sound wave frequency?
A. Sound wave frequency can be reported in waves per second. B. The units for sound wave frequency are hertz (Hz). C. Different sound wave frequencies stimulate specific hair cells in certain portions of the spiral organ. D. Different sound wave frequencies are perceived as different degrees of loudness. E. All of these are true of sound wave frequency.
A fontanel can best be described as a(n):
a. bone in the skull b. unossified area in the infant's skull c. articulation between two skull bones d. small opening