This sarcomere depicts relaxed muscle. Which number identifies the M line?
A. 1
B. 3
C. 4
D. 5
C
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The left side of the posterior thoracic wall drains blood into the
A) azygous vein. B) highest intercostal vein. C) hemiazygos vein. D) hemiazygos and highest intercostal veins. E) esophageal veins.
Which bone forms in the tendon of a muscle?
A. Pubis B. Scaphoid C. Calcaneus D. Patella E. Talus
The level of testosterone in the blood is increased by
A. the hypothalamus stimulating the testes to release LH. B. LH causing the interstitial cells to release testosterone. C. a high level of testosterone stimulating the testes to release more LH. D. a high level of testosterone stimulating the hypothalamus.
A megakaryoblast will develop into
a) a red blood cell. b) a white blood cell. c) a platelet. d) either a white blood cell or a platelet. e) none of these choices.