Which of the following vessels carries oxygenated blood?
What will be an ideal response?
Pulmonary vein
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Which of the following types of muscle tissue contract when excited by their own autorhythmic muscle fibers?
a) cardiac muscle b) slow twitch oxidative skeletal muscle c) multi-unit smooth muscle d) fast twitch glycolytic skeletal muscle e) All of these choices are correct.
What chemical is secreted by the kidneys when blood sodium is low and (or) blood pressure is low?
A. Renin B. Aldosterone C. ACTH D. Angiotensin
In a farm accident, a man has his arm severed midway between his wrist and his elbow. Which of the following bones was severed?
A. radius B. humerus C. clavicle D. ulna E. both the radius and the ulna
The malleus, incus, and stapes
A. transmit vibrations from the tympanic membrane to the oval window. B. are parts of the cochlea. C. are surrounded by fluid. D. are located in the inner ear. E. are surrounded by endolymph.