The dorsal rami of spinal nerves ________
A) serve the muscles of the intercostal spaces and skin and muscles of the anterior trunk
B) form nerve plexuses that serve the limbs
C) serve the skin and muscles of the posterior body trunk
Answer: C
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Which are characteristic of type A blood?
a: Has anti-A antibodies b: Has anti-B antibodies c: Has surface antigen A on its erythrocytes d: Has surface antigen B on its erythrocytes e: Has neither surface antigen A nor B on its erythrocytes f: Will agglutinate with blood type B A. b, c, d, f B. a, c, d, f C. a, d, f D. b, c, f E. a, c, f
The sinoatrial node is the heart's normal pacemaker because
a. it has the fastest natural rate of autorhythmicity. b. it has both sympathetic and parasympathetic innervation. c. it lies in the right atrium. d. activation of K+ channels occurs more rapidly in this region than elsewhere in the heart. e. none of these answers.
What is the function of thyroxine?
A. It increases the metabolic rate. B. It raises blood sugar. C. It stimulates the kidney to reabsorb water. D. It stimulates protein synthesis.
The salivary glands located just anterior to the ear are the
A. parotid glands. B. submandibular glands. C. buccal glands. D. labial glands. E. sublingual glands.