The thyroid gland is located
A. anterior to the atria of the heart.
B. immediately anterior to the trachea.
C. immediately superior to the larynx.
D. immediately posterior to the cricoid cartilage.
B
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What prevents blood from clotting?
A) heparin B) fibrin C) platelets D) fibrinogen
The corpus callosum
A. consists of a broad band of gray matter. B. is found at the base of the transverse fissure. C. connects the frontal lobe to the parietal lobe. D. is a band of commissural fibers that connects the right cerebral hemisphere to the left cerebral hemisphere. E. connects the frontal lobe to the occipital lobe.
Pain impulses are first processed in the
A) dorsal root ganglion. B) motor cortex of the cerebrum. C) gray matter of the posterior horn. D) cerebral cortex.
Defecation following a meal is usually the result of
A. segmentation movements stimulated by the duodenocolic reflexes. B. peristalsis in the small intestine initiated by entry of chyme into the duodenum. C. mass movements stimulated by the gastrocolic and duodenocolic reflexes moving feces towards the rectum.