The enzyme lactase:
A. is involved directly in the digestion of proteins.
B. is necessary for the breakdown of milk fats.
C. is embedded in the luminal plasma membranes of intestinal epithelial cells.
D. promotes the formation of and storage of bile by the gallbladder.
E. is overproduced and released by secretory cells in the small intestine in the condition known as lactose intolerance.
C
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Indicate whether the statement is true or false
Which of the following events does NOT occur when the semilunar valves are open?
A) AV valves are closed. B) Blood enters the pulmonary artery and aorta. C) Ventricles are in diastole. D) Ventricles are in systole.
Just anterior to the sternocleidomastoid about midway along its length you can palpate this artery
A) external carotid B) facial C) maxillary D) mandibular
Which of the following is not found in the medulla oblongata?
A) reticular formation. B) respiratory rhythmicity centers. C) solitary nucleus. D) nuclei for CN V, VI, and VII. E) olivary nucleus.