How many homologous chromosome pairs are present in most human cells?
A) 23 B) 4 C) 46 D) 18
Answer: A
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Consuming a meal high in salt will
A) drastically increase the osmolarity of the blood. B) result in a temporary increase in blood volume. C) decrease thirst. D) cause hypotension. E) activate the renin-angiotensin mechanism.
Inhibition of gastric secretion following a meal is accomplished by
a. the enterogastric reflex b. inhibition of the pyloric gland area by vagal stimulation c. a high concentration of H+ in the antrum and duodenum, which inhibits gastric secretion d. a and b e. a and c
Match the term with the appropriate description.A. Lipids that cause smooth muscle relaxation and vasodilationB. Lymph nodules aggregated in the small intestinal wallC. Rounded epithelial structures found in the medulla of thymusD. Areas of a lymph node where lymphocytes divideE. A chemical released from mast cells that causes vasodilationPeyer's patches
Fill in the blank(s) with the appropriate word(s).
Which part of the electrocardiogram (ECG) would most be affected by abnormally slow depolarization of the ventricles?
A) R-T interval B) QRS wave C) T wave D) P wave