Old erythrocytes are phagocytized in the
A. lung.
B. spleen.
C. liver.
D. spleen and lung.
E. liver and spleen.
Answer: E
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Which of the following phrases best describes the function of the vertebral curves?
A) to provide resilience and flexibility B) to accommodate muscle attachment C) to improve cervical center of gravity D) to accommodate the weight of the pelvic girdle
Motor neurons are considered the final common pathway because the only way any other parts of the nervous system can influence skeletal muscle activity is by acting on these motor neurons
a. True b. False Indicate whether the statement is true or false
When does the juxtaglomerular apparatus secrete renin?
A. Hyponatremia B. Hyperkalemia C. Hypotension D. All of the answers are correct.
What is the purpose of segmental contractions of the small intestine?
A. propelling the chyme forward B. mixing of intestinal contents C. moving intestinal contents into the colon D. stretching the intestinal wall