Changes in the respiratory system that accompany aging include
A. overactive cilia, causing frequent coughing.
B. thickening of the alveolar walls.
C. thinning mucus.
D. slowed swallowing reflex.
Answer: D
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Which hormone stimulates the uptake of glucose by cells, lowering the concentration of glucose in the blood?
A) epinephrine B) cortisol C) insulin D) glucagon
Which of the following statements regarding the tonsils is correct?
A) The tonsils are located on the posterior nasopharyngeal wall. B) The tonsils rarely become swollen enough to obstruct the airway. C) The tonsils are comprised of lymphatic tissue and help to trap bacteria. D) The tonsils are located in the anterior pharynx and filter bacteria.
Which of the following is the primary digestive organ involved in regulating the composition of circulating blood?
A) pancreas B) stomach C) small intestine D) large intestine E) liver