You are an airborne molecule that dissolves in the fluid covering the olfactory epithelium. Which of the following must you do in order to depolarize neurons in the olfactory epithelium?
A. Stimulate mitral cells
B. Bind to receptor molecules on the olfactory hair membrane
C. Release acetylcholine
D. Lower the threshold of the cell
E. Cause proliferation of basal cells
Answer: B
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Tremor at rest, shuffling gait, stooped posture, and expressionless face are characteristics of ________
A) Parkinson's disease B) Alzheimer's disease C) cerebellar disease D) Huntington's disease
Which of the following statements is/are TRUE of the growth of the skeleton?
A) It begins to ossify at six weeks of gestational age. B) All bone formation ceases immediately after the end of adolescence. C) Calcification of bones does not occur until an infant begins to learn to walk. D) All of the answers are correct. E) None of the answers are correct.
The movement of molecules out of the digestive tract into circulation or the lymphatic system is
A. secretion. B. peristalsis. C. chemical digestion. D. absorption.
Listening to body sounds is called:
A) auroscopy B) auscultation C) otoscopy D) audioscopy