Why is otitis media more common in children than in adults?
A. Children have shorter, more horizontal auditory tubes.
B. Children have longer, more slanted auditory canals.
C. Children have small openings in the tympanic membrane that allow introduction of bacteria.
D. Children are more frequently exposed to pathogens that cause ear infections.
E. Children have smaller, more flexible middle ear bones.
Answer: A
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Many muscles are named for their location (origin and insertion) in the body, particularly in relation to bones. In what body region would you expect the frontalis muscle to originate?
A. The abdominal region B. The cranium C. The pelvic region D. The thoracic region
An increase in dead space results in
A. increases in both alveolar and pulmonary ventilation. B. decreases in both alveolar and pulmonary ventilation. C. a decrease in alveolar ventilation but no change in pulmonary ventilation. D. an increase in alveolar ventilation but a decrease in pulmonary ventilation. E. a decrease in alveolar ventilation but an increase in pulmonary ventilation. F. an increase in alveolar ventilation but no change in pulmonary ventilation.
The ________ forms the inferior edge of the notch between the medial ends of the clavicles.
Fill in the blank(s) with the appropriate word(s).
Straight tubules originate at the seminiferous tubules and form a maze of passageways called the
A) afferent ducts. B) efferent ducts. C) ductus deferens. D) epididymis. E) rete testis