In this illustration of the ear, what structure does number 1 indicate?
A. Tympanic membrane
B. Stapes
C. Incus
D. Vestibule
E. Cochlea
Answer: D
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The term ductus venosus refers to ________
A) damage to the valves in the veins, leading to varicose veins B) a condition of the aged in which the arteries lose elasticity C) a fetal shunt that bypasses the lungs D) a special fetal vessel that allows umbilical blood to bypass the liver
Fever ________
A) production is regulated by chemicals that reset the body's thermostat to a higher setting B) decreases the metabolic rate of the body to conserve energy C) is a higher-than-normal body temperature that is always dangerous D) causes the liver to release large amounts of iron, which seems to inhibit bacterial replication
What type of muscular activity is present in a muscle at rest?
A) There is some activity that causes the muscle to make continual tiny movements. B) There is no activity. C) There are large amounts of short contraction. D) Motor units activate in a random pattern to cause slight constant tension, known as muscle tone. E) Motor units activate partially in a unified wavelike motion.
The T lymphocyte that destroys foreign cells or substances is the ________ T cell
Fill in the blank(s) with correct word