Which ligament of the knee initiates the knee-jerk reflex when tapped?
A) the medial patellar retinacula
B) the patellar ligament
C) the lateral patellar retinacula
D) the extracapsular ligament
B
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The functions of saliva include
A. moistening, binding and dissolving food particles; beginning chemical digestion of carbohydrates; and cleansing the teeth and mouth. B. moistening, binding and building up food particles; beginning mechanical digestion of fats; and cleansing the teeth and mouth. C. moistening, binding and dissolving food particles; beginning chemical digestion of proteins; and cleansing the esophagus. D. moistening, binding and building up food particles; beginning chemical digestion of carbohydrates; and cleansing the esophagus.
The rapid rise and fall in force produced by a muscle fiber after a single action potential is a(n)
A) tetanus. B) unfused tetanus. C) twitch. D) motor end plate potential. E) muscle action potential.
The need to have two parents caring for hatchlings appears to be the reason that many species of birds are monogamous
But if the value of monogamy lies in rearing a brood successfully, why is extra-pair copulation so common among monogamous species of birds?
The aroma of cookies baking in the kitchen reaches you in the living room. The distribution of this odor throughout the house is an example of
A. osmosis. B. filtration. C. diffusion. D. dialysis. E. active transport.