The action of the gastrocnemius is to
a. extend and adduct the femur
b. plantar flex the ankle and flex the knee
c. dorsiflex the ankle and extend the knee
Answer: b. plantar flex the ankle and flex the knee
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Down-regulation
a. refers to the expression of fewer receptors at the cell surface as part of a negative-feedback mechanism. b. refers to the decrease in cortisol secretion that occurs as an animal's metabolism slows down to its basal level. c. occurs in response to too little hormone reaching the target cells. d. is an idiopathic response to endocrine disrupters. e. occurs in response to the excretion of excess hormone by the kidneys.
Match the vitamin with its function in the body.A. Required for the synthesis of clotting factors (prothrombin)B. Is a component of the coenzyme FADC. Promotes calcium and phosphorus useD. Involved in amino acid metabolismE. Primary constituent of coenzyme AVitamin K
Fill in the blank(s) with the appropriate word(s).
A reflex arc requires intervention from the cerebral cortex for a motor response to occur.
Answer the following statement true (T) or false (F)
The influx of positive charges makes the membrane potential more positive and is known as:
A) hyperpolarization. B) repolarization. C) polarization. D) depolarization.