A feedback mechanism that amplifies the stimulus is called ________.
A. nervous feedback
B. hormone feedback
C. positive feedback
D. negative feedback
Answer: C
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Which of the following statements is NOT true of multiple sclerosis?
A. It is considered a myelin disorder. B. Patients may have disturbances in vision, balance, speech, or movement. C. It is more common in women than men. D. It is most often diagnosed in people over the age of 50.
Normal K+ concentration in extracellular fluid is ________ mEq/L
A) 1.5 B) 1.5-3.0 C) 3.5-5.0 D) 5.5-7 E) 135
Sodium is directly or indirectly controlled through all these mechanisms except
a. the baroreceptor reflexes b. the renin-angiotensin mechanism c. aldosterone activity d. changes in GFR e. altering gastrointestinal absorption
Receptor-mediated endocytosis would be most appropriate in a situation where the cell needs to selectively control the amount of a substance that is taken into a cell.
Answer the following statement true (T) or false (F)