Which of the following is not a function of the control center within a feedback mechanism?
A. Detects a change in the value of a variable
B. Controls effectors
C. Receives and processes information
D. Establishes a set point
Answer: A
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Erythropoietin (EPO) was first isolated from the urine of anemic patients who had high circulating levels of the hormone. Despite the presence of the hormone that stimulates red cell production, however, these patients were unable to produce adequate amounts of hemoglobin or red cells. Give some possible reasons that the patients' own EPO was unable to correct their anemia.
What will be an ideal response?
A loose gel ground substance with a high density of collagen fibers is characteristic of:
a. loose connective tissue b. hyaline cartilage c. dense connective tissue d. fibrocartilage
The gluteal (maximus, medius, and minimus) and tensor muscles are in the medial group of muscles that move the femur.
Answer the following statement true (T) or false (F)
A male bodybuilder starts taking injections of testosterone (an anabolic steroid on a daily basis. After three weeks, you expect to observe all of the following, except
A) increased sex drive. B) decreased levels of GnRH. C) decreased levels of LH and FSH. D) increased muscle mass. E) decreased nurse cell stimulation.