A feedback mechanism that returns the body to homeostasis is ________.
A. nervous feedback
B. hormone feedback
C. negative feedback
D. positive feedback
Answer: C
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The thermoneutral zone for skin vasomotor activity is in the range of the upper 60s to mid-80s
Indicate whether the statement is true or false
Which of the following results in muscle relaxation?
a. addition of magnesium to muscle cells. b. AChE activity. c. return of calcium to lateral sacs. d. sliding together of thick and thin filaments. e. two of these answers.
Which of the following is a thin layer of smooth muscle just beneath the skin of the scrotum?
A. Tunica vaginalis B. Dartos muscle C. Inguinal muscle D. Raphe E. Cremaster
Essential amino acids are so physiologically important that the body can synthesize them by modifying other (nonessential) amino acids.
Answer the following statement true (T) or false (F)