Negative feedback loops are ________
A) self-amplifying cycles
B) not homeostatic mechanisms
C) associated with "vicious circles"
D) homeostatic mechanisms
E) usually harmful
D
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The adrenal medulla develops from which of the following germ layers during embryonic development?
a) Mesoderm b) Endoderm c) Ectoderm d) A combination of two of the layers e) None of the answer selections are correct
Which of the following is NOT a type of hormone interaction?
A) feedback B) permissiveness C) antagonism D) synergism
___________________ drugs are not used in medical facilities due to high addictive potential
Fill in the blank(s) with correct word
During an isotonic contraction,
a. sarcomeres do not shorten in the muscle b. movement does not occur inside the muscle c. the muscle does not change length d. the muscle's tension does not overcome a load e. the muscle's tension remains constant