When are the three primary germ layers established during pregnancy?
a) First week of development
b) Second week of development
c) Third week of development
d) Fourth week of development
e) Second month of development
c
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The muscle that serves as the "prime mover" during a movement is called the
a) antagonist. b) agonist. c) synergist. d) asynergist. e) fixator.
What is edema?
A) Accumulation of interstitial fluid in any tissue B) Accumulation of interstitial fluid in the blood C) Overactivity of the lymphatic system D) A condition of the lungs
In response to circulatory shock,
A. atrial natriuretic factor is released. B. the renin-angiotensin mechanism is activated. C. the body decreases ADH secretion. D. the baroreceptors and chemoreceptors are inactivated. E. the vasomotor center is inhibited.
Which type of chemical bond holds water molecules together by forming a bridge between the negative oxygen atom of one water molecule and the positive hydrogen atoms of another water molecule?
a. isotopic b. hydrogen c. ionic d. covalent