While considered an organ of the gastrointestinal system, the ________ is not part of the gastrointestinal tract.
A. small intestine
B. pharynx
C. liver
D. esophagus
Answer: C
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Amino acids contain a central carbon atom adjacent to a(n) ________ group and a(n) ________ group.
A) carboxyl; phosphate B) nitrogenous; carboxyl C) nitrogenous; amino D) amino; carboxyl E) amino; phosphate
The most common extracellular ion is ________.
Fill in the blank(s) with the appropriate word(s).
Vasoconstriction of the blood vessels to the skin
a. is coordinated by the sympathetic nervous system. b. lowers heat exchange with the environment. c. occurs when core body temperature is elevated. d. both (a) and (b) above e. all of these answers.
The ________ association area is responsible for perceiving and attending to stimuli, and the ________ association area is responsible for identifying them.
A. temporal; parietal B. occipital; frontal C. parietal; temporal D. temporal; occipital E. frontal; occipital