A structure composed of two or more tissues is a/an ________.
Fill in the blank(s) with the appropriate word(s).
organ
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The spleen is a lymph organ that filters blood and also acts as a reservoir for ________
A) Blood B) Fat C) Water D) Interstitial fluid
Your examination of a male patient reveals a tender subareolar mass in his breast. Which of the following conditions is most likely based on this finding?
A) gynecomastia B) Klinefelter's syndrome C) cancer D) shingles E) fibrous atrophy of his pectoralis major
Binding of acetylcholine with its receptor on muscle cells causes
A) opening of a ligand-gated sodium channel. B) a gap in the cell membrane for calcium diffusion. C) vesicular release of sodium ions. D) opening of a voltage-gated calcium channel.
Amphetamines produce a state of increased alertness and wakefulness by increasing the release and blocking the reuptake of what neurotransmitter?
A) acetylcholine B) glycine C) norepinephrine D) serotonin