What region of the cardiovascular system contains valves?
A) heart only
B) metarterioles only
C) veins only
D) both the heart and veins
E) the heart, metarterioles, and veins
Answer: D) both the heart and veins
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An example of an inhibitory neurotransmitter is
A) acetylcholine. B) epinephrine. C) dopamine. D) GABA. E) insulin.
How are the feeding habits of lampreys best described?
a. suspension feeding b. predatory c. parasitic d. scavenging e. passive
A(n) __________ property is a characteristic of a
system that does not appear in any of its component parts. a. efferent b. emergent c. elective d. energetic e. living
The prevalence of a disease can be calculated as the (total number of cases in population) divided by the (total number of people in population) time (____)
Fill in the blank(s) with the appropriate word(s).