What is indicated by a heart murmur detected between the first and second heart sounds?
A. insufficiency of a semilunar valve or stenosis of an AV valve
B. insufficiency of an AV valve or stenosis of a semilunar valve
C. heart failure
D. AV nodal conduction block
E. a myocardial infarction
B
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Disease-producing microorganisms that invade the body are known as ________
A) Pathogenic B) Aerobic C) Cytophrenic D) Neogenic
A solution containing 300 mOsm/L will always gain water from a solution containing only 250 mOsm/L
Indicate whether the statement is true or false
What makes lymphatic vessels similar to the venous circuit of the cardiovascular system?
A) Both vessels operate under high pressure. B) Both vessels have valves. C) Both vessels feed into capillary beds. D) Both vessels have a thick tunica media.
Which trait is unique to arteries?
A) They have three tunics. B) They contain valves to prevent backflow. C) They transport blood away from the heart. D) They have a thinner tunica media.