The right atrium receives blood from
A. the lungs and the heart.
B. the heart.
C. the body and the heart.
D. the lungs and the body.
C
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Intracellular fluids have high concentrations of
A. sodium and phosphate ions. B. potassium and phosphate ions. C. sodium and chloride ions. D. chloride and potassium ions.
The reason it is more appropriate to call an erythrocyte a "formed element" rather than a "cell" is that erythrocytes
A. are actually dead. B. lack a nucleus and organelles. C. have lots of inclusion molecules. D. are not red. E. can form a rouleau when moving through a capillary.
Which muscle is used for normal breathing and which additional muscles are used when performing strenuous exercise?
What will be an ideal response?
The conscious awareness of a sensation is called
A) reception. B) perception. C) proprioception. D) adaptation. E) desensitization.