The right atrium receives blood directly from
A) the pulmonary veins.
B) the superior vena cava, inferior vena cava, and coronary sinus.
C) the superior vena cava, inferior vena cava, and pulmonary veins.
D) the superior vena cava and inferior vena cava only.
B
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Which of the choices below is NOT a mechanism of heat transfer used by the body?
A) shivering B) evaporation C) conduction/convection D) radiation
What would happen if there were no AChE in the synaptic cleft?
A) The motor end plate could not be stimulated and no muscle contraction could occur. B) The motor end plate could not be stimulated and continuous muscle contraction would occur. C) The motor end plate would be continuously stimulated and no muscle contraction could occur. D) The motor end plate would be continuously stimulated and continuous muscle contraction would occur. E) The motor end plate would be unaffected because epinephrine not ACh stimulates the contraction of skeletal muscles.
The study of Physiology deals with ________
A) Disease B) Functions C) Genetics D) Structures
In a muscle twitch, which of the following represents the time between application of a stimulus and the beginning of contraction?
A) treppe B) tetany C) lag or latent phase D) relaxation phase