Tachycardia is a term that refers to
A) Lower than normal heart rate.
B) Abnormal rhythm.
C) Uncoordinated contraction of the heart.
D) Higher than normal heart rate.
Answer: D
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Mean arterial pressure is the main driving force for propelling blood to the __________
Fill in the blank(s) with correct word
Cyclin, a protein that becomes more abundant as the cell cycle proceeds,
A) delays cytokinesis. B) activates repressor genes. C) triggers DNA replication. D) damages telomeres. E) takes part in triggering mitosis.
Select the correct statement about cardiac output.
A) A slow heart rate increases end diastolic volume, stroke volume, and force of contraction. B) Decreased venous return will result in increased end diastolic volume. C) If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased. D) Stroke volume increases if end diastolic volume decreases.
The process of emission is under the control of
A) the parasympathetic nervous system. B) the sympathetic nervous system. C) both the parasympathetic and sympathetic nervous systems. D) the central nervous system. E) the central and parasympathetic nervous systems.