When Venous Pressure Is Too Low, ________ Stimulate Smooth Muscles

question 22

Multiple Choice

When venous pressure is too low, ________ stimulate smooth muscles in the walls of veins to contract.

• A)parasympathetic reflexes
• B)sympathetic reflexes
• C)somatic reflexes
• D)carbon dioxide levels

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Definitions:

ECG

Electrocardiogram, a diagnostic tool that records the electrical activity of the heart, used to detect heart conditions by measuring the timing and duration of each electric phase in the heartbeat.

QRS Complex

A series of deflections in an electrocardiogram (ECG) representing ventricular depolarization before the main pumping action of the heart.

Atrial Repolarization

The process where atrial muscle cells return to their resting state during the cardiac cycle.

Cardiac Cycle

Refers to the complete heart beat from its generation to the beginning of the next beat, encompassing the contraction and relaxation phases of the heart.