The Dicrotic Notch Recorded in the Aorta Immediately Follows What

question 54

Multiple Choice

The dicrotic notch recorded in the aorta immediately follows what mechanical event of the cardiac cycle?

• A) Closure of the aortic valve
• B) Closure of the atrioventricular valves
• C) Isovolume contraction
• D) Opening of the aortic valve

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Definitions:

Sympathetic Nervous System

Part of the autonomic nervous system that activates the body's fight-or-flight response during stressful situations.

Peripheral Nervous System

Part of the nervous system outside the brain and spinal cord, responsible for connecting the CNS to limbs and organs.

Autonomic Nervous System

The part of the nervous system that controls involuntary bodily functions, including heart rate, digestion, and respiratory rate.

Parasympathetic Nervous System

Part of the autonomic nervous system that conserves energy by slowing the heart rate, increasing intestinal and gland activity, and relaxing sphincter muscles in the gastrointestinal tract.