A Key Influence of the Location of the Atrioventricular Node

question 33

Multiple Choice

A key influence of the location of the atrioventricular node on the heartbeat is to

• A)speed up the conduction of the electrical impulse to contract as it passes from the atria to the ventricles.
• B)slow down the conduction of the electrical impulse to contract as it passes from the atria to the ventricles.
• C)act as a barrier that prevents the conduction of the electrical impulse to contract as it passes from the atria to the ventricles.
• D)not alter the speed at which the electrical impulse to contract passes from the atria to the ventricles.
• E)block backflow of blood from the aorta into the right ventriclE.

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Definitions:

Scrotum

The pouch of skin that contains and protects the testicles, as well as regulates their temperature.

Penis

The male external genitalia that serves as both the organ of sexual intercourse and the passageway for urine to leave the body.

Testis

The male reproductive gland that produces sperm and testosterone, located in the scrotum.

Ductus Deferens

A tube that carries sperm from the testes to the urethra in male mammals.