Given the Following Components of the Cardiac Conduction Cycle, Which

question 76

Short Answer

Given the following components of the cardiac conduction cycle, which one of the following best describes the movement of the stimulus that causes a heart contraction? A. atrioventricular bundle
B) sinoatrial node
C) atria
D) atrioventricular node
E) Purkinje fibers
F) ventricles

A) B, C, D, A, E, F
B) B, D, A, C, E, F
C) D, A, E, F, B, C
D) A, D, E, B, C, F
E) B, C, D, F, A, E

• A) B, C, D, A, E, F
• B) B, D, A, C, E, F
• C) D, A, E, F, B, C
• D) A, D, E, B, C, F
• E) B, C, D, F, A, E

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Definitions:

Myelin Sheath

The fatty layer enveloping axons of some neurons that increases the speed at which impulses propagate along the myelinated fiber.

Neural Messages

Information transmitted through neurons via electrical and chemical signals, facilitating communication throughout the nervous system.

Neurons

Specialized cells in the nervous system that convey information to other neurons, muscles, or glands.

Acetylcholine

A neurotransmitter involved in many functions including muscle movement, heart rate, memory, and learning, playing a key role in the brain and body's nervous systems.