The Part of the Heart Muscle That Usually Depolarizes First

question 89

Short Answer

The part of the heart muscle that usually depolarizes first in a heartbeat is the ____________________.

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Definitions:

Reticular Formation

A network of nerve pathways in the brainstem involved in consciousness, the sleep-wake cycle, and filtering sensory information before it reaches higher brain centers.

Hippocampus

A critical region of the brain involved in the formation of new memories and is associated with learning and emotions.

Cerebellum

Part of the brain that plays an important role in motor control, balance, and coordination.

Behavioral Genetics

The study of genetic and environmental influences on behaviors.