Increases and decreases of the heart rate result from changes in the activity of the ________.
A) medulla oblongata
B) thalamus
C) pituitary
D) cerebellum

Question

Quizplus · Accepted Answer

The medulla oblongata is a part of the brainstem that plays a critical role in regulating the heart rate. It contains a cluster of neurons called the cardiac center, which receives signals from receptors in the body and sends out signals via the autonomic nervous system to the heart to speed up or slow down its beating. The thalamus, pituitary, and cerebellum do not have direct control over the heart rate.

Increases and Decreases of the Heart Rate Result from Changes