Increases and Decreases of the Heart Rate Result from Changes

Question

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

Accepted Answer

The medulla oblongata is a part of the brainstem that controls autonomic functions such as breathing, blood pressure, and heart rate. It contains cardiovascular control centers that monitor blood pressure and adjust heart rate accordingly. Therefore, increases and decreases in heart rate are a result of changes in the activity of the medulla oblongata, making option B the best choice.