Infants Begin to Babble at About 2 Months of Age

question 28

True/False

Infants begin to babble at about 2 months of age.

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Definitions:

Plethysmogram

A graph or recording that measures changes in volume within an organ or whole body (often the blood volume changes in the limbs).

Pressure Wave

A type of wave mechanism that occurs when a fluid or gas changes velocity, often seen in the circulatory system as a pulse.

Blood Volume

The total amount of blood circulating within an individual's vascular system.

Ventricular Systole

The phase of the heartbeat when the ventricles contract, pumping blood out of the heart and into the arteries.