Which Brain Nucleus Is the Body's "Biological Clock

question 96

Multiple Choice

Which brain nucleus is the body's "biological clock"?

• A) lentiform nucleus
• B) dorsomedial nucleus
• C) subthalamic nucleus
• D) suprachiasmatic nucleus

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Definitions:

Spiracle

An external respiratory opening found in some animals, including insects and some amphibians, used for breathing.

Partial Pressure

The pressure exerted by a single component of a mixture of gases, proportionate to its percentage in the mixture.

Pulmonary Capillaries

Tiny blood vessels in the lungs where gas exchange between the air and blood occurs.

Vocal Cords

Bands of muscle tissue located in the larynx, which vibrate to produce sound when air is expelled from the lungs, aiding in speech and vocalization.