What Synchronizes the Human Internal "Pacemaker" with the 24-Hour Day/night

question 43

Multiple Choice

What synchronizes the human internal "pacemaker" with the 24-hour day/night cycle?

• A)the rods and cones of the eye.
• B)exposure to sunlight.
• C)the consumption of food.
• D)the changes in temperature that are associated with night and day.

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Definitions:

Intense Fear

A strong, uncontrollable, and often irrational reaction to a specific object, situation, or event, leading to avoidance or distress.

Palpitations

The feeling of having a rapid, fluttering, or pounding heartbeat.

Sweating

A physiological process of secreting fluid from sweat glands of the skin, often induced by heat or stress as part of the body's cooling mechanism.

Physical Symptoms

Observable or felt changes in the body that often indicate disease, discomfort, or the effects of stress.