The Structure That Serves as Our Biological Clock Is

question 11

Multiple Choice

The structure that serves as our biological clock is:

• A)the heart with its pace-maker cells.
• B)the pituitary gland.
• C)the pineal gland.
• D)the suprachiasmatic nucleus in the hypothalamus.

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Definitions:

Hypoventilation

A state of insufficient ventilation leading to an increase in blood carbon dioxide levels, which can disrupt the body's acid-base balance.

Rebreathing

Rebreathing is the process of inhaling the air that has been exhaled, which can lead to an increase in carbon dioxide and a decrease in oxygen levels in the body.

Bicarbonate Ions

Chemical ions (HCO3-) that act as a major component of the blood's buffering system, helping to maintain the body's pH balance.

Carbonic Acid

A weak acid formed when carbon dioxide dissolves in water, playing a vital role in regulating pH in the blood.