Which of the Following Is a Normal Partial Pressure of Oxygen

question 14

Multiple Choice

Which of the following is a normal partial pressure of oxygen value at sea level?

• A) 60 mm Hg
• B) 75 mm Hg
• C) 90 mm Hg
• D) 105 mm Hg

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Definitions:

Graded Potentials

Changes in membrane potential that vary in size and do not follow the all-or-none principle, important in the initiation of action potentials.

Sodium-Potassium Pump

A vital cell membrane protein that exchanges sodium for potassium across the plasma membrane, critical for cellular functions.

Divergence

The functional arrangement of neurons in which a neuron sends signals to two or more postsynaptic neurons. Compare with convergence.

Nitric Oxide

A gas that functions as a signaling molecule in the body, playing roles in the immune system, neurological system, and regulation of blood vessels.