Using the Normal Values for DO₂ and VO₂ for a Healthy

question 24

Multiple Choice

Using the normal values for DO₂ and VO₂ for a healthy adult, how long would it take to deplete the oxygen stores in the body if an adult experienced a complete respiratory arrest?

• A) about 10 minutes
• B) about 2 minutes
• C) about 8 minutes
• D) about 4 minutes

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Definitions:

Refractory Periods

Refractory periods are times following an action potential during which a neuron is less responsive to stimuli, ensuring the unidirectional flow of the signal.

Synaptic Knob

The end part of an axon that makes a synaptic contact with another neuron, responsible for the release of neurotransmitters.

Decremental

Describes a process or signal that decreases in size, amplitude, or magnitude over time.

Potassium And Sodium Ion Channels

Protein channels located in cell membranes that allow potassium and sodium ions to move across, vital for processes such as nerve impulse transmission.