At Which Point in the Respiratory Cycle Is Thoracic Volume

question 4

Multiple Choice

At which point in the respiratory cycle is thoracic volume the smallest?

• A)At end inhalation
• B)With contraction of the diaphragm
• C)With contraction of the external intercostals
• D)At end of exhalation

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Definitions:

Motor Neuron

A type of neuron that sends impulses from the central nervous system to a muscle or gland, prompting action.

Dendrite

The branched projections of a neuron that receive electrochemical stimulation from other neural cells.

Axon

A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.

Myelin Sheath

A protective coating around nerve fibers in the central and peripheral nervous systems, facilitating electrical impulses' transmission.