Which of the Following Statements Concerning the Dorsal and Ventral

question 79

Multiple Choice

Which of the following statements concerning the dorsal and ventral respiratory groups is false?

• A) They are located in the reticular activating system.
• B) There is cross communication between these two groups.
• C) These groups establish the basic rate and depth of breathing.
• D) These groups increase the number of action potentials to the respiratory muscles during inspiration.
• E) Two dorsal and two ventral respiratory groups make up the medullary respiratory center.

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Definitions:

Neurotransmitters

Chemical substances produced by neurons that transmit signals across a chemical synapse from one neuron to another target neuron, muscle cell, or gland cell.

Presynaptic Facilitation

An increase in the neurotransmitter release from a presynaptic neuron, enhancing the response of the postsynaptic neuron.

Myelinated Fiber

A nerve fiber with a myelin sheath, which increases the speed at which electrical impulses propagate along the nerve fiber.

Initial Segment

The first portion of a nerve cell axon nearest to the cell body, critical for the initiation of neural signals.