Which of the Following Is a Function of the Substantia

question 114

Multiple Choice

Which of the following is a function of the substantia nigra?

• A) It integrates information from the cerebrum and cerebellum and issues involuntary motor commands concerned with the maintenance of muscle tone and limb position.
• B) It integrates visual information with other sensory input.
• C) It regulates the motor output of the basal nuclei.
• D) It initiates reflex responses to auditory stimuli.
• E) It functions in the automatic processing of incoming sensations and outgoing motor commands.

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Definitions:

Excitation-Contraction Coupling

The physiological process of converting an electrical stimulus to a mechanical response, essential for muscle contraction.

Action Potential

A rapid and temporary electrical charge that travels along the membrane of a neuron, initiating the transmission of a nerve impulse.

Sarcolemma

The thin, plasmalemma (plasma membrane) surrounding a muscle fiber, crucial for transmitting signals and coordinating contractions.

Lactate

A compound produced during anaerobic metabolism that can be used as a fuel by the heart and other muscles.