In Descartes's Theory of the Reflex Mechanism,stimuli Are Transmitted to the Brain

question 4

Multiple Choice

In Descartes's theory of the reflex mechanism,stimuli are transmitted to the brain by means of __________,and responses are initiated by __________.

• A) columns of "light" particles; the dispersion of heat to the proper muscle
• B) hydraulic pressure in a sensory nerve; hydraulic pressure in a motor nerve
• C) tugs and pulls on filaments through nerves; the flow of animal spirits through the nerves and into the muscles
• D) hydraulic pressure in the fluid within the nerve; tugs on the filaments within the nerves, connected to the muscles

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Definitions:

Platysma

A muscle in the neck region that plays a role in facial expression, such as lowering the lower jaw and lip.

Mandible

The lower jawbone in humans and some animals, which holds the lower teeth in place and plays a key role in biting and chewing.

Levator Anguli Oris

A facial muscle that elevates the angle of the mouth, contributing to expressions such as smiling.

Normal Populations

Populations in which the distribution of data points follows a normal (bell-shaped) distribution curve.