Descending Instructions Along the ________ Tracts of the Spinal Cord

question 10

Multiple Choice

Descending instructions along the ________ tracts of the spinal cord adjust peripheral muscle tone to complement the reflexive movements of the head or neck.

• A) tectospinal
• B) corticospinal
• C) vestibulospinal
• D) rubrospinal
• E) corticobulbar

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Definitions:

Spinous Process

A bony projection off the posterior (back) part of each vertebra, serving as a point for muscle and ligament attachment.

Costal Facet

A small, flat surface on a vertebra that articulates with the rib, contributing to the thoracic cage's stability.

Lamina

A thin layer, plate, or scale of organic material, such as the lamina of a vertebrate's bone or the lamina propria in mucous membranes.

Xiphoid Process

A small cartilaginous extension of the lower part of the sternum which is usually ossified in the adult human.