After Cutting Each of the Individual Tracts That Enter the Medulla

question 136

Multiple Choice

After cutting each of the individual tracts that enter the medulla and spinal cord, depriving the brain of almost all sensory input, an animal:

• A) continues to have periods of wakefulness and sleep.
• B) stops sleeping.
• C) goes into a coma.
• D) enters a prolonged state of sleep.

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Definitions:

Myocardium

The middle and thickest layer of the heart. It is made primarily of cardiac muscle.

Ventricular Contractions

The rhythmic tightening and pumping action of the heart's ventricles, essential for circulating blood throughout the body.

Stereotactic Radiosurgery

A non-surgical radiation therapy used to treat abnormalities and small tumors in the brain with highly focused radiation beams.

Cancer

A broad group of diseases characterized by the uncontrolled growth and spread of abnormal cells.