The Middle Third of the Descending Duodenum Is Crossed Anteriorly

question 3

Multiple Choice

The middle third of the descending duodenum is crossed anteriorly by the _____ portion of the colon.

• A) ascending
• B) descending
• C) transverse
• D) sigmoid

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Definitions:

Circadian Rhythm

The natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.

Biological Clock

An internal mechanism that regulates physiological and behavioral functions on a cyclical basis, such as sleep and wakefulness.

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness cycles.

Adrenalin

Also known as epinephrine, a hormone and medication which increases heart rate, muscle strength, blood pressure, and sugar metabolism, often in response to stress.