An Imaginary Line Connecting the Highest Point on Each Iliac

question 38

Multiple Choice

An imaginary line connecting the highest point on each iliac crest would cross the _____ vertebra.

• A) first sacral
• B) fourth lumbar
• C) seventh cervical
• D) twelfth thoracic

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Definitions:

Voluntary Muscles

Muscles that are under conscious control, used in actions such as speaking, walking, and grabbing objects.

SCN

Stands for the Suprachiasmatic Nucleus, a small region in the brain that regulates the circadian rhythms, including sleep-wake cycles.

Pineal Gland

A small endocrine gland in the vertebrate brain that produces the hormone melatonin, involved in regulating sleep patterns.

Melatonin

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