Which Structure Is Labeled B

question 45

Multiple Choice

Which structure is labeled B?

• A) Fascicle
• B) Muscle fiber
• C) Myofilament
• D) Myofibril

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Definitions:

Hypothalamus

A region of the brain that controls an enormous number of bodily functions, including temperature regulation, thirst, hunger, sleep, and emotional activity.

Subcortical Structure

Regions of the brain located below the cerebral cortex, involved in functions such as movement control, emotional processing, and memory.

Substantia Nigra

A region of the brain that plays an important role in movement, and whose degeneration is a hallmark of Parkinson's disease.

Voluntary Motor Activity

Movement generated intentionally by an individual, typically involving the skeletal muscle system.