Figure 7-1 Structural Components of a Skeletal Muscle Fiber

question 80

Multiple Choice

Figure 7-1 Structural Components of a Skeletal Muscle Fiber
Use Figure 7-1 to identify the labeled part.
-Label A is pointing to

• A) myofibrils.
• B) Z lines.
• C) sarcoplasmic reticulum.
• D) T tubules.
• E) myofilaments.

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Definitions:

Peripheral Nervous System

The part of the nervous system outside the brain and spinal cord, responsible for connecting the central nervous system to limbs and organs.

Somatic Nervous System

Part of the peripheral nervous system that is responsible for carrying sensory and motor information to and from the central nervous system.

Movement

The act or process of moving; a change of place or position, often referring to physical activity or migration.

Spinal Cord

The spinal cord is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.