09 REVIEW: Muscular System

Using Figure 9.1, match the following description with the correct label from the diagram: Connective tissue sheath surrounding individual muscle fibers.

• A

• B

• C

• D

Using Figure 9.1, match the following description with the correct label from the diagram: Bundle of muscle cells surrounded by a perimysium.

• A

• B

• D

• E

Connective tissue covering the exterior of a muscle organ.

• A

• B

• C

• D

Connective tissue surrounding muscle fiber bundles.

• A

• B

• D

• E

Individual muscle fiber.

• A

• B

• C

• E

Depend on oxygen delivery and aerobic mechanisms.

• Fast (oxidative), fatigue-resistant fibers

• Fast (glycolytic), fatigable fibers

• Slow (oxidative), fatigue-resistant fibers

Have very fast-acting myosin ATPases and depend upon aerobic metabolism during contraction.

• Fast (oxidative), fatigue-resistant fibers

• Fast (glycolytic), fatigable fibers

• Slow (oxidative), fatigue-resistant fibers

Abundant in muscles used to maintain posture.

• Fast (oxidative), fatigue-resistant fibers

• Fast (glycolytic), fatigable fibers

• Slow (oxidative), fatigue-resistant fibers

A relatively high percentage are found in successful marathon runners.

• Endurance

• Fast-twitch muscle fibers

• Slow-twitch muscle fibers

• High lung capacity

When muscle tension develops but the load is not moved, this is known as:

• Isometric contraction

• Isotonic contraction

• Concentric contraction

• Eccentric contraction