Muscle Structure & Function

Front

What is required for aerobic metabolism to occur?

Back

Oxygen

Front

Which of the following occurs first in muscle contraction?

Back

Calcium Ion Enters the Pre-synaptic Terminal

Front

Letter D represents which structure?

Back

Perimysium

Front

What structure does letter D represent?

Back

A band

Front

What is the function of epimysium?

Back

The function of epimysium is to provide support and protection to the muscle fibers.

Front

What is the basic unit of muscle contraction?

Back

Sarcomere

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions bind to troponin, causing a conformational change that allows myosin to bind to actin.

Front

What is the difference between slow-twitch and fast-twitch muscle fibers?

Back

Slow-twitch fibers are more endurance-oriented and use aerobic metabolism, while fast-twitch fibers are geared for quick, powerful bursts of activity.

Front

What is the function of the endomysium?

Back

The endomysium surrounds individual muscle fibers and provides support and insulation.

Front

What is the role of acetylcholine in muscle contraction?

Back

Acetylcholine is a neurotransmitter that transmits the signal from a nerve to a muscle, initiating contraction.