Skeletal Muscle Function and Structure

Front

What is the zigzag portion called that forms the boundary ends of each sarcomere?

Back

Z disc or Z lines

Front

This part is responsible for skeletal muscle contraction.

Back

Sarcomere

Front

What does 'Endo' mean?

Back

Within

Front

What are the functions of skeletal muscles?

Back

Posture Support, Protects Organs, Produces Heat, All of the above

Front

What is the basic unit of muscle contraction?

Back

Sarcomere

Front

What protein filaments are involved in muscle contraction?

Back

Actin and Myosin

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 function of the sarcoplasmic reticulum in muscle cells?

Back

It stores and releases calcium ions during muscle contraction.

Front

What is the term for the muscle's ability to respond to stimuli?

Back

Excitability

Front

What is the term for the muscle's ability to shorten and generate force?

Back

Contractility