Muscle Contraction Steps

Front

What is the role of Ribosomes and Golgi Apparatus in muscle cells?

Back

They are responsible for the synthesis of myofibril proteins.

Front

What is the primary function of mitochondria in muscle contraction?

Back

The production of ATP (adenosine triphosphate).

Front

What happens to the H Zone during full muscle contraction?

Back

The H Zone disappears.

Front

Which ion is NOT critical to muscle contraction?

Back

Phosphorus Ion.

Front

Which two ions are pumped in/out of the sarcolemma during muscle contraction?

Back

Sodium and Potassium.

Front

Define muscle contraction.

Back

The process where muscle fibers shorten and generate force.

Front

What is the role of Calcium ions in muscle contraction?

Back

Calcium ions bind to troponin, allowing myosin to interact with actin.

Front

What is the function of the sarcolemma?

Back

It is the cell membrane of a muscle cell that helps in the conduction of electrical impulses.

Front

Explain the sliding filament theory.

Back

It describes how muscle fibers contract by the sliding of actin and myosin filaments over each other.

Front

What is ATP and why is it important in muscle contraction?

Back

ATP (adenosine triphosphate) provides the energy required for muscle contraction.