Anatomy 9b Muscle Contractions

Front

What is released from the sarcoplasmic reticulum?

Back

Calcium

Front

Ca2+ released by sarcoplasmic reticulum will bind to which protein?

Back

Troponin

Front

What is the gap between the motor neuron and the muscle fiber at the neuromuscular junction called?

Back

Synaptic cleft

Front

What is the role of mitochondria in muscle contraction?

Back

Production of ATP

Front

What type of filament is actin?

Back

Thin filament

Front

What is the function of troponin in muscle contraction?

Back

Troponin binds to calcium ions, causing a conformational change that allows muscle contraction to occur.

Front

What is the role of myosin in muscle contraction?

Back

Myosin interacts with actin to produce muscle contraction through the sliding filament theory.

Front

What is the sliding filament theory?

Back

The sliding filament theory explains how muscles contract by the sliding of actin and myosin filaments over each other.

Front

What is the function of ATP in muscle contraction?

Back

ATP provides the energy required for muscle contraction and relaxation.

Front

What is the sarcolemma?

Back

The sarcolemma is the cell membrane of a muscle fiber.