Muscular System Review

Front

What is the power stroke in muscle contraction?

Back

The power stroke is the action when myosin heads make a cross bridge and bend, pulling the actin myofilament toward the center of the sarcomere.

Front

What role does ATP play in muscle contraction?

Back

ATP prepares a myosin head for its power stroke, allowing muscle contraction to occur.

Front

What is actin in the context of muscle contraction?

Back

Actin is a myofilament that is essential to muscle contraction.

Front

What attaches muscle to bone?

Back

Tendons attach muscle to bone.

Front

What does elasticity mean in muscle physiology?

Back

Elasticity is the ability of a muscle to recoil or bounce back to its original shape.

Front

What is the function of tendons?

Back

Tendons connect muscles to bones, facilitating movement.

Front

Define extensibility in muscle tissue.

Back

Extensibility is the ability of muscle tissue to be stretched without being damaged.

Front

What is contractility in muscles?

Back

Contractility is the ability of muscle fibers to shorten and generate force.

Front

What is excitability in muscle tissue?

Back

Excitability is the ability of muscle cells to respond to stimuli, such as nerve impulses.

Front

What is the neuromuscular junction?

Back

The neuromuscular junction is the synapse or connection point between a motor neuron and a muscle fiber.