Muscular System

Front

What is the length between Z-lines of an actin molecule called?

Back

sarcomere

Front

What is the connective tissue that surrounds the entire muscle called?

Back

epimysium

Front

What is the first step to a muscle contraction?

Back

The nerve impulse is sent to a motor neuron.

Front

What is another name for a muscle cell?

Back

muscle fiber

Front

What is a cross bridge?

Back

The connection between actin and myosin proteins.

Front

What is the role of acetylcholine in muscle contraction?

Back

It passes into the synaptic cleft to initiate muscle contraction.

Front

What is the function of T Tubules in muscle cells?

Back

They conduct the muscle impulse deep into the muscle fiber.

Front

What is the role of calcium ions in muscle contraction?

Back

They diffuse into the sarcoplasm to trigger contraction.

Front

What is the connective tissue that surrounds individual muscle fibers called?

Back

endomysium

Front

What is the connective tissue that surrounds bundles of muscle fibers called?

Back

perimysium