Skeletal muscle tissue

The binding of __ to the receptor on an ion channel causes the channel to open, allowing an influx of___ ions into the muscle fiber

Acetylcholine, sodium

Which best describes the structural components of skeletal muscle, from largest to smallest

Fascicle, fiber, myofibril, thick and thin filaments

The place where an impulse transmitted from the motor neuron to skeletal muscle, is called the

Neuromuscular junction

The neurotransmitter released by motor neurons that stimulates skeletal muscle is called

acetylcholine

Sacromeres contain

actin and myosin

The proteins within a muscle cell are organized into large cells called

myofibrils

Which step of muscle contraction is called the power stroke

myosin heads move the actin filaments inward, shortening the sarcomere

Which of the following occurs when the myosin heads bind to actin

the cross bridges are established

All of the following are characteristics of skeletal muscles, except

they are under involuntary control