Muscular Quiz 2

The connective tissue that surrounds each muscle cell

• cardiac

• contractility

• endomysium

• calcium ions

The band of connective tissue that extends from a muscle to attach a bone

• smooth muscle

• synaptic cleft

• sarcoplasmic reticulum

• tendon

The thin protein filament in a myofibril

• acetylcholine

• actin

• action potential

• ATP

The thick protein filament in a myofibril

• irritability

• motor unit

• myosin

• sarcolemma

A motor neuron and the muscle fibers it stimulates

• irritability

• motor unit

• calcium ions

• fascicle

Storage area for calcium ions

• sarcolemma

• sarcomere

• sarcoplasmic reticulum

• synaptic cleft

The enzyme that breaks down acetylcholine

• acetylcholine

• actin

• acetylcholinesterase

• ATP

The type of muscle that is attached to bone

• cardiac

• skeletal

• smooth

• tendon

The space between motor neurons and muscle fibers

• sarcomere

• sarcolemma

• sarcoplasmic reticulum

• synaptic cleft

The electrical current generated by the change in charge across the muscle cell membrane

• acetylcholine

• actin

• action potential

• ATP