Muscular System SI Test

Connective tissue that surrounds an individual muscle cell

• endomysium

• tendon

• myosin

• actin

Attaches a muscle to a bone

• endomysium

• tendon

• actin

• action potential

the thick protein myofilaments in a myofibril are

• tendon

• myosin

• actin

• action potential

The thin protein myofilaments in a myofibril are

• myosin

• actin

• fascicle

• sarcomere

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

• action potential

• fascicle

• sarcomere

• calcium ions

A bundle of muscle fivers is a

• actin

• fascicle

• sarcomere

• calcium ions

The contractile unit of the muscle is the

• action potential

• fascicle

• sarcomere

• calcium ions

Property of muscles that enable them to receive and respond to a stimulus

• calcium ions

• sarcomere

• irritability

• isotonic

Calcium is stored in the

• irritability

• sarcoplasmic reticulum

• acetylcholine

• fascicle

Type of muscle contraction that causes movement

• irritability

• acetylcholine

• isotonic

• motor unit