Muscular System

Which of the following is the only type of muscle tissue which is under voluntary control?

• Skeletal muscle

• Static muscle

• Cardiac muscle

• Smooth muscle

What is the chief function of T tubules?

• 1. They allow electrical impulses to travel deep into the cell.

• 1. They store the calcium ions necessary for muscle contraction.

• 1. They contain myofilaments necessary for muscle contraction.

• 1. They store glycogen and oxygen.

In order for muscle contraction to occur, the muscle fiber requires calcium, as well as this substance which provides the cell with energy:

• ATP

• Epinephrine

• Bicarbonate

• Lipase

Tags

NGSS.HS-LS1-7

Most muscles remain continually in a state of:

• Twitch

• Incomplete Tetanus

• Complete Tetanus

• Treppe

The phenomenon in which each successive twitch contracts more forcefully than the previous one is known as:

• Threshold

• Incomplete tetatus

• Complete tetanus

• Treppe

Bundles of muscle fibers within a skeletal muscle are known as:

• Fasicles

• Motor Units

• Sarcomeres

• Sarcolemmas

When the muscle fiber receives a stimulus that is at or above the threshold, it responds with a single, brief contraction called a:

• Treppe

• Twitch

• Tremble

• Trope

These muscles are the main muscle in a group which is responsible for triggering a specific type of movement:

• Agonist

• Synergist

• Antagonist

• Prime Mover

Within a group, the muscle that opposed the action of the prime mover is known as the:

• Synergist

• Antagonist

• Flexor

• Abductor

The end of the muscle that attaches to the more movable bone is known as the:

• Origin

• Insertion

• Belly

• Tendon