Samuels BIO Muscular System I

Match it! Select the correct answer from the pull down...Good luck!

Nerve cells that trigger muscle contractions are called ______.

This principle states that muscle fibers either contract or not at all, muscle cells do not partially contract.

Which type of muscle is involved in moving the skeleton?

Which type of fiber contains few mitochondria and myoglobin but fatigue easily?

Muscle that break down undergo ______.

Which type of muscle consists of short, wide cells and are specialized for slow, prolonged contractions?

Muscle that enlarge undergo ______.

Repeating protein fibers that make up myofibrils in muscles are called ______.