Chapter 6 The Muscular System

What are the 3 types of muscle?

All muscles have 4 traits in common. What are they?

Most muscles work in pairs or groups. Most muscles are arranged in ___________ pairs.

Each end of the muscle is attached to a bone by a ______ (a band of connective tissue).

A muscle is often attached to two bones on opposite sides of a __________.

Excessive stress on a tendon can cause it to become inflamed, a condition known as _________.

Skeletal muscles is also called _______ (striped) muscle, because under a microscope, the muscle cells are seen to have pronounced bands that look like stripes.

A skeletal muscle is surrounded by a dense connective tissue called the ___________.

Threadlike structures called _________ extend the length of the muscle fiber and dominate its interior.

Muscles that contract at the same time to cause a certain movement are called __________ pairs.

The part of the myofibril that extends from one Z-line to the next is called a ___________. This is also the functional part of a muscle.

The _________ _________ is the region where the somatic motor neuron communicates with the muscle fiber.

The space between the neuron and the muscle fiber is called the _________ _________.

______-______ cells are loaded with mitochondria and deliver prolonged, strong contractions. They contain myoglobin and have a rich blood supply. (Exp. arms and legs)

_____-________ cells contract rapidly and powerfully but with much less endurance. They rely on lactic acid fermentation as their source of energy and because of that tire quickly. (Exp. abs and chest muscles.)