Muscular System

Movement of the body occurs because muscles ___ or shorten.

• contract
• stabilize
• rotate
• expand

Movement ---> Muscles contract --> Muscles pull on tendons --> tendons pull on ___

• bones
• muscle fibers
• ligaments
• cartilage

What are the 3 types of muscle tissue?

• Skeletal muscle

• Cardiac muscle

• Smooth muscle

• Tendons

Which of the following statements about smooth muscle is NOT true?

• Involuntary

• Striated

• 1. Found in internal organs

• 1. Usually arranged in two layers

Where are cardiac muscles located?

• Cardiac muscles are found in the lungs.
• Cardiac muscles are located in the stomach.
• Cardiac muscles are present in the brain.
• Cardiac muscles are located in the heart.

Cardiac muscles contain

• Branching chains of cells

• Intercalated discs

• • Steady, rhythmic contractions

• Sugar

Tags

NGSS.HS-LS1-3

What's myocardium?

• The myocardium is responsible for oxygen exchange in the lungs.
• The myocardium is the heart muscle tissue.

• The myocardium is the outer layer of the heart.
• The myocardium is a type of blood vessel.

What type of muscle is voluntary, striated, and attached to bones?

• Smooth muscle
• Cardiac muscle
• Skeletal muscle
• Involuntary muscle

A muscle cell is a muscle ____.

• cell
• tissue
• fiber
• organ

Define fascicle.

• A fascicle is a bundle of muscle fibers.

• A fascicle refers to a group of organs.
• A fascicle is a single nerve cell.
• A fascicle is a type of muscle contraction.