Muscles Review

True or false Muscles are bundles of fibers held together by connective tissue.

true

When muscles contract they become what shape? Longer and thinner or shorter and thicker

Shorter and thicker (remember the gun show!!!)

When muscles function without conscious thought or control they are… Voluntary or involuntary

involuntary

What is the origin of the muscle? The part of the muscle that moves or does not move…

Does not move… That is the insertion

Muscles are partially contracted at all times True or false Muscles are partially contracted at all times

true What is this partial muscle contraction called?

Muscle tone

True or false The intercostal muscles are important for breathing.

true

What type of muscle is voluntary?

skeletal

What is the tough, sheet-like membrane that covers and protects the muscle tissues?

fascia

If the leg is moved out to the side of the body, the movement is called…

abduction

Swinging the arm in a circle is an example of… Abduction Extension Rotation circumduction

circumduction

If the lower leg is straightened away from the upper leg, the movement is called

extension

The muscle on the upper back and neck that extends the head and moves the shoulders is the..

trapezius

On the buttocks that extends the thigh…. Name these muscles: On the buttocks that extends the thigh….

Gluteus maximus

Front of the lower leg that flexes and inverts the foot….

Tibialis anterior

Extends from the ribs to the pubis and compresses the abdomen

Rectus abdominis

Muscle on the front of the thigh that extends the leg

Quadriceps femoris

Muscle on the upper chest that adducts and flexes the upper arm

Pectoralis Major