Muscles and Their Actions

In this picture, these group of muscles are showing what kind of action?

• Flexors

• Extensors

Moving a limb away from midline

• Pronation

• Abduction

• Adduction

• Flexion

Flexion...

• Decreases angle of the joint

• Increases angle at the joint

• Moves limb away from midline

• Moves limb toward midline

Moving a limb away from midline

• Pronation

• Abduction

• Adduction

• Flexion

The picture shows what kind of movement?

• Flexion

• Extension

• Adduction

• Abduction

The internal oblique muscle gets its name ____________________.

• Because of its shape

• Because of its location

• Because of the direction of muscle fibers

• Because of its tendons of origin

The deltoid muscle gets its name ____________________.

• Because of its shape

• Because of its location

• Because of the direction of muscle fibers

• Because of its tendons of origin

Movement of a limb toward the body midline

• Abduction

• Flexion

• Adduction

• Pronation

Turn palm upward

• flexion

• extention

• rotation

• supination

Skeletal muscles always work _____.

• in groups

• in pairs

• singly

• none of the above