HBS 1.2.2 - Muscle Rules and Classifications (12/08)

What type of muscle is found attached to bones throughout the body?

• smooth

• cardiac

• skeletal

• all

Muscle Rule 1: Muscles must have at least ___ attachments

Muscle Rule 1: Muscles must cross at least 1...

Muscle Rule 2: Muscles always______ to get shorter

• pull

• push

• contract

• lengthen

Tags

NGSS.MS-PS2-1

Muscle Rule 3: The attachment that moves is known as the ...

• insertion

• origin

Muscle Rule 3: The attachment that remains stationary is known as the ...

• insertion

• origin

Muscle Rule 4: Muscles that decrease ventral angles are known as...

• flexors

• extensors

Muscle Rule 5: Muscles work in opposing...

Tags

NGSS.MS-PS2-1

Muscle Rule 6: Muscle ___________ point to the attachments and show the direction of pull.

Match the following that describe the brachial muscle:

• Flexes the elbow

• Origin

• • Halfway down the humerus

• Action

• Proximal ulna

• Insertion