8.7 Skeletal Muscles & Body Movement

Bones and muscles interact as _____ for movement.

• compound machines

• levers

• sarcomeres

• tension

Tags

NGSS.MS-PS2-1

What attaches a muscle to the bone.

• ligaments

• tendons

• tension

• levers

The _____ of a skeletal muscle in the less moveable end

• origin

• insertion

• antagonist

• synergist

The _____ of a skeletal muscle the more moveable end

• origin

• insertion

• antagonist

• synergist

When muscles contract, it pulls_____

• the insertion toward the origin

• the origin toward the insertion

• the less moveable end toward the more moveable end

Muscles can have only 1 origin and 1 insertion.

• true

• false

The biceps brachii is named that because _____.

• It has 2 origins.

• It has 2 insertions

• It has 4 origins

• It has 4 insertions

Decreases the angle between bones at a joint

• flexion

• extension

• elevation

• retraction

Increases the angle between bones at a joint

• flexion

• extension

• elevation

• retraction

Skeletal muscles usually function ___.

• alone

• as groups

Tags

NGSS.MS-LS1-3