L7.4 - Muscles of the Body

Question 1

Origin

Answer 1

Where a muscle is attached to the skeleton: immovable point of attachment

Question 2

Insertion

Answer 2

The movable point of attachment; can be to a bone, to cartilage, internal organ, or other muscle groups

Question 3

Buccinator

Answer 3

Origin - jaw bones
Insertion - muscles of the lips
A flat, thin muscle in the wall of the cheek

Question 4

Masseter

Answer 4

Origin - cheek bones
Insertion - mandible
A muscle which closes the jaw in chewing

Question 5

Orbicularis oris

Answer 5

Origin - middle of the upper and lower jaws
Insertion - lips
A complex circular muscle that forms most of the lips