Chapter 11 (The Muscular System III)

Question 1

Muscles of facial expression

Answer 1

Lie within the subcutaneous layer

Usually originate in the fascia or skull bones and insert into the skin.

Question 2

Function of the muscles of facial expression

Answer 2

Move the skin

Question 3

Extrinsic Eye Muscles

Answer 3

Lateral Rectus
Medial Rectus
Superior Rectus
Inferior Rectus
Superior Oblique
Inferior Oblique

Question 4

Muscles that move the mandible

Answer 4

Are known as ‘muscles of mastication’.

Question 5

Muscles of Mastication

Answer 5

Temporalis
Masseter
Buccinator
Lateral Pterygoid
Medial Pterygoid

Question 6

Temporalis, Masseter, and Medial Pterygoid

Answer 6

Account for the strength of the bite

Question 7

Medial and Lateral pterygoid

Answer 7

Help to chew by moving the mandible from side to side. Additionally, these muscles protract (protrude) the mandible

Question 8

The hyoid bone

Answer 8

Multiple muscles attach to, move, and stabilize it
They include the Digastric muscle and many others named ____hyoid, depending on their origins
These are frequently referred to as the strap muscles, and they are considered the external muscles to the larynx

Question 9

Extrinsic muscles of the tongue

Answer 9

Originate outside the tongue and insert into it. They move the tongue in various directions.

Question 10

Extrinsic muscles of the tongue (Examples)

Answer 10

Genioglossus
Styloglossus
Palatoglossus
Hyoglossus

Question 11

Intrinsic muscles of the tongue

Answer 11

Intrinsic tongue muscles originate and insert within the tongue. They change the shape of the tongue.

Question 12

Intrinsic muscles of the tongue (Examples)

Answer 12

1- Anterior and Lateral
a) Sternocleidomastoid
b) Scalenes (3)
2- Posterior
a) Splenius Capitus, Cervicis
b) Erector Spinae