Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Masseter

Orbicularis oris

Epicranius (frontalis belly)

Platysma

Orbicularis oculi

Galea aponeurotica

Sternocleidomastoid

Label the muscles of the head.

a

b

c

d

e

f

Zygomaticus minor

Occipitalis

Frontalis

Platysma

Temporalis

Zygomaticus major

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Zygomaticus major

Platysma

Galea aponeurotica

Temporalis

Masseter

Frontalis

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Orbicularis oris

Trapezius

Sternocleidomastoid

Orbicularis oculi

Occipitalis

When the ​ ​ (a)   contracts, the corner of the mouth is drawn upward and laterally when laughing.

The ​ (b)   acts to compress the wall of the cheeks when air is blown out of the mouth.

The ​ (c)   causes the lips to close and pucker during kissing, whistling, and speaking.

The temporalis acts to ​ (d)   .

• zygomatic major
• buccinator
• orbicularis oris
• elevate the mandible
• orbicularis oculi
• depress the manible
• hyoid
• elevate the hyoid
• masseter

The (a)   can close the eye, as in blinking.

The (b)   can pull the head toward the chest.

The muscle used for pouting and to express horror is the (c)   .

The (d)   raises the eyebrows and moves the scalp.

• orbicularis oculi
• hyoid
• masseter
• sternocleidomastoid
• platysma
• epicranius
• zygomaticus major

The name of the muscle is given. Identify origin, insertion and image of the muscle.

Groups:

(a) Masseter

,

(b) Platysma

,

(c) Orbicularis Oculi

• 
• O: frontal and maxillary bones.

• O: fascia in upper chest

• I: lower border of mandible and skin around corner of mouth

• 
• 
• O: zygomatic arch

• I: lateral surface of the mandible

• I: skin around eye

The name of the muscle is given. Identify origin, insertion and image of the muscle.

Groups:

(a) Sternothyroid

,

(b) Buccinator

,

(c) Stylohyoid

• I: orbicularis oris

• 
• O: manubrium of sternum

• O: styloid process

• O: lateral surfaces of maxilla and mandible

• I: hyoid bone

• I: thyroid cartilage of larynx

• 
• 

The name of the muscle is given. Identify origin, insertion and image of the muscle.

Groups:

(a) Sternocleidomastoid

,

(b) Temporalis

,

(c) Sternohyoid

• 
• I: hyoid bone

• O: temporal bone

• I: coronoid process and anterior ramus of mandible

• I: mastoid process

• O: manubrium of sternum and medial clavicle

• 
• O: medial clavicle and manubrium

• 

The rising of the eye brows is the action of what muscle?

• epicranius

• frontalis

• orbicularis oculi

• orbicularis oris