Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Orbicularis oris

Platysma

Epicranius (frontalis belly)

Galea aponeurotica

Masseter

Orbicularis oculi

Sternocleidomastoid

Label the muscles of the head.

a

b

c

d

e

f

Platysma

Zygomaticus minor

Occipitalis

Temporalis

Frontalis

Zygomaticus major

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Frontalis

Masseter

Galea aponeurotica

Zygomaticus major

Platysma

Temporalis

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Trapezius

Orbicularis oculi

Orbicularis oris

Occipitalis

Sternocleidomastoid

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

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

• O: zygomatic arch

• O: fascia in upper chest

• I: skin around eye

• O: frontal and maxillary bones.

• 
• I: lateral surface of the mandible

• 
• 

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

Groups:

(a) Sternothyroid

,

(b) Buccinator

,

(c) Stylohyoid

• 
• O: styloid process

• O: manubrium of sternum

• I: thyroid cartilage of larynx

• 
• 
• I: orbicularis oris

• I: hyoid bone

• O: lateral surfaces of maxilla and mandible

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

Groups:

(a) Sternocleidomastoid

,

(b) Temporalis

,

(c) Sternohyoid

• I: coronoid process and anterior ramus of mandible

• O: temporal bone

• O: manubrium of sternum and medial clavicle

• I: hyoid bone

• O: medial clavicle and manubrium

• 
• 
• I: mastoid process

• 

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

• epicranius

• frontalis

• orbicularis oculi

• orbicularis oris