Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Orbicularis oculi

Masseter

Epicranius (frontalis belly)

Platysma

Galea aponeurotica

Sternocleidomastoid

Orbicularis oris

Label the muscles of the head.

a

b

c

d

e

f

Platysma

Zygomaticus major

Occipitalis

Temporalis

Zygomaticus minor

Frontalis

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Zygomaticus major

Platysma

Frontalis

Masseter

Temporalis

Galea aponeurotica

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Orbicularis oculi

Orbicularis oris

Trapezius

Sternocleidomastoid

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.

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

• O: fascia in upper chest

• 
• 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

• O: styloid process

• I: thyroid cartilage of larynx

• O: manubrium of sternum

• I: hyoid bone

• I: orbicularis oris

• 
• 
• 
• 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: hyoid bone

• 
• 
• I: coronoid process and anterior ramus of mandible

• O: manubrium of sternum and medial clavicle

• I: mastoid process

• O: medial clavicle and manubrium

• O: temporal bone

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

• epicranius

• frontalis

• orbicularis oculi

• orbicularis oris