Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Orbicularis oculi

Masseter

Orbicularis oris

Platysma

Epicranius (frontalis belly)

Galea aponeurotica

Sternocleidomastoid

Label the muscles of the head.

a

b

c

d

e

f

Platysma

Occipitalis

Frontalis

Zygomaticus minor

Temporalis

Zygomaticus major

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Masseter

Zygomaticus major

Galea aponeurotica

Platysma

Temporalis

Frontalis

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Orbicularis oculi

Occipitalis

Trapezius

Sternocleidomastoid

Orbicularis oris

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: frontal and maxillary bones.

• 
• 
• O: fascia in upper chest

• I: lateral surface of the mandible

• O: zygomatic arch

• 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: hyoid bone

• 
• 
• 
• O: styloid process

• O: lateral surfaces of maxilla and mandible

• O: manubrium of sternum

• I: thyroid cartilage of larynx

• I: orbicularis oris

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

Groups:

(a) Sternocleidomastoid

,

(b) Temporalis

,

(c) Sternohyoid

• O: temporal bone

• I: hyoid bone

• O: manubrium of sternum and medial clavicle

• I: coronoid process and anterior ramus of mandible

• 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