Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Epicranius (frontalis belly)

Galea aponeurotica

Orbicularis oculi

Sternocleidomastoid

Orbicularis oris

Masseter

Platysma

Label the muscles of the head.

a

b

c

d

e

f

Zygomaticus minor

Zygomaticus major

Platysma

Frontalis

Occipitalis

Temporalis

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Galea aponeurotica

Platysma

Masseter

Frontalis

Temporalis

Zygomaticus major

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Sternocleidomastoid

Occipitalis

Orbicularis oris

Orbicularis oculi

Trapezius

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: zygomatic arch

• 
• I: lateral surface of the mandible

• O: frontal and maxillary bones.

• O: fascia in upper chest

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

• 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: lateral surfaces of maxilla and mandible

• O: styloid process

• O: manubrium of sternum

• 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

• O: medial clavicle and manubrium

• 
• O: manubrium of sternum and medial clavicle

• 
• I: hyoid bone

• O: temporal bone

• I: coronoid process and anterior ramus of mandible

• 
• I: mastoid process

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

• epicranius

• frontalis

• orbicularis oculi

• orbicularis oris