Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Orbicularis oculi

Epicranius (frontalis belly)

Masseter

Sternocleidomastoid

Orbicularis oris

Galea aponeurotica

Platysma

Label the muscles of the head.

a

b

c

d

e

f

Platysma

Frontalis

Zygomaticus minor

Occipitalis

Temporalis

Zygomaticus major

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Zygomaticus major

Temporalis

Galea aponeurotica

Masseter

Frontalis

Platysma

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Orbicularis oculi

Sternocleidomastoid

Orbicularis oris

Occipitalis

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: frontal and maxillary bones.

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

• O: zygomatic arch

• I: skin around eye

• 
• O: fascia in upper chest

• 
• 
• 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: lateral surfaces of maxilla and mandible

• I: orbicularis oris

• O: manubrium of sternum

• 
• 
• I: hyoid bone

• O: styloid process

• 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

• I: mastoid process

• 
• 
• O: manubrium of sternum and medial clavicle

• O: medial clavicle and manubrium

• O: temporal bone

• I: coronoid process and anterior ramus of mandible

• 

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

• epicranius

• frontalis

• orbicularis oculi

• orbicularis oris