Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Platysma

Galea aponeurotica

Masseter

Orbicularis oculi

Orbicularis oris

Sternocleidomastoid

Epicranius (frontalis belly)

Label the muscles of the head.

a

b

c

d

e

f

Zygomaticus major

Occipitalis

Temporalis

Frontalis

Platysma

Zygomaticus minor

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Platysma

Zygomaticus major

Temporalis

Frontalis

Galea aponeurotica

Masseter

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Sternocleidomastoid

Occipitalis

Orbicularis oris

Trapezius

Orbicularis oculi

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: skin around eye

• O: zygomatic arch

• I: lateral surface of the mandible

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

• O: fascia in upper chest

• 
• 

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: 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

• 
• O: temporal bone

• O: manubrium of sternum and medial clavicle

• 
• I: mastoid process

• 
• I: hyoid bone

• O: medial clavicle and manubrium

• 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