Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Orbicularis oculi

Platysma

Epicranius (frontalis belly)

Galea aponeurotica

Masseter

Orbicularis oris

Sternocleidomastoid

Label the muscles of the head.

a

b

c

d

e

f

Frontalis

Temporalis

Zygomaticus minor

Zygomaticus major

Occipitalis

Platysma

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Zygomaticus major

Galea aponeurotica

Masseter

Temporalis

Frontalis

Platysma

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Orbicularis oris

Occipitalis

Orbicularis oculi

Trapezius

Sternocleidomastoid

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: skin around eye

• I: lateral surface of the mandible

• 
• O: fascia in upper chest

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

• 
• O: frontal and maxillary bones.

• 

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

Groups:

(a) Sternothyroid

,

(b) Buccinator

,

(c) Stylohyoid

• O: manubrium of sternum

• 
• 
• I: orbicularis oris

• O: lateral surfaces of maxilla and mandible

• I: hyoid bone

• I: thyroid cartilage of larynx

• 
• O: styloid process

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

Groups:

(a) Sternocleidomastoid

,

(b) Temporalis

,

(c) Sternohyoid

• 
• 
• O: manubrium of sternum and medial clavicle

• I: hyoid bone

• O: temporal bone

• 
• I: mastoid process

• 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