Lab 14 - Muscles Head/Neck Analysis

Identify the anterior muscles of the head.

a

b

c

d

e

Sternocleidomastoid

Platysma

Orbicularis oris

Galea aponeurotica

Orbicularis oculi

Masseter

Epicranius (frontalis belly)

Label the muscles of the head.

a

b

c

d

e

f

Occipitalis

Platysma

Zygomaticus minor

Frontalis

Zygomaticus major

Temporalis

Label the muscles on the lateral view of a cadaver.

a

b

c

d

e

f

Platysma

Galea aponeurotica

Zygomaticus major

Frontalis

Masseter

Temporalis

Label the facial muscles visible on the cadaver.

a

b

c

d

e

Sternocleidomastoid

Orbicularis oris

Trapezius

Occipitalis

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

• I: skin around eye

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

• 
• O: fascia in upper chest

• O: zygomatic arch

• I: lateral surface of the mandible

• 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

• I: thyroid cartilage of larynx

• O: lateral surfaces of maxilla and mandible

• I: orbicularis oris

• O: styloid process

• 
• 
• O: manubrium of sternum

• I: hyoid bone

• 

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

Groups:

(a) Sternocleidomastoid

,

(b) Temporalis

,

(c) Sternohyoid

• 
• 
• I: mastoid process

• 
• O: medial clavicle and manubrium

• I: hyoid bone

• O: manubrium of sternum and medial clavicle

• I: coronoid process and anterior ramus of mandible

• O: temporal bone

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

• epicranius

• frontalis

• orbicularis oculi

• orbicularis oris