Head, Neck And Face

Question 1

Platysma

Answer 1

O: fascia of superior pectoralis major and deltoid muscles
I: inferior angle of mandible
A: depresses mandible, tenses skin of anterior neck and chest
N: facial nerve
Pg 228

Question 2

Splenius capitis

Answer 2

O: nuchal ligament and spinous process of C7-T3
I: mastoid process and lateral portion of superior nuchal line
A: extends head and neck, laterally flexes head and neck
N: dorsal primary rami

Question 3

Temporalis pg 237

Answer 3

O: temporal fossa
I: coronoid process and anterior border of ramus of the mandible
A: elevates the mandible, retracts the mandible
N: trigeminal nerve

Question 4

Masseter: pg 238

Answer 4

O: zygomatic arch
I: angle, ramus, and coronoid process if the mandible
A: elevates the mandible
N: trigeminal nerve

Question 5

Sternocleidomastoid

220

Answer 5

O: sterols head: superior manubrium
O: clavicular head: medial 1/3
I: mastoid process of temporal bone 
A: extends the head and upper cervicals
-flexes the neck 
-Laterally flexes the head and neck 
-rotates head and neck to opposite side 
N: accessory nerve

Question 6

Muscles involved in jaw elevation 3

Answer 6

Temporalis
Masseter
Medial pterygoid

Question 7

Depression

Answer 7

Supra hyoid
Digastric
Lateral pterygoids

Question 8

Retraction (1)

Answer 8

Temporalis