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Flashcards in Head and Neck Deck (11)
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1
Q

Sternocleidomastoid

A

A:
Unilaterally: Laterally flex the head and neck to the same side, rotate the head and neck to the opposite side
Bilaterally: Flex the neck, assist in inhalation (elevation of the rib cage)
O:
Sternal head: top of manubrium
Clavicular head: medial one-third of the clavicle
I: Mastoid process of temporal bone and the lateral portion of superior nuchal line of occiput
N: Spinal accessory

2
Q

Anterior Scalene

A

O: Transverse processes of third through sixth cervical vertebrae (anterior tubercles)
I: First rib
A: unilaterally, laterally flex the head and neck to the same side; bilaterally, elevate ribs
N: C3-8

3
Q

Middle Scalene

A

O: Transverse processes of second through seventh cervical vertebrae (posterior tubercles)
I: First rib
A: unilaterally, laterally flex the head and neck to the same side; bilaterally, elevate ribs
N: C3-8

4
Q

Posterior Scalene

A

O: Transverse processes of fifth and sixth cervical vertebrae (posterior tubercles)
I: Second rib
A: unilaterally, laterally flex the head and neck to the same side; bilaterally, elevate ribs
N: C3-8

5
Q

Masseter

A

A: Elevate the mandible (temporomandibular joint)
O: Zygomatic arch
I: Angle and ramus of mandible
N: Trigeminal (V) nerve

6
Q

Temporalis

A

A: Elevate the mandible (temporomandibular joint), retract the mandible (temporomandibular joint).
O: Temporal fossa and fascia
I: Coronoid process of the mandible
N: Trigeminal (V) nerve

7
Q

Suprahyoids

A
(3) Geniohyoid, mylohyoid, stylohyoid
A:  Elevate hyoid and tongue, depress mandible (temporomandibular joint)
O:
Geniohyoid, mylohyoid:  underside of mandible
Stylohyoid:  styloid process
I:  Hyoid bone
N:  
Geniohyoid:  C1,C2
Mylohyoid:  Trigeminal (V)
Stylohyoid:  Facial (VII)
8
Q

Digastric

A

A: With hyoid bone fixed, it depresses the mandible (temporomandibular joint), with mandible fixed, it elevates the hyoid bone, retracts the mandible (TM joint)
O: Mastoid process (deep to stenocleidomastoid and splenius capitis)
I: Inferior border of the mandible
N: Trigeminal and facial (VII)

9
Q

Infrahyoids

A

(3) sternohyoid, thyrohyoid, omohyoid
A: Depress the hyoid bone and thyroid cartilage
O:
Sternohyoid: thyroid cartilage
Thyrohyoid: thyroid careilage
Omohyoid: superior border of the scapula
I:
Sternohyoid, omohyoid, and thyrohyoid: hyoid bone
Sternohyoid: thyroid cartilage
N: C1-3

10
Q

Platysma

A

A: Assist in depression of the mandible (temporomandibular joint), tighten the fascia of the neck
O: Fascia covering superior part of pectoralis major
I: Base of mandible, skin of lower part of face
N: Facial

11
Q

Pterygoids

A
Medial and lateral
A:  Elevate and protect mandible 
O:  Sphenoid bone
I:  Mandible
N: Trigeminal