OIA of Head and Neck Muscles Flashcards
(43 cards)
1
Q
origin of masseter
A
- zygomatic arch
- zygomatic bone
2
Q
insertion of masseter
A
- angle and ramus of mandible
3
Q
origin of temporalis
A
- temporal fossa
4
Q
insertion of temporalis
A
- coronoid process of mandible (via a tendon deep to zygomatic arch)
5
Q
what muscles elevate the mandible?
A
masseter and temporalis
6
Q
origin of medial pterygoid
A
- medial surface of lateral pterygoid plate of sphenoid bone
- maxilla
- palatine bone
7
Q
insertion of medial pterygoid
A
- medial surface of mandible (near angle)
8
Q
origin of lateral pterygoid
A
- greater wing and lateral pterygoid plate of sphenoid bone
9
Q
insertion of lateral pterygoid
A
- condylar process of mandible
- capsule of temporomandibular joint
10
Q
origin of genioglossus
A
- internal surface of mandible near symphysis
11
Q
insertion of genioglossus
A
- inferior aspect of the tongue
- body of the hyoid bone
12
Q
origin of hyoglossus
A
- body of hyoid bone
- greater horn of hyoid bone
13
Q
insertion of hyoglossus
A
- inferolateral tongue
14
Q
origin of styloglossus
A
- styloid process of temporal bone
15
Q
insertion of syloglossus
A
- lateral inferior aspect of tongue
16
Q
origin of corrugator supercilli
A
- arch of frontal bone above nasal bone
17
Q
insertion of corrugator supercilli
A
- skin of eyebrow
18
Q
origin of orbicularis oculi
A
- frontal bone
- maxillary bone
- ligaments around orbit
19
Q
insertion of orbicularis oculi
A
- tissue of eyelid
20
Q
origin of zygomaticus
A
- zygomatic bone
21
Q
insertion of zygomaticus
A
- skin and muscle at corner of mouth
22
Q
origin of orbicularis oris
A
- indirectly from maxilla and mandible
- blended with facial muscles at lips
23
Q
insertion of orbicularis oris
A
- muscles and skin at angles of mouth
24
Q
origin of mentalis
A
- mandible below incisors
25
insertion of mentalis
- skin of chin
26
origin of platysma
- fascia of chest (over pec and deltoid)
27
insertion of platysma
- lower margin of mandible
- skin and muscle at corner of mouth
28
origin of risorius
- lateral fascia of masseter muscle
29
insertion of risorius
- skin at angles of mouth
30
origin of levator labii superioris
- zygomatic bone
- infraorbital margin of maxilla
31
insertion of levator labii superioris
- skin and muscle of upper lip
32
origin of depressor labii inferioris
- body of mandible lateral to its midline
33
insertion of depressor labii inferioris
- skin and muscle of lower lip
34
origin of depressor anguli oris
- body of mandible below incisors
35
insertion of depressor anguli oris
- skin and muscle at angle of mouth (below zygomaticus insertion)
36
origin of buccinator
- molar region of maxilla and mandible
37
insertion of buccinator
- orbicularis oris
38
origin of splenius
- ligamentum nuchae
- spinous processes of C7- T6
39
insertion of splenius
- mastoid process of temporal and occipital bone
- transverse processes C2-C4
40
origin of sternocleidomastoid
- manubrium of sternum and medial portion of clavicle
41
insertion of sternocleidomastoid
- mastoid process of temporal bone
- superior nuchal line of occipital bone
42
origin occipitofrontalis (epicranius)
Frontal belly (frontalis) = skin of eyebrow, muscles of forehead
Occipital belly (occipitalis) = lateral 2/3 of superior nuchal line
43
insertion of occipitofrontalis (epicranius)
epicranial aponeurosis
