ALL MUSCLES (COMPREHENSIVE REVIEW) Flashcards
(116 cards)
1
Q
levator palpebrae superioris (origin)
A
lesser wing of sphenoid bone (anterior surface)
2
Q
levator palpebrae superioris (insertion)
A
upper eyelid skin and fascia
3
Q
levator palpebrae superioris (nerve)
A
oculomotor nerve (CN III)
4
Q
levator palpebrae superioris (action)
A
elevates upper eyelid
5
Q
buccinator (origin)
A
maxilla and mandible (posterior alveolar processes of both bones); pterygomandibular raphe
6
Q
buccinator (insertion)
A
modiolus (just lateral to angle of mouth)
7
Q
buccinator (nerve)
A
facial nerve (CN VII)
8
Q
buccinator (action)
A
compresses cheeks
9
Q
corrugator supercilii (origin)
A
frontal bone just above nose (lateral to glabella)
10
Q
corrugator supercilii (insertion)
A
medial portion of skin of eyebrows
11
Q
corrugator supercilii (nerve)
A
zygomatic branch of facial nerve (CN VII)
12
Q
corrugator supercilii (action)
A
draws eyebrows downwards and medially (“thinker’s brow”)
13
Q
depressor anguli oris (origin)
A
along oblique line of mandible; lateral aspect of mental tubercle of mandible
14
Q
depressor anguli oris (insertion)
A
modiolus (near angle of mouth)
15
Q
depressor anguli oris (nerve)
A
facial nerve (CN VII)
16
Q
depressor anguli oris (action)
A
depresses angle of mouth (frown)
17
Q
depressor labii inferioris (origin)
A
mandible (between symphysis and mental foramen)
18
Q
depressor labii inferioris (insertion)
A
skin and fascia of lower lip
19
Q
depressor labii inferioris (nerve)
A
facial nerve (CN VII)
20
Q
depressor labii inferioris (action)
A
draws lower lip downwards and medially; everts lower lip
21
Q
depressor septi nasi (origin)
A
incisive fossa of maxilla
22
Q
depressor septi nasi (insertion)
A
septum and alar cartilage of nose
23
Q
depressor septi nasi (nerve)
A
facial nerve (CN VII)
24
Q
depressor septi nasi (action)
A
constricts nostrils
25
frontalis (origin)
galea aponeurotica
26
frontalis (insertion)
skin and fascia above eyes and nose
27
frontalis (nerve)
temporal branch of facial nerve (CN VII)
28
frontalis (action)
draws scalp posteriorly to raise and wrinkle eyebrows (surprise)
29
levator anguli oris (origin)
below infraorbital foramen of maxilla
30
levator anguli oris (insertion)
modiolus (near angle of mouth)
31
levator anguli oris (nerve)
facial nerve (CN VII)
32
levator anguli oris (action)
elevates angle of mouth (smile)
33
levator labii superioris (origin)
medial inferior orbital margin of maxilla
34
levator labii superioris (insertion)
upper lip muscles
35
levator labii superioris (nerve)
facial nerve (CN VII)
36
levator labii superioris (action)
elevates and everts upper lip
37
levator labii superioris alaeque nasi (origin)
frontal process of maxilla
38
levator labii superior alaeque nasi (insertion)
lateral slip: upper lip muscles
medial slip: alar cartilage of nose
39
levator labii superioris alaeque nasi (nerve)
facial nerve (CN VII)
40
levator labii superioris alaeque nasi (action)
elevates and everts upper lip; constricts nostrils
41
mentalis (origin)
incisive fossa of mandible
42
mentalis (insertion)
skin and fascia of chin
43
mentalis (nerve)
facial nerve (CN VII)
44
mentalis (action)
elevates and everts lower lip; wrinkles skin of chin
45
nasalis (origin)
transverse part: maxilla (lateral to nose)
alar part: maxilla, superior to canine alveolar process
46
nasalis (insertion)
transverse part: opposite side nasalis over upper cartilage of nose
alar part: alar cartilage of nose (nasal wing)
47
nasalis (nerve)
facial nerve (CN VII)
48
nasalis (action)
flares nostrils (particularly in forced respiration)
49
occipitalis (origin)
lateral 2/3 of superior nuchal line and external occipital protuberance
50
occipitalis (insertion)
galea aponeurotica
51
occipitalis (nerve)
posterior auricular branch of facial nerve (CN VII)
52
occipitalis (action)
draws scalp posteriorly to raise and wrinkle eyebrows
53
orbicularis oculi (origin)
orbital portion: nasal process of frontal bone
palpebral portion: palpebral ligament
lacrimal portion: lacrimal crest of lacrimal bone
54
orbicularis oculi (insertion)
circumferentially around orbit meeting at origin
55
orbicularis oculi (nerve)
zygomatic branch of facial nerve (CN VII)
56
orbicularis oculi (action)
squints eye, closes eye tightly, depresses upper eyelid; palpebral portion elevates lower eyelid
57
orbicularis oris (origin)
modiolus (just lateral to angle of mouth)
58
orbicularis oris (insertion)
circumferentially around mouth; blends with other muscles
59
orbicularis oris (nerve)
facial nerve (CN VII)
60
orbicularis oris (action)
closes mouth; protrudes/puckers lips
61
platysma (origin)
deep fascia over pectoralis major and deltoid
62
platysma (insertion)
body of mandible and angle of mouth
63
platysma (nerve)
cervical branch of facial nerve (CN VII)
64
platysma (action)
tenses skin over lower neck; depresses mandible and angle of mouth
65
procerus (origin)
nasal bone and cartilages
66
procerus (insertion)
skin and fascia between eyebrows
67
procerus (nerve)
superior buccal branches of facial nerve (CN VII)
68
procerus (action)
draws medial eyebrows downwards (menacing expression); wrinkles skin of superior nose
69
risorius (origin)
parotid fascia (superficial to masseter)
70
risorius (insertion)
modiolus (near angle of mouth)
71
risorius (nerve)
facial nerve (CN VII)
72
risorius (action)
draws angle of mouth laterally (false small)
73
zygomaticus major (origin)
zygomatic bone (anterior to zygomatico-temporal suture)
74
zygomaticus major (insertion)
modiolus (near angle of mouth)
75
zygomaticus major (nerve)
facial nerve (CN VII)
76
zygomaticus major (action)
elevates angle of mouth (smiling); draws angle of mouth laterally
77
zygomaticus minor (origin)
zygomatic bone (posterior to zygomaticomaxillaty suture)
78
zygomaticus minor (insertion)
skin, fascia, and muscles of upper lip
78
zygomaticus minor (nerve)
facial nerve (CN VII)
79
zygomaticus minor (action)
elevates and everts upper lip
80
temporalis (origin)
temporal fossa of temporalis and sphenoid
81
temporalis (insertion)
coronoid process of mandible
82
temporalis (nerve)
mandibular branch of trigeminal nerve (V3)
83
temporalis (action)
anterior fibers: close (elevate) jaw
middle and posterior fibers: retract mandible (open jaw)
84
internal/medial pterygoid (origin)
medial surface of lateral pterygoid plate
85
internal/medial pterygoid (insertion)
medial aspect of angle of mandible
86
internal/medial pterygoid (nerve)
mandibular branch of trigeminal nerve (V3)
86
internal/medial pterygoid (action)
closes (elevates) the jaw
86
masseter (origin)
zygomatic arch of temporalis
87
masseter (insertion)
angle of mandible
88
masseter (nerve)
mandibular branch of trigeminal nerve (V3)
89
masseter (action)
elevates (closes) jaw
90
external/lateral pterygoid (origin)
superior head: greater wing of sphenoid
inferior head: lateral pterygoid plate
91
external/lateral pterygoid (insertion)
joint capsule of condylar process
92
external/lateral pterygoid (nerve)
mandibular branch of trigeminal nerve (V3)
93
external/lateral pterygoid (action)
protrusion of the jaw; only muscle of the masticators to do so
94
sternocleidomastoid (origin)
manubrium sterni and medial third of clavicle
95
sternocleidomastoid (insertion)
mastoid process of temporal bone and occipital bone
96
sternocleidomastoid (nerve)
spinal accessory nerve and C2 and C3
97
sternocleidomastoid (action)
both muscles work together to extend head and flex neck; one muscle rotates head to opposite side
98
posterior belly of digastric (origin)
mastoid process of temporal bone
99
posterior belly of digastric (insertion)
intermediate tendon is held to hyoid bone by fascial sling
100
posterior belly of digastric (nerve)
facial nerve
101
posterior belly of digastric (action)
depresses mandible and elevates hyoid bone
102
anterior belly of digastric (origin)
body of mandible
103
anterior belly of digastric (insertion)
intermediate tendon is held to hyoid bone by fascial sling
104
anterior belly of digastric (nerve)
nerve to mylohyoid
105
anterior belly of digastric (action)
depresses mandible and elevates hyoid bone
106
stylohyoid (origin)
styloid process
107
stylohyoid (insertion)
body of mandible
108
stylohyoid (nerve)
facial nerve
109
stylohyoid (action)
elevates hyoid bone
110
mylohyoid (origin)
mylohyoid line of body of mandible
111
mylohyoid (insertion)
body of hyoid bone and fibrous raphe
112
mylohyoid (nerve)
inferior alveolar nerve
113
mylohyoid (action)
elevates floor of mouth and hyoid bone; depresses mandible
