Muscles A&P Flashcards
(156 cards)
1
Q
Biceps Brachii-Origin
A
long head: tubercle above glenoid cavity
short head: tip of coracoid process of scapula
2
Q
Biceps Brachii-Insertion
A
common tendon to radial tuberosity
3
Q
Biceps Brachii-Action
A
flexes elbow joint, supinates forearm, weak flexor at shoulder
4
Q
Biceps Femoris-Origin
A
long head-Ischial tuberosity
short head- linea aspera and distal femur
5
Q
Biceps Femoris-Insertion
A
common tendon into head of fibula, lateral condyl of tibia
6
Q
Biceps Femoris- Action
A
flexes the leg at knee, extends thigh, laterally rotates the knee is flexed
7
Q
Brachialis-Origin
A
frontal distal humerus
8
Q
Brachialis-Insertion
A
coronoid process of ulna
9
Q
Brachialis-Action
A
flexes forearm at elbow
10
Q
Brachioradialis-Origin
A
later supercondylar ridge of humerus
11
Q
Brachioradialis-Insertion
A
base of styloid process of radius
12
Q
Brachioradialis-Action
A
strong forearm flexor(when forearm is partially flexed)
stabilizes elbow when rapid flexion-extension
13
Q
Deltoid-Origin
A
lateral 3rd of clavicle, acromion, spine of scapula
14
Q
Deltoid-Insertion
A
deltoid tuberosity of the humerus
15
Q
Deltoid-Action
A
flexes and medially rotates humerus with anterior fibers
extends and laterally rotates arm with posterior fibers
16
Q
extensor radialis brevis-origin
A
common extensor tendon on anterior surface of the lateral epicondyle of the humerus
17
Q
extensor radialis brevis-insertion
A
dorsal surface of base of metacarpal 3
18
Q
extensor radialis brevis-action
A
assists in abduction of the wrist
extends something?
19
Q
extensor radialis longus-origin
A
distal 1/3 lateral supracondylar ridge of humerus
20
Q
extensor radialis longus-insertion
A
dorsal surface of base of metacarpal 2
21
Q
extensor radialis longus-action
A
extends wrist w/ extensor carpi ulnaris
abducts write with flexor carpi radials
22
Q
extensor radialis ulnaris-origin
A
lateral epicondyle of humerus
23
Q
extensor radialis ulnaris-insertion
A
base of the 5th metacarpal
24
Q
extensor radialis ulnaris- action
A
extends and abducts wrist
25
extensor digitorum-origin
common extensor tendon anterior surface of lateral epicondyl of humerus
26
extensor digitorum-insertion
extensory expansions of digits 2-5
27
extensor digitorum-action
finger extension, extends wrist, abduct fingers
28
extensor hallucis longus-origin
middle of anterior surface of fibular, interosseous membrane
29
extensor hallucis longus-insertion
distal phalanx of big toe digit 1
30
extensory hallucis longus-action
extends big toe, dorsiflexes foot
31
external intercostals-origin
inferior border of rib above
32
external intercostals-insertion
superior border of rib below
33
external intercostals-action
elevates rib cage, helps in inspiration
34
external obliques-origin
outer surface of lower 8 ribs
35
external obliques-insertion
linea aspera vis aponeurosis
36
external obliques-action
support and compress abdomen, flex vertebral clump anterior ally, laterally flexes, rotates, forces expiration
37
flexor carpi radiali-origin
medial epicondyle of humerus
38
flexor carpi radiali-insertion
base of 2nd and 3rd metacarpals
39
flexor carpi radiali-action
powerful flexor of wrist, abducts hand
40
flexor carpi ulnaris-origin
medial epicondyle of humerus, olecranon process, posterior surface of ulna
41
flexor carpi ulnaris-insertion
pisiform and hamate bones, base of 5th metacarpal(anterior)
42
flexor carpi ulnaris-action
powerful flexor of wrist, adducts hands w/extensor carpi ulnaris, stabilizes wrist during finger extension
43
flexor digitorm superficialis-origin
medial epicondyle of humerus, coronoid process of ulna. shaft of radius
44
flexor digitorum superficialis-insertion
by 4 tendons into middle phalanges of fingers 2-5
45
flexor digitorum superificialis-action
flexes wrist and middle phalanges of fingers 2-5
46
flexor hallucis longus-origin
midshaft of fibula, interosseous membrane
47
flexor hallucis longus- insertion
tendons runs underfoot to distal phalanx of big toe-digit 1
48
flexor hallucis longus-action
flexes big toe, plantar flexes, inverts foot
49
gastrocnemius-origin
by two heads from medial and lateral condyles of femur
50
gastrocnemius-insertion
posterios calcanues via calcaneal tendon
51
gastrocnemius- action
plantar flexes foot when knee is extended, flexes knee when foot is dorsiflexed
52
gluteus maximus-origin
dorsal ilium, sacrum, coccyx
53
gluteus maximus-insertion
gluteal tuberosity of femur, iliotibial tract
54
gluteus maximus-action
extensor of thigh, laterally rotates and abducts thigh, inactive during standing
55
gluteus medius-origin
lateral surface of ilium between anterior and posterior gluteal lines
56
gluteus medius-insertion
via short tendon into lateral aspect of greater trochanter
57
gluteus medius-action
abducts thigh, anterior part rotates hip medially, posterior part rotates hip laterally
58
infraspinatus-origin
infraspinous fossa of scapular
59
infraspinatus-insertions
greater tubercle of humerus, posterior to supraspinatus
60
infraspinatus-action
holds head of humerus in glenoid cavity, stabilizes shoulder joint, rotates humerus laterally
61
internal intercostals-origin
superior border of rib below
62
internal intercostals-insertion
inferior border of rib above(costal groove)
63
internal intercostals-action
depress rib cage, forced expiration
64
internal olique-origin
lumbar fascia, iliac crest, inquinal ligament
65
internal oblique-insertion
linea alba, pubic crest, ribs 10-12, costal margin
66
internal oblique-action
support and compress abdomen, raise intraabdominal pressure, flex vertebral column anteriorally, lateral flexes, assist if forced expiration
67
latissimus dorsi-origin
via lumbodorsal fascia into spines t7-t5, lower 4 ribs and iliac crest
68
latissimus dorsi-insertion
floor of intertubercular groove of humerus
69
latissimus dorsi-action
arm adductor, extension, hyperextension, rotates arm and shoulder, depresses scapula
70
levator scapula-origin
transverse processes of c1-c4
71
levator scapula-insertion
medial border of scapula, superior to spine
72
levator scapula-action
elevates and adducts scapula, tilts glenoid cavity down. flexes neck to same side
73
masseter-origin
zygomatic arch and maxilla
74
masseter- insertion
angle and ramus of mandible
75
masseter-action
primse mover of jaw closure, elevates mandible
76
pectineus-orgin
pectineal line of pubis
77
pectineus-insertion
inferior from lesser trochanter to line aspera
78
pectineus-action
prime mover of thigh flexion, lateral flexion of vertebral column
79
pectoralis major-origin
anterior surface of medial clavicle
80
pectoralis major-insertion
lateral lip of inter tubercle groove of humerus
81
pectoralis major-action
medial rotation and adduction of the arm, extends arm at shoulder from flexed position
82
pectoralis minor-origin
anterior surface of ribs 3-5
83
pectoralis minor insertion
coracoid process of scapula
84
pectoralis minor-action
draws scapula forward and downward, draws rib cage superiorly
85
pronator teres-origin
medial epicondyle of humerus, coronoid process of ulna
86
pronator teres-insertion
by common tendon into lateral radius midshaft
87
pronator teres-action
abducts ulna during forearm pronation
88
rectus abdominus-origin
pubic crest, symphysis
89
rectus abdominus-insertion
typhoid process, costal cartilages of ribs 5-7
90
rectus abdominus-action
flex and rotate lumar vertebrae, fix and depress ribs, stabilize pelvis when walking
91
rectus femoris-origin
anterior inferior iliac spine, superior margin of acetabulum
92
rectus femoris-insertion
patella and tibial tuberosity via patella ligament
93
rectus femoris-action
extends knee, flexes thigh at hip
94
rhomboid major-origin
spinous process of t2-t5
95
rhomboid major-insertion
medial border of scapula
96
rhomboid major -action
retracts scapula, rotates glenoid cavity downward, stabilizes scapula
97
rhomboid minor-origin
spinous process of c7-t1
98
rhomboid minor-insertion
medial border of scapula
99
rhomboid minor-action
retracts scapula, rotates glenoid cavity downward, stabilizes scapula
100
sartoris-origin
anterior superior iliac spine
101
sartorius-insertion
medial aspect of proximal tibia
102
sartorius-action
flexes adbucts and laterally rotates the thigh, flexes knee
103
semimembranosus-origin
ischial tuberosity
104
semimembranosus-insertion
medial condyle of tibia
105
semimembranosus-action
extends thigh and flexes knee, medialy rotates leg
106
semitendinosus-origin
ischial tuberosity
107
semitendinosus-insertion
medial aspect of upper tibial shaft
108
semitendinsus-action
extends thigh and flexes knee, medially rotates leg with semimembranosus
109
serratus anterior-origin
by series of muscle slips from ribs 1-9
110
serratus anterior-inserion
anterior surface of vertebral border of scapula
111
serratus anterior-action
protract and hold scapula against rib cage, rotates scapula, abducts and raise arm and horizontal arm movements
112
soleus-origin
superior tibia, fibula and inerosseous membrane
113
soleus-insertion
posterior calcaneus via calcaneal tendon
114
soleus-action
plantar flexes foot, important locomotor and postural muscle
115
subrascapularis-origin
subscapular fossa of scapula
116
subrascapularis-insertion
lesser tubercle of humerus
117
subrascapularis-action
medial rotator or humerus, holds head of humerus in the glenoid cavity, stabilizes shoulder
118
supraspinatus-origin
supraspinous fossa of scapula
119
supraspinatus-insertion
superior part of the greater tubercle of humerus
120
supraspinatus-action
stabilizes shoulder joint, helps prevent downward dislocation of humerus
121
temporalis-origin
temporal fossa
122
temporalis-insertion
coronoid process of mandible
123
temporalis-action
closes jaw, elevates and retracts mandible, maintains position of mandible at rest
124
tensor fasciae latae-origin
anterior iliac crest and anterior superior iliac spine
125
tensor fasciae latae-insertion
iliotibil tract
126
tensor fasciae latae-action
flexes and abducts thigh, rotates thigh medially, steadies the trunk by pulling iliotibil tract taut(locking knee)
127
teres major-origin
posterior surface of scapula at inferior angle
128
teres major-insertion
intertubercular groove of humerus, tendon fused with tendon of latissimus dorsi
129
teres major-action
posteromedially extends, medially rotates, adducts arm
130
teres minor-origin
lateral border of dorsal scapular surface
131
teres minor-insertion
greater tubercle of humerus, inferior to infraspinatus
132
teres minor-action
posteromedially extends, medially rotates, adducts arm
133
tibialis anterior-origin
lateral condylar and upper 2/3 of tibial shaft, interosseous membrane
134
tibialis anterior-insertion
by tendon into inferior surface of medial cuneiform and 1st metatarsal
135
tibialis anterior-action
mover of dorsiflexion, inverts foot, support medial longitudinal arch
136
tibialis posterior-origin
lateral surface of the posterior tibia, shaft of medial fibula, interosseous membrane
137
tibialis posterior-insertion
medial surface of navicular bones, plantar cuneiforms. bases of metatarsals 2-4
138
tibialis posterior-action
inverts foot, assist in plantar flexion of the foot at the ankle
139
transversus abdominis-origin
inguinal ligament, lumbar fascia, cartilages of last 6 ribs, iliac crest
140
transversus adbominis-insertion
linea alba, pubic crest
141
transversus abdominis-action
compresses abdominal contents
142
trapezius-origin
occipital bone, ligamentum nuchea, spines of c7-t12
143
trapezius-insertion
spine and acromion of scapula, lateral 3rd of clavicle
144
trapezius-action
stabilizes and raises and retracts and rotates scapula, adducts and retracts scapula, elevates scapula, depresses scapula and shoulder
145
triceps brachii-origin
lateral head-posterior shaft of humerus
long head-infaglenoid tubercle of scapula
medial head-posterior humeral shalt distal to radial groove
146
triceps brachii-insertion
by common tendon into olacrenon process of ulna
147
triceps brachii-action
stabilizes shoulder joint ands assist in arm adduction
148
vastus intermedius-origin
anterior and lateral surface of proximal femur
149
vastus intermedius-insertion
patella and tibial tuberosity via patella ligament
150
vastus intermedius-action
extends knee
151
vastus lateralis-origin
greater trochanter, intertrochanteric line, line aspera
152
vastus lateralis-insertion
patella and tibial tuberosity via patella ligament
153
vastus lateralis-action
extends ans stabilizes knee
154
vastus medialis-origin
linea aspera, intertrochanteric line
155
vastus medialis-insertion
patella and tibial tuberosity via patella ligament
156
vastus medialis-action
extends knee, stabilizes patella
