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A and P lab > Skeletal Muscle > Flashcards

Skeletal Muscle Flashcards

1
Q

sternocleidomastoid

A

Origin:
manubrium & medial clavicle

Insertion:
mastoid process of temporal

Action:
flexion and rotation of neck

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2
Q

pectoralis major*

A

Origin:
clavicle, sternum, and costal cartilages

Insertion:
intertubercular sulcus of humerus

Action:
flexes, adducts, and medially rotates shoulder

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3
Q

serratus anterior

A

Origin:
lateral portion of ribs 1-8

Insertion:
medial border of scapula

Action:
protracts and rotates scapula

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4
Q

deltoid*

A

Origin:
spine of scapula, acromion, lateral clavicle

Insertion:
deltoid tuberosity of humerus

Action:
abducts shoulder

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5
Q

external intercostals*

+

A

Origin:
inferior border of rib above

Insertion:
superior border of rib below

Action:
elevate rib cage during inspiration

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6
Q

internal intercostals*

+

A

Origin:
superior border of rib below

Insertion:
inferior border of rib above

Action:
depress rib cage during forced expiration

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7
Q

rectus abdominus*

A

Origin:
pubic crest and symphysis

Insertion:
xiphoid process, cartilage of ribs 5-7

Action:
flexes and rotates vertebral column

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8
Q

external oblique*

A

Origin:
anterior surface of lower 8 ribs

Insertion:
linea alba, pubic crest, iliac crest

Action:
flexion and lateral rotation of trunk

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9
Q

trapezius*

A

Origin:
occipital bone, cervical & thoracic vertebrae

Insertion:
spine & acromion of scapula, acromion

Action:
elevates, rotates, and retracts scapula

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10
Q

latissimus dorsi*

A

Origin:
iliac crest; lumbar vertebrae

Insertion:
intertubercular sulcus of humerus

Action:
extends, adducts, medially rotates shoulder

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11
Q

infraspinatus

A

Origin:
infraspinous fossa of scapula

Insertion:
greater tubercle of humerus

Action:
laterally rotates shoulder

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12
Q

supraspinatus

A

Origin:
supraspinous fossa of scapula

Insertion:
greater tubercle of humerus

Action:
abducts shoulder

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13
Q

teres major*

A

Origin:
inferior angle of scapula

Insertion:
Intertubercular sulcus of humerus

Action:
extends, adducts, medially rotates shoulder

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14
Q

rhomboid major*

A

Origin:
spinous processes of T1-T5

Insertion:
medial border of scapula

Action:
retracts and stabilizes scapula

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15
Q

triceps brachii - long head*

A

Origin:
inferior edge of glenoid cavity of scapula

Insertion:
olecranon process of ulna

Action:
forearm extension

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16
Q

triceps brachii - lateral head*

A

Origin:
posterior proximal humerus

Insertion:
olecranon process of ulna

Action:
forearm extension

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17
Q

biceps brachii - long head*

A

Origin:
superior edge of glenoid cavity of scapula

Insertion:
radial tuberosity

Action:
forearm flexion and supination

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18
Q

biceps brachii - short head*

A

Origin:
coracoid process of scapula

Insertion:
radial tuberosity

Action:
forearm flexion and supination

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19
Q

brachioradialis*

A

Origin:
lateral distal humerus

Insertion:
styloid process of radius

Action:
forearm flexion

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20
Q

brachialis*

A

Origin:
anterior distal humerus

Insertion:
coronoid process of ulna

Action:
forearm flexion

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21
Q

pronator teres*

A

Origin:
medial epicondyle of humerus

Insertion:
middle of radius

Action:
forearm pronation

22
Q

flexor carpi radialis*

A

Origin:
medial epicondyle of humerus

Insertion:
metacarpals II and III

Action:
flexes and abducts wrist

23
Q

palmaris longus*

A

Origin:
medial epicondyle of humerus

Insertion:
palmar aponeurosis

Action:
flexes wrist

24
Q

flexor carpi ulnaris*

A

Origin:
medial epicondyle of humerus

Insertion:
metacarpal V

Action:
flexes and adducts wrist

25
Q

flexor digitorum superficialis*

A

Origin:
medial epicondyle of humerus

Insertion:
phalanges of digits 2-5

Action:
flexes fingers

26
Q

extensor carpi radialis longus*

A

Origin:
lateral epicondyle of humerus

Insertion:
metacarpal II

Action:
extends and abducts wrist

27
Q

extensor carpi radialis brevis*

A

Origin:
lateral epicondyle of humerus

Insertion:
metacarpal III

Action:
extends and abducts wrist

28
Q

extensor digitorum*

A

Origin:
lateral epicondyle of humerus

Insertion:
phalanges of digits 2-5

Action:
extends fingers

29
Q

extensor carpi ulnaris*

A

Origin:
lateral epicondyle of humerus

Insertion:
metacarpal V

Action:
extends and adducts wrist

30
Q

sartorius*

A

Origin:
anterior superior iliac spine

Insertion:
medial proximal tibia

Action:
flexes and laterally rotates hip; flexes knee

31
Q

pectineus*

A

Origin:
superior pubic ramus

Insertion:
posterior proximal femur

Action:
hip adduction & flexion

32
Q

adductor longus*

A

Origin:
pubic symphysis

Insertion:
linea aspera of femur

Action:
hip adduction & flexion

33
Q

gracilis*

A

Origin:
inferior pubic ramus

Insertion:
medial proximal tibia

Action:
hip adduction &flexion

34
Q

rectus femoris*

A

Origin:
anterior inferior iliac spine

Insertion:
tibial tuberosity

Action:
hip flexion, knee extension

35
Q

vastus lateralis*

A

Origin:
greater trochanter of femur

Insertion:
tibial tuberosity

Action:
knee extension

36
Q

vastus medialis*

A

Origin:
intertrochanteric line of femur

Insertion:
tibial tuberosity

Action:
knee extension

37
Q

vastus intermedius*

A

Origin:
anterior proximal femur

Insertion:
tibial tuberosity

Action:
knee extension

38
Q

tensor fascia lata*

A

Origin:
anterior iliac crest

Insertion:
iliotibial tract/band

Action:
stabilizes knee and pelvis

39
Q

gluteus maximus*

A

Origin:
ilium, sacrum, and coccyx

Insertion:
gluteal tuberosity of femur

Action:
hip extension

40
Q

biceps femoris - long head*

A

Origin:
ischial tuberosity

Insertion:
head of fibula

Action:
hip extension and knee flexion

41
Q

biceps femoris - short head*

A

Origin:
linea aspera of femur

Insertion:
head of fibula

Action:
hip extension and knee flexion

42
Q

semitendinosus*

A

Origin:
ischial tuberosity

Insertion:
medial proximal tibia

Action:
hip extension and knee flexion

43
Q

semimemembranosus*

A

Origin:
ischial tuberosity

Insertion:
medial proximal tibia

Action:
hip extension and knee flexion

44
Q

fibularis longus*

A

Origin:
head of fibula

Insertion:
metatarsal I

Action:
everts and plantarflexes foot

45
Q

fibularis brevis*

A

Origin:
lateral distal fibula

Insertion:
metatarsal V

Action:
everts and plantarflexes foot

46
Q

tibialis anterior*

A

Origin:
anterior proximal tibia

Insertion:
metatarsal I

Action:
dorsiflexes foot

47
Q

extensor digitorum longus*

A

Origin:
lateral condyle of tibia

Insertion:
phalanges of toes 2-5

Action:
extends toes

48
Q

gastrocnemius - medial head*

A

Origin:
medial condyle of femur

Insertion:
calcaneus

Action:
plantarflexes foot

49
Q

gastrocnemius - lateral head*

A

Origin:
lateral condyle of femur

Insertion:
calcaneus

Action:
plantarflexes foot

50
Q

soleus*

A

Origin:
proximal tibia and fibula

Insertion:
calcaneus

Action:
plantarflexes foot

A and P lab (4 decks)

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