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Anatomy Lab > Actions, origins, insertions > Flashcards

Actions, origins, insertions Flashcards

1
Q

Sternocleidomastoid

A

action: flexes and laterally rotates head
origin: manubrium of sternum and medial clavicle
insertion: mastoid process

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2
Q

Scalenes - anterior, middle, posterior

A

action: elevates first two ribs for inspiration

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3
Q

Levator scapulae

A

action: elevates scapula

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4
Q

Zygomaticus minor

A

action: major and minor combine to raise lateral corners of mouth

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5
Q

Masseter

A

actions: elevates mandible

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6
Q

Temporalis

A

actions: elevates mandible

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7
Q

Splenius wapitis

A

action: extends/hyperextends neck

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8
Q

Trapezius

A

actions: extends and laterally flexes head

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9
Q

Latissimus dorsi.

A

action: arm extension, arm adduction, medially rotates arm

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10
Q

Rhomboideus minor

A

action: major and minor combine to retract and fixate scapula

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11
Q

Erector spinae

A

action: extends vertebrae

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12
Q

Pectoralis major

A

actions: flexes and medially rotates arm

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13
Q

External intercostals

A

action: elevate rib cage during inspiration

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14
Q

Internal intercostals

A

actions: depress rib cage during forced expiration

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15
Q

Rectus abdominis

A

actions: flexes vertebrae and compresses abdomen

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16
Q

Supraspinatus

A

action: abducts arm
origin: supraspinous fossa of scapula
insertion: greater tubercle of humerus

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17
Q

Infraspinatus

A

actions: laterally rotates arm
origin: infraspinous fossa of scapula
insertion: greater tubercle of humerus

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18
Q

Teres minor

A

action: laterally rotates arm
origin: lateral border of scapula
insertion: greater tubercle of humerus

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19
Q

Subscapularis

A

action: medially rotates arm
origin: sub scapular fossa of scapula
insertion: lesser tubercle of humerus

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20
Q

triceps brachii

A

action: extends forearm
origin: scapula and humerus
insertion: olecranon process

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21
Q

biceps brachii

A

action: flexes and supinates forearm
origin: coracoids process of scapula and humerus
insertion: radial tuberosity

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22
Q

brachialis

A

action: flexes forearm

23
Q

coracobrachialis

A

action: flexes and adducts the arm
origin: coracoid process of scapula
insertion: shaft of humerus

24
Q

printer teres

A

action: pronates forearm
origin: medial epicondyle of humerus
insertion: radius shaft

25
Q

flexor carpi radialis

A

action: flexes and abducts wrist
origin: medial epicondyle of humerus
insertion: metacarpals 2-3

26
Q

palmaris longus

A

action: flexes wrist
origin: medial epicondyle of humerus
insertion: fascia of palm

27
Q

flexor carpi ulnaris

A

action: flexes and adductions wrist
origin: medial epicondyle of humerus
insertion: metacarpal 5

28
Q

flexor digitorum superficialis

A

action: flexes wrist and fingers
origin: medial epicondyle of humerus
insertion: middle phalanges

29
Q

flexor pollicis longus

A

action: flexes thumb

30
Q

flexor digitorum profundus

A

action: flexes fingers

31
Q

brachioradialis

A

action: flexes forearm

32
Q

extensor carpi radialis longs and brevis

A

action: extends and abducts wrist
origin: lateral epicondyle of humerus
insertion: metacarpal 3

33
Q

extensor digitorum

A

action: extends wrist and fingers
origin: lateral epicondyle of humerus
insertion: distal phalanges

34
Q

extensor digiti minimi

A

action: extends wrist and little finger

35
Q

extensor carpi ulnaris

A

action: extends and adducts wrist
origin: lateral epicondyle of humerus
insertion: metacarpal 5

36
Q

supinator

A

action: supinates forearm
origin: lateral epicondyle of humerus
insertion: radius shaft

37
Q

abductor pollicis longus

A

action: abducts and extends thumb

38
Q

extensor pollicis brevis

A

action: extends thumb

39
Q

illiopsoas

A

action: flexes thigh

40
Q

sartorius

A

action: flexes, abducts and laterally rotates thigh, flexes and medially rotates leg
origin: anterior superior iliac spine
insertion: medial tibia

41
Q

Quadriceps group

A

action: flexes thigh and extends leg

42
Q

Rectus femoris

A

origin: anterior inferior iliac spine
insertion: tibial tuberosity via patellar ligament

43
Q

adductor group

A

action: adducts and medially rotates thigh

44
Q

gluteus maximus

A

action: extends and laterally rotates thigh

45
Q

piriformis

A

action: laterally rotates extended thigh; abducts flexed thigh

46
Q

hamstrings group

A

action: extends thigh and flexes leg

47
Q

tibialis anterior

A

action: dorsiflexes and inverts foot

48
Q

extensor digitorum

A

action: extends toes

49
Q

gastrocnemius

A

action: plantar flexes foot
origin: medial and lateral condyles of femur
insertion: calcaneus via achilles tendon

50
Q

plantaris

A

action: plantar flexes foot

51
Q

soleus

A

action: plantar flexes foot

52
Q

flexor digitorum longus

A

action: flexes toes

53
Q

flexor hallucis longus

A

action: flexes big toe

Anatomy Lab (3 decks)

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