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Bio 201 Lab > Appendicular Muscles > Flashcards

Appendicular Muscles Flashcards

1
Q

Rhomboideus minor

A

Retracts scapula and braces shoulder. Fixes scapula during arm movements

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2
Q

Rhomboideus major

A

Retracts scapula and braces shoulder. Fixes scapula during arm movements

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3
Q

Levator scapulae

A

Elevates scapula if cervical vertebrae are fixed. Flexes neck laterally if scapula is fixed

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4
Q

Trapezius

A

Stabilizes scapula and shoulder during arm movements. Elevates and depresses shoulder. Rotates and retracts scapula

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5
Q

Serratus anterior

A

Prime mover in forward reaching actions. Protracts and fixes scapula

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6
Q

Pectoralis minor (O/I)

A

Origin is ribs 3-5. Insertion is coracoid process of scapula. It protracts scapula and depresses apex of shoulder

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7
Q

Coracobrachialis (O/I)

A

Origin is coracoid process of scapula. Insertion is medial aspect of humeral shaft. Flexes arm and shoulder adduction

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8
Q

Brachialis (O/I)

A

Origin is anterior surface of distal half of humerus. Insertion is Coronoid process and tuberosity of ulna. Prime mover of elbow flexion

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9
Q

Biceps brachii (O/I)

A

Origin is coracoid process of scapula (short head). Insertion is tuberosity of radius. Synergist of elbow flexion, rapid/forceful supination of forearm, and support glenohumeral joint.

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10
Q

Triceps brachii (Insertion)

A

Insertion is olecranon. Extends elbow, extends and adducts humerus

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11
Q

Supraspinatus (O/I)

A

Origin is supraspinous fossa of scapula. Insertion is greater tubercle of humerus. Aids deltoid in abduction of arm and supports humeral head when carrying weight

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12
Q

Infraspinatus (O/I)

A

Origin is infraspinous fossa of scapula. Insertion is greater tubercle of humerus. Modulates deltoid, prevents humeral head from sliding upward, and rotates humerus laterally

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13
Q

Teres minor (O/I)

A

Origin is lateral border of scapula. Insertion is greater tubercle of humerus. Modulates deltoid, prevents humeral head from sliding upward during abduction, and rotates humerus laterally

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14
Q

Subscapularis (O/I)

A

Origin is subscapular fossa of scapula. Insertion is lesser tubercle of humerus. Modulates deltoid, prevents humeral head from sliding upward during abduction, and rotates humerus medially

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15
Q

Deltoid (O/I)

A

Origin is acromion and spine of scapula. Insertion is deltoid tuberosity of humerus. Anterior fibers flex and medially rotate arm, lateral fibers abduct arm, and posterior fibers extend and laterally rotate arm.

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16
Q

Pectoralis major (Insertion)

A

Insertion is intertubercular sulcus of humerus. Flexes and adducts arm, medially rotates humerus

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17
Q

Latissimus dorsi

A

Adducts arm, medially rotates humerus, and helps move arm posteriorly

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18
Q

Teres major

A

Extends arm and medially rotates humerus

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19
Q

Pronator teres

A

Assists pronator quadratus in pronation only in rapid/forceful action. Weakly flexes elbow

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20
Q

Flexor carpi radialis

A

Flexes wrist anteriorly on radial side

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21
Q

Palmaris longus

A

Anchors skin and fascia of palmar region

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22
Q

Flexor carpi ulnaris

A

Flexes wrist anteriorly on ulnar side

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23
Q

Flexor digitorum superficialis

A

Flexes wrist, metacarpophalangeal, and proximal interphalangeal joints

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24
Q

Brachioradialis

A

Flexes elbow

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25
Q

Extensor carpi radialis longus

A

Extends wrist and aids in radial flexion of wrist

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26
Q

Extensor carpi radialis brevis

A

Extends wrist

27
Q

Extensor digitorum

A

Extends wrist, metacarpophalangeal, and interphalangeal joints

28
Q

Extensor carpi ulnaris

A

Extends wrist and fixes wrist when fist is clenched or hand grips

29
Q

Supinator

A

Supinates forearm

30
Q

Anconeus

A

Helps extend elbow

31
Q

Gluteus minimus

A

Abduct thigh, medial and lateral rotation of hip, helps shift the weight of the trunk

32
Q

Gluteus medius

A

Abduct thigh, medially rotate thigh, helps shift weight of trunk

33
Q

Gluteus Maximus

A

Extends thigh at hip, abducts thigh, helps stabilize femur on tibia

34
Q

Piriformis

A

Rotation and abduction of femur

35
Q

Tensor fasciae latae

A

Extends knee and laterally rotates tibia

36
Q

Pectineus

A

Flexes and adducts thigh

37
Q

Adductor brevis

A

Adducts thigh

38
Q

Adductor longus

A

Adducts and medially rotates thigh. Flexes thigh at hip

39
Q

Adductor magnus

A

Adducts and medially rotates thigh. Extends thigh at hip

40
Q

Gracilis

A

Flexes knee and medially rotates tibia at knee

41
Q

Biceps femoris (O/I)

A

Origin is ischial tuberosity. Insertion is head of fibula. Flexes knee and extends hip

42
Q

Semimembranosus (O/I)

A

Origin is ischial tuberosity. Insertion is medial condyle of tibia. Flexes knee and extension of thigh

43
Q

Semitendinosus (O/I)

A

Origin is ischial tuberosity. Insertion is medial surface of upper tibia. Flexes knee and extension of thigh

44
Q

Tibialis anterior (O/I)

A

Origin is lateral condyle of proximal half of tibia. Insertion is median cuneiform and metatarsal I. Dorsiflexes foot, inverts foot, and resists backward tipping of body

45
Q

Extensor digitorum longus

A

Extends toes and dorsiflexes foot

46
Q

Extensor hallucis longus

A

Extends hallux and dorsiflexes foot

47
Q

Soleus (O/I)

A

Origin is posterior surface of head of fibula and proximal 1/4 of tibia. Insertion is calcaneus. Plantar flexes foot and steadies leg on ankle when standing

48
Q

Gastrocnemius (O/I)

A

Origin is condyles, popliteal surface, and lateral supracondylar line of femur. Insertion is calcaneus. Plantarflexes foot and flexes knee

49
Q

Iliopsoas

A

Flexion of thigh made up of psoas major and iliacus

50
Q

Psoas major

A

Flexion of thigh/hip, lateral rotation of thigh, lateral flexion of trunk

51
Q

Iliacus

A

Flexion of thigh/hip and lateral rotation of thigh

52
Q

Vastus intermedius (O/I)

A

Origin is anterior and lateral surfaces of femoral shaft. Insertion is patella, tibial tuberosity, and condyles of tibia. Extends knee

53
Q

Vastus lateralis (O/I)

A

Origin is femur at greater trochanter, gluteal tuberosity, and linea aspera. Insertion is patella, tibial tuberosity, and condyles of tibia. Extends knee and aids in fixing patella during knee movements

54
Q

Vastus medialis (O/I)

A

Origin is femur at spiral line. Insertion is patella, tibial tuberosity, and condyles of tibia. Extends knee and aids in fixing patella during knee movements

55
Q

Rectus femoris (O/I)

A

Origin is ilium and superior margin of acetabulum. Insertion is patella, tibial tuberosity, and condyles of tibia. Extends knee and flexes thigh at hip

56
Q

Sartorius (O/I)

A

Origin is anterior superior iliac spine. Insertion is medial surface of proximal end of tibia. Aids in knee flexion, hip flexion, abducts and laterally rotates thigh

57
Q

Fibularis (peroneus) longus

A

Everts and plantarflexes foot

58
Q

Fibularis (peroneus) brevis

A

Everts and plantarflexes foot

59
Q

Flexor digitorum profundus

A

Flexes wrist, metacarpophalangeal, and interphalangeal joints

60
Q

Flexor pollicis longus

A

Flexes phalanges of pollex

61
Q

Pronator quadratus

A

Prime mover of forearm pronation, resists separation of radius and ulna

62
Q

Abductor pollicis longus

A

Abducts pollex in frontal plane and extends pollex at carpometacarpal joint

63
Q

Extensor pollicis longus

A

Extends distal phalanx I and aids in extending proximal phalanx I and metacarpal I

64
Q

Extensor pollicis brevis

A

Extends metacarpal I and proximal phalanx of pollex

Bio 201 Lab (10 decks)

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