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Muscles - muscle action (medium hard) Flashcards

1
Q

What is the innervation of this muscle?

A

Muscle - adductor brevis

Primary - adducts hip

Secondary

Medially (externally) rotates thigh

Flexes hip

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2
Q

What joints does this muscle act on?

A

Muscle - Teres major

Extends, medially rotates and adducts arm at shoulder

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3
Q

What joints does this muscle act on?

A

Muscle - abductor pollicis brevis

Abducts thumb at both carpometacarpal joint and metacarpophalangeal joint

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4
Q

What joints does this muscle act on?

A

Muscle - Inferior gemellus

Laterally (externally) rotates hip

Abduct flexed thigh (secondary)

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5
Q

What joints does this muscle act on?

A

Muscle - Pectoralis minor

Depresses scapula, protracts scapula

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6
Q

What joints does this muscle act on?

A

Muscle - Palmaris longus

Flexes wrist

Weakly flexes elbow

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7
Q

What joints does this muscle act on?

A

Muscle - Tensor fascia lata

Flexes and abducts hip

Rotates medially hip

(Tenses iliotibial tract)

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8
Q

What joints does this muscle act on?

A

Muscle - Pectoralis major

Protracts scapula

Flexes, medially rotates and adducts arm/shoulder

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9
Q

What joints does this muscle act on?

A

Muscle - Extensor digiti minimi

Extension at all little finger joints

Metacarpophalangeal + interphalangeal

Weak extensor of wrist

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10
Q

What joints does this muscle act on?

A

Muscle - Pronator teres

Pronates forearm at radioulnar joints

Weakly flexes elbow

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11
Q

What joints does this muscle act on?

A

Muscle - Dorsal interossei

Primary

Abduct digits 2-4

Secondary

Assist lumbircals in extension of interphalngeal joints

Flex at metacarpophalngeal joints

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12
Q

What joints does this muscle act on?

A

Muscle - Lateral 2 lumbircals

Flexion @ metacarpophalangeal joint

Extension @ interphalangeal joints

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13
Q

What joints does this muscle act on?

A

Muscle - Medial head triceps

Extends elbow

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14
Q

What joints does this muscle act on?

A

Muscle - Flexor hallucis brevis

Flexes at metatarsophalangeal joint

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15
Q

What joints does this muscle act on?

A

Muscle - Psoas major

Lateral flexion at vertebral column

Thigh flexion (hip)

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16
Q

What joints does this muscle act on?

A

Muscle - Levator scapulae

Elevates scapula

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17
Q

What joints does this muscle act on?

A

Muscle - Infraspinatous

Externally rotates arm @ shoulder

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18
Q

What joints does this muscle act on?

A

Muscle - Extensor pollicus longus

Extends thumb at interphalangeal joints + metacarpophalangeal + carpometacarpal joints

Extends wrist

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19
Q

What joints does this muscle act on?

A

Muscle - Subscapularis

Internally rotates arm at shoulder

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20
Q

What joints does this muscle act on?

A

Muscle - Supraspinatous

Abducts arm at shoulder - initiates the movement

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21
Q

What joints does this muscle act on?

A

Muscles - Lumbricals

Flexes toes at metatarsophalangeal joint

Extend at interphalangeal joints

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22
Q

What joints does this muscle act on?

A

Muscle - Supinator

Supinates forearm at radioulnar joints

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23
Q

What joints does this muscle act on?

A

Muscle - Obturator internus

externally rotates hip

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24
Q

What joints does flexor digitorum profundus act on?

A

Primary

proximal interphalangeal 2-5 - flexion

Secondary:

Wrist - Flexion

Metacarpal-phalangeal - flexion

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25
What joints does this muscle act on?
Muscle - Quadratus plantae Flexes digits 2-5 of feet
26
What joints does this muscle act on?
Muscle - Extensor carpi ulnaris Extends wrist (with extensor carpi radialis) Adducts wrist with flexor carpi ulnaris
27
What joints does this muscle act on?
Muscle - Tibialis posterior Plantarflexes foot at ankle Inverts foot at subtalar joint
28
What joints does this muscle act on?
Muscle - Latissimus dorsi Shoulder extension + adduction + internal rotation of arm Secondary - rotation of trunk
29
What is the action of this muscle?
Muscle - Popliteus Flexes + medially rotates leg to unlock knee in flexion
30
What joints does this muscle act on?
Muscle - Coracobrachialis Shoulder flexion + adduction
31
What joints does this muscle act on?
Muscle - Fibularis tertius Dorsiflexion of foot at ankle Eversion at subtalar joint
32
What joints does this muscle act on?
Muscle - Deltoid Together - adducts arm @ shoulder Anterior - flex arm @ shoulder + medial rotation Posterior - extend arm @ shoulder + lateral rotation
33
What joints does this muscle act on?
Muscle - Lateral head of triceps Elbow extension
34
What joints does this muscle act on?
Muscle - Rectus femoris As part of quadriceps extends knee Only quadricep to cross hip. Flexes hip
35
What joints does this muscle act on?
Muscle - Extensor hallicus brevis Extends big toe at metatarsophalangeal joint
36
What joints does this muscle act on?
Muscle - Rhomboid minor Elevates, rotates + retracts scapula
37
What joints does this muscle act on?
Muscle - Superior gemellus externally rotates hip Abducts hip
38
What joints does this muscle act on?
Muscle - Flexor carpi ulnaris Flexes wrist Adducts hand
39
What joints does this muscle act on?
Muscle - Flexor digiti minimi brevis Flexes metacarpophalangeal and interphalangeal joints of little finger
40
What joints does this muscle act on?
Muscles - Medial 2 lumbricals Flexion @ metacarpophalangeal joint Extension @ interphalangeal joints
41
What joints does this muscle act on?
Muscle - Gastronemius Plantar flexes ankle Secondary - Flexes knee
42
What joints does this muscle act on?
Muscles - Plantar interossei Flexes + adducts digits 3-5
43
What joints does this muscle act on?
Muscle - Extensor hallicus longus Extends big toe at metatarsophalangeal joint, interphalangeal joints Dorsiflexes ankle
44
What joints does this muscle act on?
Muscle - Quadraceps: Vastus medialis Extends knee
45
What joints does this muscle act on?​
Muscle - Flexor digitorum superficialis Flexes interphalangeal + metacarpophalangeal joints 2-5 Flexes wrist Weakly flexes elbow
46
What joints does this muscle act on?
Muscle - Piriformis Externally rotates + abducts hip
47
What joints does this muscle act on?
Muscle - Flexor carpi radialis Flexes wrist Abducts hand
48
What joints does this muscle act on?
Muscle - Long head of triceps Extends elbow
49
What joints does this muscle act on?
Muscle - Opponens pollicus Opposes thumb
50
What joints does this muscle act on?
Muscle - Pectineus Adducts, flexes and medially rotates thigh @ shoulder
51
What joints does this muscle act on?
Muscle - Biceps femoris Primary Flexes + laterally (externally) rotates knee Secondary - extends hip
52
What joints does this muscle act on?
Muscle - Opponens digiti minimi Brings little finger toward thumb Flexes + laterally rotates figner
53
What joints does this muscle act on?
Muscle - Fibularis brevis Plantar flexes foot (ankle) Everts foot at subtalar joint
54
What joints does this muscle act on?
Muscle - Brachioradialis Flexes elbow (best when partially pronated)
55
What joints does this muscle act on?
Muscle - Iliacus Prime flexor of hip Medially rotates hip
56
What joints does this muscle act on?
Muscle - Rhomboid major Elevates scapula Rotates scapula Retracs scapula
57
What joints does this muscle act on?
Muscle - adductor longus Primary - adducts hip Secondary Externally (medially) rotates
58
What joints does this muscle act on?
Muscle abductor hallucis Abducts big toe
59
What joints does this muscle act on?
Muscle - Plantaris Assists in knee flexion Assists in plantar flexion of foot
60
What joints does this muscle act on?
Muscle - Tibialis anterior Dorsiflexes foot at ankle Inverts foot at subtalar joint
61
What joints does this muscle act on?
Muscle - Biceps brachii Primary Elbow flexion Supination Secondary Flexes shoulder
62
What joints does this muscle act on?
Muscle: Hamstrings - semimembranosis Extends thigh Flexes knee
63
What joints does this muscle act on?
Muscle - Extensor carpi radialis longus Extends wrist with extensor carpi ulnaris Abducts wrist with flexor carpi radialis
64
What joints does this muscle act on?
Muscle - Gluteus medius Abducts and medially rotates hip
65
What joints does this muscle act on?
Muscle - adductor magnus Primary - adducts hip Secondary - externally rotates + extends hip
66
What joints does this muscle act on? ## Footnote ![]()
Muscle - Extensor digitorum Primary Extends interphalangeal joints 2-5 Secondary Extends wrist Extends metacarpophalangeal joints 2-5
67
What joints does this muscle act on?
Muscle - Sartorius Flexes, abducts and laterally rotates hip Flexes knee
68
What joints does this muscle act on?
Muscle - Abductor digiti minimi Abducts little finger at metacarpophalngeal joint
69
What joints does this muscle act on?
Muscle - Quadratus femoris Externally rotates + adducts hip
70
What joints does this muscle act on?
Muscle - Serratus anterior Elevates ribs Laterally rotates scapula
71
What joints does this muscle act on?
Muscle - Gluteus minimus Abducts and medially (internally) rotates hip
72
What is the innervation of this muscle?
Muscle - Flexor digitorum longus Plantar flexes ankle Flexes all joints of digits 2-5 Inverts subtalar joint
73
What joints does this muscle act on?
Muscle - Soleus Plantar flexes foot
74
What joints does this muscle act on?
Flexor hallucis longus Flexes interphalangeal + metatarsophalangeal joints of toe Plantar flexes ankle Inverts at subtalar joint
75
What joints does this muscle act on?
Muscle - Extensor carpi radialis brevis Wrist - extends + abducts
76
What joints does this muscle act on?
Muscle - Obturator externus Laterally rotates hip Adducts hip
77
What joints does this muscle act on?
Muscle - Extensor digitorum brevis Extends toes 2-5
78
What joints does this muscle act on?
Muscle - Quadraceps: Vastus lateralis Extend knee
79
What joints does this muscle act on?
Muscle - Brachialis Flexes elbow
80
What joints does this muscle act on?
Muscle - abductor pollicis longus Primary - Abducts + extends thumb at carpometacarpal joint Secondary - Flex + abduct wrist
81
What joints does this muscle act on?
Muscle - Flexor pollicus longus Flexes carpometacarpal joint of thumb Flexes interphalangeal + metacarpophalangeal joint of thumb Flexes + abducts wrist
82
What joints does this muscle act on?
Muscle - Extensor digitorum longus Extends toes 2-5 Extends foot at ankle (dorsiflexion)
83
What joints does this muscle act on?
Muscle - abductor digiti minimi Abducts + flexes little toe (Also supports lateral longitudinal arch)
84
What joints does this muscle act on?
Muscle - Trapezius Superior fibres - elevate shapula (shrugging) Extend head Middle fibres - Retract (adduct) scapula Inferior fibres - depress scapula
85
What joints does this muscle act on?
Muscle - Pronator quadratus Pronates forearm at radioulnar joints
86
What joints does this muscle act on?
Muscle - Adductor pollicus Primary - adducts thumb at carpometacarpal joint Secondary - flexes thumb at metacarpophalangeal joint
87
What joints does this muscle act on?
Muscle - Flexor pollicus brevis Flexes carpometacarpal + metacarpophalangeal joints of thumb
88
What joints does this muscle act on?
Muscle - Extensor pollicus brevis Extends thumb at carpometacarpal joint Extends thumb at metacarpophalangeal joint Abducts wrist
89
What joints does this muscle act on?
Muscle - Teres minor Externally rotates shoulder Weakly adducts arm
90
What joints does this muscle act on?
Muscle - Gracilis Adducts hip Flexes knee Medially rotates knee when flexed
91
What joints does this muscle act on?
Muscle - adductor hallucis Adducts + flexes metatarsophalngeal joint of big toe
92
What joints does this muscle act on?
Muscle - Fibularis longus Everts at subtalar joint Plantar flexes at ankle joint
93
What joints does this muscle act on?
Muscle - Flexor digitorum brevis Flexes digits 2-5 on foot - proximal interphalangeal + metacarpophalangeal joints
94
What joints does this muscle act on?
Muscle - Hamsrings: Semitendinosis Extends hip Flexes knee
95
What joints does this muscle act on?
Muscle - Gluteus maximus Major extensor of thigh (hip) Externally rotates and abducts hip

-Anatomy (34 decks)

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