Muscles Flashcards

(66 cards)

1
Q

Serratus Anterior

A

O: Ribs
I: Ventral scapula
A: Scapular abduction and upward rotation
N: Long thoracic n. (C5-7)

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2
Q

Trapezius

A

O: occiput and C7, T1-T5, T1-T12
I: Posterior lateral 1/3 of clavicle, scap spine
A: Scapular Elevation (upper), adduction/retraction (middle), depression/retraction (lower)
N: Spinal accessory n. (CN XI)

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3
Q

Levator Scapulae

A

O: C1-4
I: medial border of scapula
A: scapular elevation
N: Dorsal scapular nerve

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4
Q

Rhomboid major/minor

A

O: T2-5, C7-T1
I: Medial border of scapula
A: scapular adduction/retraction/downward rotation
N: Dorsal scapular nerve

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5
Q

Latissimus dorsi

A

O: T7, thoracolumbar fascia, iliac crest
I: Intertubercular groove
A: extends, adducts, and IR of humerus, depresses scapula
N: thoracodorsal n

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6
Q

Deltoid

A

O: clavicle, spine of scapula, acromion
I: deltoid tuberosity on humerus
A: Shoulder flx/horiz add (ant), shoulder extension and horizontal abd (post), shoulder abduction (middle)
N: Axillary n

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7
Q

Coracobrachialis

A

O: coracoid process of scap
I: Middle 1/3 of humerus
A: shoulder flx
N: Musculocutaneous n.

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8
Q

Supraspinatus

A

O: scapula
I: greater tubercle of humerus
A: shoulder abduction (15 degrees)
N: Suprascapular n.

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9
Q

Pec major

A

O: clavicle, sternum, and ribs
I: lateral lip of inter tubercular groove (humerus)
A: horizontal adduction and IR of humerus
N: lateral and medial pectoral n.

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10
Q

Subscapularis

A

O: Subscapular fossa on scapula
I: lesser tubercle of humerus
A: IR of humerus
N: subscapular nerve (upper and lower)

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11
Q

Infraspinatus

A

O: scapula
I: greater tubercle of humerus
A: ER of shoulder
N: suprascapular nerve

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12
Q

Teres Minor

A

O: lateral border of scapula
I: greater tubercle of humerus
A: ER of shoulder
N: axillary nerve

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13
Q

Teres major

A

O: inferior angle of scap
I: Intertubercle groove medially on humerus
A: IR and adduction of shoulder
N: lower sub scapular nerve

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14
Q

Biceps brachii

A

O: supraglenoid tubercle (long head), coracoid process (short head)
I: radial tuberosity
A: elbow flexion, forearm supination
N: musculocutaneous

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15
Q

Brachialis

A

O: distal 1/2 of humerus
I: coronoid process and ulnar tuberosity
A: elbow flexion
N: musculocutaneous

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16
Q

Coracobrachialis

A

O: coracoid process
I: mid 1/3 of humerus
A: flexes shoulder
N: musculocutaenous

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17
Q

Triceps brachii

A

O: Infraglenoid tubercle of scapula (long head) and the humerus (lateral/short heads)
I: olecranon process of ulna
A: extension of elbow and shoulder
N: radial n.

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18
Q

Anconeus

A

O: lateral epicondyle
I: olecranon of ulna
A: extension of forearm
N: radial n.

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19
Q

Pec minor

A

O: coracoid
I: ribs 3-5
A: elevates ribs, stretches arm forward
N: medial pectoral nerve

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20
Q

Pronator teres

A

O: medial epicondyle
I: lateral radius
A: pronation
N: median n

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21
Q

Flexor carpi radialis

A

O: medial epicondyle
I: 2nd MCP
A: flex elbow, wrist
N: median n

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22
Q

palmaris longus

A

O: medial epicondyle
I: flexor retinaculum
A: flex elbow, wrist
N: median n

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23
Q

flexor carpi ulnaris

A

O: medial epicondyle
I: pisiform
A: flex elbow and wrist
N: ulnar

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24
Q

flexor digitorum superficialis

A

O: medial epicondyle and radial head
I: mid phalanges
A: flex PIP, MCP, wrist
N: median

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25
Flexor digitorum profundus
O: proximal 3/4 of ulna I: distal phalanges A: flex DIP, PIP, MCP, wrist N: 2/3 median, 4/5 ulnar
26
flexor pollicis longus
O: radius and interosseus membrane I: base of distal phalanx of thumb A: flex IP joint of thumb, MCP, CMC and wrist N: median
27
pronator quadratus
O: distal 1/4 of ulna I: distal 1/4 of radius A: pronate forearm N: median n
28
Brachioradialis
O: supraepicondylar ridge of humerus I: lateral radius A: flexes elbow N: radial nerve
29
Extensor carpi radialis longus
O: supraepicondylar ridge I: base of 2nd MCP A: extend, abduct, adduct wrist N: radial
30
extensor carpi radialis brevis
O: lateral epicondyle I: base of 3rd MCP A: extend, abduct, adduct wrist N: radial n
31
Extensor digitorum/extensor digiti minimi
O: lateral epicondyle I: extensor expansion A: extend digits N: radial n
32
extensor carpi ulnaris
O: lateral epicondyle I: base of 5th MCP A: extend, abduct, or adduct wrist N: radial n.
33
Supinator
O: lateral epidcondyle I: lateral radius A: supinates forearm N: posterior interosseus n.
34
abductor pollicis longus
O: posterior surface or ulna, radius I: base of 1st MCP A: extend/abduct 1st digit N: PIN
35
extensor pollicis brevis/longus
O: posterior radius I: PIP (brevis), DIP (Longus) A: extend/abduct 1st digit N: PIN
36
Extensor indices
O: posterior ulna I: 2nd extensor expansion A: extend medial 4 digits N: PIN
37
Dorsal interossei vs. palmar interossei action
DAB -- dorsal abduct digits | PAD -- palmar adduct digits
38
Iliacus and psoas major
O: Iliac crest, and T12-L5 I: lesser trochanter of femur A: hip flexion N: L2-l4, and femoral n.
39
Sartorius
O: ASIS I: medial tibia (pes anserinus) A: flex, abd, and ER of thigh w/ knee flx N: femoral n.
40
Gluteus maximus
O: Ilium, iliac crest, sacrum ,coccyx I: femur and IT band A: hip extension, a little ER N: inferior gluteal nerve
41
Semitendinosus and semimembranosus
O: ischial tuberosity I: medial tibia (tend -- pes anserinus) A: extends thigh, flexes leg N: sciatic nerve
42
Biceps femoris
O: ischial tuberosity (long head), and linea aspera of femur (short head) I: fibular head A: extends hip, flexes and ER of leg N: sciatic nerve
43
Gluteus medius
O: lateral ilium I: greater trochanter of femur A: abducts and IR of thigh, steadies pelvis when opposite leg is raised N: superior gluteal n
44
gluteus minimus
O: lateral ilium I: anterior greater trochanter of femur A: abducts and IR of thigh N: superior gluteal n
45
TFL
O: ASIS, iliac crest I: IT tract that attaches to lateral tibia A: hip abd w/ flexed hip N: superior gluteal n
46
pectineus
O: superior ramus of pubis I: pectineal line of femur A: adductor, flx, IR of thigh N: femoral and obturator n
47
Adductor longus, brevis, magnus (adductor part)
O: pubic ramus I: linea aspera A: adduction (and flex) of thigh N: obturator n.
48
Adductor magnus hamstring part
O: ischial tuberosity I: tubercle A: extends thigh N: sciatic n.
49
Gracilis
O: pubic ramus I: pes anserinus (medial tibia) A: adduction, flx, IR of thigh N: obturator n.
50
Obturator externus
O: obturator foramen I: trochanteric fossa of femur A: ER of hip N: obturator n
51
Obturator internus
O: pubis, ischium I: medial side of greater trochanter A: ER, abd of flexed thigh N: obturator n
52
Quadratus femorus
O: ischial tuberosity I: femur A: ER of thigh N: nerve to quadratus femoris
53
Gemellus superior
O: ischial spine I: medial greater trochanter of femur A: ER of thigh N: nerve to obturator internus
54
Gemellus inferior
O: ischial tuberosity I: medial greater trochanter of femur A: ER of hip N: nerve to quadratus femoris
55
Piriformis
O: sacrum I: greater trochanter of femur A: ER of thigh, abd of thigh w/ flexed hip N: ventral root rami L5,S1,S2
56
Popliteus
O: lateral condyle of femur I: posterior tibia A: unlocks knee by rotating femur on fixed tibia N: tibial n
57
Quadriceps femoris -- rectus femoris, vastus lateralis, vastus medialis longus, vastus medialis oblique, vastus intermedius
O: RF- AIIS, VL- greater trochanter, VM- linea aspera, VI- femur I: aponeurosis to patella, to tibia, to tibial tuberosity via quardiceps tendon A: knee extension, and hip flx (RF) N: femoral n.
58
Gastrocnemius
O: lateral condyle of femur (lat head), medial condyle of femur (medial head) I: calcaneus via achilles tendon A: PF, some knee flex N: tibial n
59
Soleus
O: Fibular head and shaft I: posterior calcaneus via calcaneal tendon A: PF N: tibial n
60
Plantaris
O: lateral epicondyle of femur I: calcaneal tuberosity via achilles tendon A: PF N: tibial n
61
Tibialis posterior
O: posterior tibia I: navicular, cuneiforms, cuboid, 2nd-4th MTT A: PF and inversion N: tibial
62
Flexor digitorum longus
O: medial tibia I: plantar base of distal phalanges of lateral 4 digits A: flexes lateral 4 digits, PF foot N: tibial n
63
Flexor hallucis longus
O: distal 2/3 of fibula I: base of distal phalanx of big toe A: flexes toe joints N: tibial n
64
Tibialis anterior
O: lateral tibial condyle I: medial cuneiform and base of first MT A: DF and inversion N: deep fibular n.
65
Extensor digitorum longus, extensor hallucis longus
O: head of fibula, lateral tibial condyle I: dorsal aponeuroses of distal phalanges A: DF, eversion, extension of MTP, IP N: deep fibular
66
Peroneus longus and brevis
O: head of fibula (long), lateral fibula (short) I: medial cuneiform and base of 1st MT (long), base of 5th MT (short) A: eversion and PF N: superficial fibular/peroneal nerve