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Muscles Flashcards

1
Q

Sartorius

A

O: ASIS
I: Pes anserine tendon (proximal anterior medial surface of tibia)
K: 1. Flexion of thigh @ acetabulofemoral joint.
2. Abduction of thigh @ acetabulofemoral joint.
3. Lateral rotation of thigh @ acetabulofemoral joint.
4. Flexion of leg @ knee joint.
5. Medial rotation of leg @ knee joint.

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2
Q

Adductor Magnus

A

O: Inferior ishiopubic ramus of ischium and pubis
Ischial tuberosity of ischium
I: Gluteal tuberosity of femur.
– Linea aspera of femur.
– Adductor tubercle of femur.
– Medial supracondylar line of femur.
K: 1. Adduction of thigh @ acetabulofemoral joint.
2. Extension of thigh @ acetabulofemoral joint.

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3
Q

Middle traps

A

O: Spinous processes of T1-T5
I: Acromion process of the scapula
– Spine of the scapula
K: Retracts scapula @ scapulocostal joint

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4
Q

Opponens pollicis

A

O: Tubercle of trapezium
Flexor retinaculum
I: Lateral side of 1st metacarpal
K: Opposition of thumb @ carpometacarpal joint

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5
Q

Supinator

A

O: Lateral epicondyle of the humerus
Supinator crest of the ulna
I: Proximal 1/3 of posterior, lateral & anterior surface of the radius
K: Supinates forearm @ radioulnar joints

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6
Q

EDL

A

O: Proximal 2/3 of fibula.
–Proximal 1/3 of interosseous membrane.
–Lateral condyle of tibia.
I: Bases of middle & distal phalanges of toes 2 – 5 (via dorsal digital expansion)
K: Extension of toes 2 – 5 @ metatarsophalangeal & interphalangeal joints.
Dorsiflexion of foot @ ankle joint.

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7
Q

SCM

A

O: Medial 1/3 of the clavicle (Clavicular head)
Manubrium of the sternum (Sternal head)
I: Mastoid process of temporal bone.
–Lateral 1⁄2 of superior nuchal line.
K: Extends head @ atlanto-occipital joint.
–Flexes neck @ spinal joints.
–Lateral flexion of head & neck @ spinal joints.
–Contralateral rotation of head & neck @ spinal joints.

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8
Q

Adductor longus

A

O: Anterior body of pubis
I: Middle 1/3 of medial lip of linea aspera of femur
K: Flexion of thigh @ acetabulofemoral joint.
Adduction of thigh @ acetabulofemoral joint.

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9
Q

Fibularis longus

A

O: Head of fibula
Proximal 1/2 of lateral fibula
I: Base of the dorsal aspect of the 1st metatarsal.
–1st cuneiform.
K: Plantarflexion of foot @ ankle joint.
Eversion of foot @ subtalar joint.

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10
Q

Infraspinatus

A

O: Infraspinous fossa of the scapula
I: Middle facet of the greater tubercle of the humerus
K: Externally rotates arm @ glenohumeral joint.

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11
Q

Iliocostalis Lumborum

A

O: Iliac crest of ilium
Sacral crest of sacrum
I: Rib angles 7-12
K: Extension of trunk @ spinal joints.
Lateral flexion of trunk @ spinal joints.
Ipsilateral rotation of trunk @ spinal joints.

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12
Q

Tib ant

A

O: Lateral condyle of tibia.
–Proximal 2/3 of anterior tibia.
–Interosseous membrane.
I: 1st cuneiform.
–Base of 1st metatarsal.
K: Dorsiflexion of foot @ ankle joint.
Inversion of foot @ subtalar joint.

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13
Q

FCU

A

O: Medial epicondyle of the humerus via common flexor tendon.
–Medial olecranon of the ulna.
–Proximal 2/3 posterior shaft of the ulna.
I: Pisiform.
–Hook of hamate.
–Base of 5th metacarpal.
K: Flexes hand @ wrist joint.
–Ulnar deviates hand @ wrist joint.

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14
Q

Triceps

A

O: Infraglenoid tubercle of the scapula (long head).
–Proximal 1/3 posterior shaft of the humerus (lateral head).
–Distal 2/3 posterior shaft of the humerus (medial head).
I: Olecranon process of the ulna
K: Extends forearm @ elbow joint.
Extends arm @ glenohumeral joint.

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15
Q

Tib post

A

O: Proximal posterior tibia.
–Fibula.
–Interosseous membrane.
I: Base of metatarsals 2 – 4.
–Navicular tuberosity.
–All 3 cuneiforms.
–Cuboid.
–Calcaneus.
K: Plantarflexion of foot @ ankle joint.
Inversion of foot @ subtalar joint.

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16
Q

Rectus abdominis

A

O: Xiphoid process of sternum
Cartilages of ribs 5-7
I: Pubic crest of pubis.
–Pubic symphysis of pubis.
K: Flexion of trunk @ spinal joints.
Lateral flexion of trunk @ spinal joints.
Posterior pelvic tilt @ lumbosacral joint.
Compresses abdominal contents.

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17
Q

Clavicular head of pec major

A

O: Medial 1⁄2 of the clavicle
I: Lateral lip of bicipital groove of humerus
K: Flexes arm @ glenohumeral joint.
Adduction

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18
Q

EPB

A

O: Distal 1/3 posterior surface of radius
Interosseous membrane
I: Base of proximal phalanx of 1st digit.
K: Extends thumb @ carpometacarpal & metacarpophalangeal joints.
–Abducts thumb @ carpometacarpal joint.

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19
Q

Extensor digitorum

A

O: Lateral epicondyle of the humerus via common extensor tendon
I: Middle & distal phalanx of digits 2-5 (via dorsal digital expansion)
K: Extends digits 2-5 @ metacarpophalangeal, proximal & distal interphalangeal joints.
–Extends hand @ wrist joint

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20
Q

Rhomboid major

A

O: Spinous processes of thoracic vertebrae 2-5
I: Inferior medial border of the scapula
K: Retracts scapula @ scapulocostal joint.
–Elevates scapula @ scapulocostal joint.
–Downward rotation of scapula @ scapulocostal joint.

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21
Q

Biceps femoris

A

O: Ischial tuberosity of ischium (long head)
Linea aspera of femur (short head)
I: Head of fibula.
–Lateral condyle of tibia
K: Flexion of leg @ knee joint.
Extension of thigh @ acetabulofemoral joint.

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22
Q

Flexor digiti minimi manus

A

O: hook of hamate
Flexor retinaculum
I: Medial side of proximal phalanx of 5th digit
K: Flexes pinky @ carpometacarpal & metacarpophalangeal joints

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23
Q

Flexor digiti minimi pedis

A

O: Base of 5th metatarsal
Tendon of fibularis longus
I: Proximal phalanx of 5th toe.
K: Flexion of 5th toe @ metatarsophalangeal joint

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24
Q

ECRB

A

O: Lateral epicondyle of the humerus via common extensor tendon.
I: Base of 3rd metacarpal.
K: Extends hand @ wrist joint.
–Radial deviates hand @ wrist joint.

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25
Q

Lats

A

O: Iliac crest.
–Sacral crest.
–Spinous processes of thoracic vertebrae 7 – lumbar vertebrae 5.
–Lowest 4 ribs (9-12) via thoracolumbar fascia.
–Inferior angle of the scapula.
I: Floor of the bicipital groove of the humerus.
K: Internally rotates arm @ glenohumeral joint.
–Extends arm @ glenohumeral joint.
–Adducts arm @ glenohumeral joint.
Depresses scapula @ scapulocostal joint.
Anterior tilt of pelvis @ lumbosacral joint.

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26
Q

Pronator teres

A

O: Medial epicondyle of humerus via common flexor tendon (Humeral head)
Coronoid process of ulna (Ulnar head)
I: Pronator tubercle of the radius.
K: Pronates forearm @ radioulnar joint.
–Flexes forearm @ elbow joint.

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27
Q

Rectus capitis posterior minor

A

O: Posterior tubercle of vertebra C1
I: Inferior nuchal line of occiput
K: Extension of head @ atlanto-occipital joint

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28
Q

Sternal head pec major

A

O: Sternum
Costal cartilages of ribs 1-7
I: Lateral lip of bicipital groove of humerus
K: Adducts arm @ glenohumeral joint

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29
Q

Teres major

A

O: Inferior lateral border of the scapula.
I: Medial lip of bicipital groove of the humerus
K: Internally rotates arm @ glenohumeral joint.
–Adducts arm @ glenohumeral joint.
–Extends arm @ glenohumeral joint.

30
Q

Serratus anterior

A

O: Ribs 1-9
I: Anterior surface of the medial border of the scapula
K: Protraction of scapula @ scapulocostal joint.
–Upward rotation of scapula @ scapulocostal joint.

31
Q

Gluteus medius

A

O: External surface of ilium between the anterior & posterior gluteal lines
I: Greater trochanter of femur (external surface)
K: 1. Flexion of thigh @ acetabulofemoral joint.
2. Lateral rotation of thigh @ acetabulofemoral joint.
3. Abduction of thigh @ acetabulofemoral joint.
4. Medial rotation of thigh @ acetabulofemoral joint.
5. Extension of thigh @ acetabulofemoral joint.

32
Q

Soleus

A

O: Head of fibula.
–Proximal 1/3 of fibula.
–Soleal line of tibia.
I: Calcaneus (via Achilles tendon)
K: Plantarflexion of foot @ ankle joint

33
Q

Extensor digitorum brevis

A

O: Dorsal surface of calcaneus
I: Lateral side of extensor digitorum longus tendons for toes 2 – 4 (via dorsal digital expansion)
K: Extension of toes 2 – 4 @ metatarsophalangeal, proximal & distal interphalangeal joints

34
Q

Anconeus

A

O: Lateral epicondyle of the humerus
I: Lateral olecranon process of the ulna.
–Proximal 1⁄4 posterior shaft of the ulna
K: Extends forearm @ elbow joint

35
Q

Middle scalene

A

O: Transverse processes of cervical vertebrae 2-7
I: 1st rib
K: Lateral flexion of neck @ spinal joints.
–Flexes neck @ spinal joints.
–Elevates 1st rib (deep inhalation) @ sternocostal & costospinal joints

36
Q

Coracobrachialis

A

O: Coracoid process of the scapula
I: Middle medial shaft of the humerus
K: Flexes arm @ glenohumeral joint.
–Adducts arm @ glenohumeral joint

37
Q

Fibularis brevis

A

O: Distal 1⁄2 of lateral fibula
I: Tuberosity of 5th metatarsal
K: Plantarflexion of foot @ ankle joint.
Eversion of foot @ subtalar joint.

38
Q

Brachioradialis

A

O: Proximal 2/3 lateral supracondylar ridge of the humerus
I: Superior to styloid process of the radius
K: Flexes forearm @ elbow joint.
–Supinates forearm @ radioulnar joints (to mid position).
–Pronates forearm @ radioulnar joints (to mid position).

39
Q

Vastus Medialis

A

O: Medial lip of linea aspera of femur.
–Intertrochanteric line of femur.
–Medial supracondylar line of femur.
I: Tibial tuberosity of tibia (via patellar ligament)
K: Extension of leg @ knee joint

40
Q

Pronator Quadratus

A

O: Distal 1⁄4 of the ulna
I: Distal 1⁄4 of the radius
K: Pronates forearm @ radioulnar joints

41
Q

Extensor Hallucis Brevis

A

O: Dorsal surface of calcaneus
I: Base of proximal phalanx of big toe
K: Extension big toe @ metatarsophalangeal joint

42
Q

Gluteus minimus

A

O: External surface of ilium between the anterior & inferior gluteal lines
I: Greater trochanter of femur (anterior surface)
K: 1. Flexion of thigh @ acetabulofemoral joint.
2. Lateral rotation of thigh @ acetabulofemoral joint.
3. Abduction of thigh @ acetabulofemoral joint.
4. Medial rotation of thigh @ acetabulofemoral joint.
5. Extension of thigh @ acetabulofemoral joint.

43
Q

Posterior deltoid

A

O: Spine of the scapula
I: Deltoid tuberosity of the humerus
K: Extension of the arm @ glenohumeral joint
External rotation of the arm @ glenohumeral joint
Horizontal abduction of the arm @ glenohumeral joint

44
Q

Adductor Hallucis

A

O: Base of metatarsals 2 – 4 (oblique).
–Tendon of fibularis longus (oblique).
–Plantar metatarsophalangeal ligaments (transverse).
I: Lateral base of proximal phalanx of big toe
K: Adduction of big toe @ metatarsophalangeal joint.
Flexion of big toe @ metatarsophalangeal joint.

45
Q

Flexor Digitorum Longus

A

O: Middle 1/3 posterior tibia
I: Base of distal phalanges of toes 2 – 5
K: Flexion of toes 2 – 5 @ metatarsophalangeal, proximal & distal interphalangeal joints.
Plantarflexion of foot @ ankle joint.
Inversion of foot @ subtalar joint.

46
Q

External abdominal oblique

A

O: Ribs 5 – 12 (lower 8 ribs).
I: Anterior iliac crest of ilium.
–Pubic tubercles of pubis.
–Pubic crest of pubis.
–Linea alba.
K: 1 Flexion of trunk @ spinal joints.
2. Lateral flexion of trunk @ spinal joints.
3. Contralateral rotation of trunk @ spinal joints.
4. Posterior pelvic tilt @ lumbosacral joint.
5. Compresses abdominal contents.

47
Q

Splenius Cervicis

A

O: Spinous processes of vertebrae T3 – T6
I: Transverse processes of vertebrae C1 – C3
K: Extension of neck @ spinal joints.
Lateral flexion of neck @ spinal joints.
Ipsilateral rotation of neck @ spinal joints.

48
Q

Quadratus Femoris

A

O: Ischial tuberosity of ischium
I: Quadrate tubercle of femur
K: External rotation of thigh @ acetabulofemoral joint.
Horizontal abduction of thigh @ acetabulofemoral joint.

49
Q

Semitendinosus

A

O: Ischial tuberosity of ischium
I: Pes anserine tendon (proximal anterior medial surface of tibia)
K: Flexion of leg @ knee joint.
Extension of thigh @ acetabulofemoral joint.

50
Q

Biceps Brachii

A

O: Supraglenoid tubercle of the scapula (long head)
Coracoid process of the scapula (short head)
I: Radial tuberosity of the radius.
–Bicipital aponeurosis.
K: Flexes arm @ glenohumeral joint.
–Flexes forearm @ elbow joint.
–Supinates forearm @ radioulnar joint.

51
Q

Temporalis

A

O: Temporal fossa of temporal bone
I: Coronoid process of mandible.
–Anterior border of ramus of mandible
K: Elevation of mandible @ temporomandibular joint.
Retraction of mandible @ temporomandibular joint.

52
Q

Semispinalis Capitis

A

O: Transverse processes of vertebrae C7 – T6
Articular processes of vertebrae C4 – C6
I: Between superior & inferior nuchal lines of occiput (5 to 6 segments above)
K: Extension of head & neck @ spinal joints.
Lateral flexion of head & neck @ spinal joints.
Contralateral rotation of head & neck @ spinal joints

53
Q

Pec Minor

A

O: Ribs 3-5
I: Coracoid process of scapula
K: Protraction of scapula @ scapulocostal joint.
–Depression of scapula @ scapulocostal joint.
–Downward rotation of scapula @ scapulocostal joint

54
Q

Supraspinatus

A

O: Supraspinous fossa of the scapula
I: Superior facet of greater tubercle of the humerus
K: Abducts arm @ glenohumeral joint
Flexes arm @ glenohumeral joint

55
Q

Piriformis

A

O: Anterior surface of sacrum
I: Greater trochanter of femur (superior surface)
K: External rotation of thigh @ acetabulofemoral joint.
Horizontal abduction of thigh @ acetabulofemoral joint.

56
Q

Longissimus Thoracis

A

O: Sacrum.
–Iliac crest of ilium.
–Transverse processes of vertebrae L1 – L5
I: Transverse processes of vertebrae T1 – T12.
–Ribs 4 – 12 (between the tubercles & angles)
K: Extension of trunk @ spinal joints.
Lateral flexion of trunk @ spinal joints.
Ipsilateral rotation of trunk @ spinal joints

57
Q

Flexor pollicis longus

A

O: Medial epicondyle of the humerus via common flexor tendon (most of the time).
–Coronoid process of the ulna.
Interosseous membrane.
–Anterior surface of the radius.
I: Base of distal phalanx of the 1st digit
K: Flexes thumb @ carpometacarpal, metacarpophalangeal, proximal & distal interphalangeal joints.
–Flexes hand @ wrist joint.

58
Q

Flexor Hallucis Longus

A

O: Distal 2/3 posterior fibula & interosseous membrane
I: Base of distal phalanx of big toe
K: Flexion of big toe @ metatarsophalangeal & interphalangeal joints.
Plantarflexion of foot @ ankle joint.
Inversion of foot @ subtalar joint.

59
Q

Rectus Capitis Post Major

A

O: Spinous process of vertebra C2
I: Lateral 1⁄2 of inferior nuchal line of occiput
K: Extension of head @ atlanto-occipital joint.
Lateral flexion of head @ atlanto-occipital joint.
Ipsilateral rotation of head @ atlanto-axial joint

60
Q

Gracilis

A

O: Anterior body of pubis
Inferior ramus of pubis
I: Pes anserine tendon (proximal anterior medial surface) of tibia
K: Adduction of thigh @ acetabulofemoral joint.
Flexion of thigh @ acetabulofemoral joint.
Flexion of leg @ knee joint

61
Q

Internal abdominal oblique

A

O: Iliac crest of ilium.
–Inguinal ligament.
–Thoracolumbar fascia
I: Ribs 10 – 12 (lower 3).
–Linea alba
K: Flexion of trunk @ spinal joints.
Lateral flexion of trunk @ spinal joints.
Ipsilateral rotation of trunk @ spinal joints.
Posterior pelvic tilt of trunk @ spinal joints.

62
Q

Levator scapula

A

O: Transverse processes of cervical vertebrae 1-4
I: Medial border of scapula (between superior border & root of the spine of scapula)
K: Elevates scapula @ scapulocostal joint.
–Extends neck @ spinal joints.
–Lateral flexion of neck @ spinal joints.
–Ipsilateral rotation of neck @ spinal joints.
–Downward rotation of scapula @ scapulocostal joint

63
Q

Vastus intermedius

A

O: Anterior & lateral shaft of femur
I: Tibial tuberosity of tibia (via patellar ligament)
K: Extension of leg @ knee joint

64
Q

Extensor Hallucis Longus

A

O: Middle 1/3 of anterior fibula
Interosseous membrane
I: Base of distal phalanx of big toe
K: Extension of big toe @ metatarsophalangeal & interphalangeal joints.
Inversion of foot @ ankle joint
Dorsiflexion of foot @ ankle joint.

65
Q

Lumbricals

A

O: Tendon of flexor digitorum profundus of digits 2-5
I: Lateral side of dorsal digital expansion of digits 2-5.
–Lumbrical 1: into the tendon of the 2nd digit.
–Lumbrical 2: into the tendon of the 3rd digit.
–Lumbrical 3: into the tendon of the 4th digit.
–Lumbrical 4: into the tendon of the 5th digit
K: Flexes digits 2-5 @ metacarpophalangeal joints.
–Extends digits 2-5 @ proximal & distal interphalangeal joints

66
Q

Posterior scalene

A

O: Transverse processes of cervical vertebrae 5-7 (posterior tubercles)
I: 2nd rib
K: Lateral flexion of neck @ spinal joints.
–Elevates 1st rib (during deep inhalation) @ sternocostal & costospinal joints

67
Q

Vastus Lateralis

A

O: Gluteal tuberosity of femur.
–Lateral lip of linea aspera of femur.
–Intertrochanteric line of femur
I: Tibial tuberosity of tibia (via patellar ligament)
K: Extension of leg @ knee joint

68
Q

Longissimus Capitis

A

O: Transverse processes of vertebrae T1 – T5
Articular processes of vertebrae C5 – C7
I: Mastoid process of temporal bone
K: Extension of trunk @ spinal joints.
Lateral flexion of trunk @ spinal joints.
Ipsilateral rotation of trunk @ spinal joints

69
Q

Flexor Digitorum Superficialis

A

O: Medial epicondyle of the humerus via common flexor tendon (humeroulnar head).
–Coronoid process of the ulna (humeroulnar head).
–Proximal 1⁄2 anterior shaft radius – anterior oblique line (radial head)
I: Base of middle phalanx of digits 2-5 (medial & lateral sides – splits for FDP tendons)
K: Flexes fingers 2-5 @ metacarpophalangeal & proximal interphalangeal joints.
–Flexes hand @ wrist joint

70
Q

Upper Traps

A

O: External occipital protuberance
–Medial 1/3 of superior nuchal line of the occiput
–Nuchal ligament
Spinous process of C7
I: Lateral 1/3 of the clavicle
–Acromion process of the scapula
K: Retracts scapula @ scapulocostal joint
–Elevates scapula @ scapulocostal joint
–Upward rotation of scapula @ scapulocostal joint
Lateral flexion of head & neck @ atlanto-occipital & spinal joints (UT).
–Extends head & neck @ atlanto-occipital & spinal joints (UT).
–Contralateral rotation of head & neck @ atlanto-occipital & spinal joints

Mocks (4 decks)

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