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MSK palpation exam > muscles > Flashcards

muscles Flashcards

1
Q

Erector spinae muscles (as a group):

origin

insertion

action

innervation

A

origin: iliac crest and posterior surface of the sacrum and lumbar SPs

insertion: SPs and TVPs of the cervical and thoracic spinal and the capitis

action: EXTENSION

innervation: posterior rami of spinal nerves

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2
Q

Sternocleidomastoid:

origin

insertion

action

innervation

A

origin: manubrium of sternum

insertion: mastoid process of temporal bone

action: contralateral rotation of head and neck

innervation: spinal accessory nerve

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3
Q

Scalene Group:

origin

insertion

action

innervation

A

origin : TVPs of C3-C7

insertion: 1st and 2nd rib

action: lateral flexion

innervation: Anterior rami of cervicle spinal nerves

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4
Q

Temporalis:

origin

insertion

action

innervation

A

origin : Temporal fossa and fascia

insertion: Coronoid process and ramus of mandible

action: Elevate and retract mandible

innervation: mandibular nerve

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5
Q

Masseter:

origin

insertion

action

innervation

A

origin: zygomatic arch

insertion: ramus of mandible

action: elevate and protract mandible

innervation: mandibular nerve

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6
Q

Rectus Abdominis:

origin

insertion

action

innervation

A

origin : pubic crest

insertion: xiphoid process and ribs 5,6,7

action: flex trunk

innervation: intercostal nerve

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7
Q

External abdominal Oblique Muscle:

origin

insertion

action

innervation

A

origin: lower 8 ribs

insertion: linea alba and iliac crest

action: contralateral rotation

innervation: intercostal nerve

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8
Q

Rhomboid Major & Minor:

origin

insertion

action

innervation

A

origin :
Minor: SPs of C7 and T1
Major: SPs of T2-T5

insertion: medial border of scapula

action: retraction (adduction) of scapula

innervation: dorsal scapular

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9
Q

Trapezius:

origin

insertion

action

innervation

A

origin: occipital protuberance and SPs of T1-T12

insertion: lateral clavicle, acromion and spine of scapula

action: elevate, depress, retract, upward rotation of scapula

innervation: spinal accessory

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10
Q

Latissimus Dorsi:

origin

insertion

action

innervation

A

origin: SPs of T7-L5 and crests of ilium and sacrum

insertion: bicipital groove of humerus

action: adduct, extend and medially rotate arm

innervation: thoracodorsal nerve

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11
Q

Serratus Anterior:

origin

insertion

action

innervation

A

origin: upper 9 ribs

insertion: anterior medial scapula

action: protract (abduct) and upward rotation of scapula

innervation: long thoracic

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12
Q

Pectoralis Major:

origin

insertion

action

innervation

A

origin: medial clavicle and sternum

insertion: bicitpal groove of humerus

action: adduction, horizontal adduction and medial (internal) rotation of arm

innervation: medial and lateral pectoral

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13
Q

Deltoid

origin

insertion

action

innervation

A

origin: lateral clavicle (anterior fibers), acromion (lateral fibers), spine of scpula (posterior fibers)

insertion: deltoid tuberosity of humerus

action: abduct shoulder

innervation: axillary

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14
Q

Subscapularis:

origin

insertion

action

innervation

A

origin : sub scapular fossa

insertion: lesser tubercle of humerus

action: medial rotation of shoulder joint

innervation: subscapular

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15
Q

Supraspinatus:

origin

insertion

action

innervation

A

origin: supraspinatous fossa

insertion: greater tubercle of humerus

action: abduction of shoulder joint

innervation: suprascapular

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16
Q

Infraspinatus:

origin

insertion

action

innervation

A

origin: infraspinatous fossa

insertion: greater tubercle of humerus

action: lateral rotation of shoulder joint

innervation: suprascapular

17
Q

Teres Major:

origin

insertion

action

innervation

A

origin: inferior lateral scapula

insertion: bicipital groove of humerus

action: medial rotation, adduction, extension

innervation: subscapular

18
Q

Teres Minor:

origin

insertion

action

innervation

A

origin: superior-lateral scapula

insertion: greater tubercle of humerus

action: lateral rotation of shoulder joint

innervation: axillary

19
Q

Biceps Brachii:

origin

insertion

action

innervation

A

origin: supraglenoid tubercle of scapula

insertion: radial tuberosity

action: flexion of arm

innervation: musculocutaneous

20
Q

Triceps Brachii:

origin

insertion

action

innervation

A

origin: infraglenoid tubercle of scapula

insertion: olecranon process of ulna

action: extension of arm and forearm

innervation: radial

21
Q

Pronator teres:

origin

insertion

action

innervation

A

origin: coronoid process of ulna and medial epicondyle of humerus

insertion: radius

action: pronation of forearm

innervation: median

22
Q

Flexor carpi radialis:

origin

Insertion

action

innervation

A

origin: medial epicondyle of humerus

insertion: base of 2 and 3 metacarpals

action: flex and abduct (radial deviate) hand

innervation: median

23
Q

Flexor Carpi ulnaris:

origin

insertion

action

innervation

A

origin: medial epicondyle of humerus and olecranon of ulna

insertion: base of 5 metacarpal, pisiform and hook of hamate

action: flex and adduct (ulnar deviation) of hand

innervation: ulnar

24
Q

Flexor digitorum superficialis:

origin

insertion

action

innervation

A

origin : medial epicondyle of humerus, coronoid process of ulna and radius

insertion: base of middle phalanges of 2-5

action: flex hand and fingers and MCP + PIP joints

innervation: median

25
Q

Extensor carpi radialis longus:

origin

insertion

action

innervation

A

origin: lateral supracondylar ridge of humerus

insertion: base of 2nd metacarpal

action: extend and radial deviate (abduct) wrist

innervation: radial

26
Q

brachioradialis

A

origin: lateral supracondylar ridge of humerus

insertion: styloid process of radius

action: flex forearm in mid pronation

innervation: radial

27
Q

extensor digitorum

A

origin: lateral epicondyle of humerus

insertion: distal and middle phalanges of 2-5

action: extend wrist, extend fingers at MCP, PIP and DIP

innervation: radial

28
Q

abductor pollicis longus

A

origin : middle of radius and ulna; interosseous membrane

insertion: base of 1st metacarpal

action: abduct and extend thumb at CMC joint

innervation: radial

29
Q

abductor pollicis brevis

A

origin: scaphoid, trapezium and flexor retinaculum

insertion: lateral base of proximal phalanx of thumb

action: abduction of thumb

innervation: median

30
Q

flexor pollicis brevis

A

origin: trapezium and flexor retinaculum

insertion: lateral base of proximal phalanx of thumb

action: flexion of thumb

innervation: median

31
Q

dorsal interossei

A

origin: adjacent sides of metacarpals

insertion:
#1: lateral index finger
#2: lateral middle finger
#3: medial middle finger
#4: medial ring finger

action: abduction (and flexion and extension) of fingers 2, 3, 4

innervation: ulnar

32
Q

Tensor Fascia Lata:

A

origin: lateral ASIS and anterior part of iliac crest

insertion: tibia (gerdy’s tubercle)

action: flex, abduct, medial rotate thigh (hip joint)

innervation: superior gluteal

33
Q

sartorius

A

origin : ASIS

insertion: proximal medial shaft of tibia (forms per anserine tendon)

action: flex hip and knee

innervation: femoral

34
Q

biceps femoris

A

origin
long head: ischial tuberosity
short head: linear aspera

insertion
-head of fibula
-lateral condyle of tibia

action
-hip extension and knee flexion

innervation
-tibia and common fibular

35
Q

semitendinous

A

origin; ischial tuberosity

insertion; proximal and medial shaft of tibia

action; hip extension and knee flexion

innervation: tibial

36
Q

rectus femoris

A

origin ; AIIS and groove above brim of acetabulum

insertion: base of patella and tibial tuberosity

action: extend leg (knee joint), flex thigh (hip joint)

innervation: femoral

37
Q

vastus medialis

A

origin : anterior and lateral femur

insertion: base of patella and tibial tuberosity

action: extension of leg (knee joint)

innervation: femoral

38
Q

adductor muscles (as a group)

A

origin : pubic ramus and ischium

insertion: linear aspera of femur

action: adduction of hip

innervation: obturator nerve (except pectinous - femoral nerve)

39
Q

gastrocnemius

A

origin
-medial head; medial condyles of femur
-lateral head; lateral condyles of femur

insertion; calcaneus via calcanea (achilles) tendon

action; planter flexion of foot (ankle joint), flexion of leg (at knee joint)

innervation; tibial

MSK palpation exam (3 decks)

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