Muscles on muscles (SECOND MIDTERM) Flashcards Preview

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Flashcards in Muscles on muscles (SECOND MIDTERM) Deck (70):
1

abductor pollicis longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: posterior surface of radius and ulna
insertion: base of 1st metacarpal
innervation: radial nerve
spinal nerve segments: C6-C7
evolutionary group: abductors
action: abducts and extends thumb

2

adductor longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: inferior ramus of pubis anterior to adductor brevis
insertion: linea aspera of femur
innervation: obturator nerve
spinal nerve segments: L3-L4
evolutionary group: adductors
action: adduction, flexion, and medial rotation at hip

3

adductor magnus (adductor portion)...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: inferior ramus of pubis
insertion: adductor tubercle of femur
innervation: obturator nerve
spinal nerve segments: L3-L4
evolutionary group: adductors
action: adduction at hip, flexion and medial rotation

4

adductor magnus (hamstring portion)...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: ischial tuberosity
insertion: linea aspera of femur
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S2
action: extension and lateral rotation

5

biceps brachii LONG HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: supraglenoid tubercle
insertion: radial tuberosity on proximal tubercle
innervation: musculocutaneous nerve
spinal nerve segments: C5-C6
evolutionary group: flexors
action: flexes elbow and supinates shoulder

6

biceps brachii SHORT HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: coracoid process of the scapula
insertion: radial tuberosity on proximal tubercle
innervation: musculocutaneous nerve
spinal nerve segments: C5-C6
evolutionary group: flexors
action: flexes elbow and supinates shoulder

7

biceps femoris LONG HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: ischial tuberosity
insertion: head of fibula, lateral condyle of tibia
innervation: sciatic nerve (tibial portion)
spinal nerve segments: S1-S3
evolutionary group: flexors
action: flexion at knee, extension and lateral rotation at hip

8

biceps femoris SHORT HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: linea aspera
insertion: head of fibula, lateral condyle of tibia
innervation: peroneal nerve
spinal nerve segments: L5-S2
evolutionary group: abductors
action: flexes at knee

9

brachialis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior, distal surface of humerus
insertion: tuberosity of ulna
innervation: musculocutaneous nerve and radial nerve
spinal nerve segments: C5-C6 and C7-C8
evolutionary group: flexors
action: flexion at elbow

10

brachioradialis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: ridge superior to the lateral epicondyle of humerus
insertion: lateral aspect of styloid process of radius
innervation: radial nerve
spinal nerve segments: C5-C6
evolutionary group: flexors
action: flexion at elbow

11

coracobrachialis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: coracoid process of the scapula
insertion: mid shaft of humerus
innervation: musculocutaneous nerve
spinal nerve segments: C5-C7 (focus on C5-C6)
evolutionary group: flexors
action: adducts humerus & flexes at shoulder

12

deltoideus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: clavicle and scapula (acromion and scapular spine)
insertion: deltoid tuberosity of humerus
innervation: axillary nerve
spinal nerve segments: C5-C6
evolutionary group: abductors
action: flexes & extends at shoulder; abducts & medially and laterally rotates humerus

13

extensor carpi radialis brevis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral epicondyle of humerus
insertion: base of third metacarpal bone
innervation: radial nerve
spinal nerve segments: C6-C7
evolutionary group: extensors
action: extension and abduction at wrist

14

extensor carpi radialis longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral supracondylar ridge of humerus
insertion: base of second metacarpal bone
innervation: radial nerve
spinal nerve segments: C6-C7
evolutionary group: extensors
action: extension and abduction at wrist

15

extensor carpi ulnaris...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral epicondyle of humerus; adjacent dorsal surface of ulna
insertion: base of 5th metacarpal bone
innervation: deep radial nerve
spinal nerve segments: C6-C8
evolutionary group: extensors
action: extension and abduction at wrist

16

extensor digitorum...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral epicondyle of humerus
insertion: extensor tendons over posterior surfaces of phalanges of digits 2-5
innervation: radial nerve
spinal nerve segments: C6-C8 (focus on C7-C8)
evolutionary group: extensors
action: extends at wrist, extends fingers

17

extensor digitorum longus pedis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral condyle of tibia, anterior surface of fibula
insertion: superior surfaces of phalanges, toes 2-5
innervation: peroneal nerve
spinal nerve segments: L4-S1
evolutionary group: extensors
action: extension at joints of toes 2-5

18

extensor hallucis longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior surface of fibula
insertion: superior surfaces, distal phalanx of great toe
innervation: peroneal nerve
spinal nerve segments: L4-S1
evolutionary group: extensors
action: extension at joints of big toe

19

flexor carpi radialis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial epicondyle of humerus
insertion: base of second and third metacarpal bones
innervation: median nerve
spinal nerve segments: C6-C7
evolutionary group: flexors
action: flexion and abduction at wrist

20

flexor carpi ulnaris...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial epicondyle of humerus; adjacent medial surface of olecranon process and anteromedial portion of ulna
insertion: pisiform, hamate, and base of 5th metacarpal bone
innervation: ulnar nerve
spinal nerve segments: C8-T1
evolutionary group: flexors
action: flexion and adduction at wrist

21

flexor digitorum longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: posteromedial surface of tibia
insertion: inferior surface of distal phalanges, toes 2-5
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S1
evolutionary group:
action: flexion at joints of toes 2-5

22

flexor digitorum profundus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial & posterior surfaces of ulna, medial surface of coronoid process, and interosseus membrane
insertion: bases of distal phalanges of digits 2-5
innervation: median & ulnar nerves
spinal nerve segments: C8-T1
evolutionary group: flexors
action: flexes at wrist; flexes digits at metacarpophalangeal & interphalangeal joints

23

flexor digitorum superficialis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial epicondyle of humerus
insertion: midlateral surfaces of middle phalanges of fingers 2-5
innervation: median nerve
spinal nerve segments: C7-T1
evolutionary group: flexors
action: flexes wrist and middle phalanges

24

flexor hallucis longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: posterior surface of fibula
insertion: inferior surface, distal phalanx of big toe
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S1
evolutionary group: flexors
action: flexion at joints of big toe

25

flexor pollicis longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior shaft of radius, interosseus membrane
insertion: base of distal phalanx of thumb
innervation: median nerve
spinal nerve segments: C8-T1
evolutionary group: flexors
action: flexion at joints of thumb

26

gastrocnemius LATERAL HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral condyle of femur
insertion: calcaneal tuberosity via calcaneal tendon
innervation: tibial nerve
spinal nerve segments: S1-S2
evolutionary group: flexors
action: plantar flexes foot; flexes at knee (slightly)

27

gastrocnemius MEDIAL HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial condyle of femur
insertion: calcaneal tuberosity via calcaneal tendon
innervation: tibial nerve
spinal nerve segments: S1-S2
evolutionary group: flexors
action: plantar flexes foot; flexes at knee (slightly)

28

gemellus INFERIOR...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: ischial spine
insertion: medial surface of greater trochanter with tendon of obturator internus
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S2
action: lateral rotation at hip

29

gemellus SUPERIOR...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: ischial tuberosity
insertion: medial surface of greater trochanter with tendon of obturator internus
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S2
action: lateral rotation at hip

30

gluteus maximus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: posterior surface of ilium, sacrum, coccyx
insertion: iliotibial tract & gluteal tuberosity of femur
innervation: inferior gluteal nerve (peroneal nerve)
spinal nerve segments: L5-S2
evolutionary group: abductors
action: extends at hip; abducts and laterally rotates thigh

31

gluteus medius...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior iliac crest, lateral surface between posterior and anterior gluteal lines
insertion: greater trochanter of femur
innervation: superior gluteal nerve
spinal nerve segments: L4-S1
evolutionary group: abductors
action: abduction and medial rotation at thigh

32

gracilis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: inferior ramus of pubis
insertion: medial surface of tibia, inferior to medial condyle
innervation: obturator nerve
spinal nerve segments: L3-L4
evolutionary group: adductors
action: adducts thigh, flexes at knee

33

infraspinatus...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: infraspinous fossa of scapula
insertion: greater tubercle of humerus
innervation: suprascapular nerve
spinal nerve segments: C5-C6
action: laterally rotates humerus

34

latissimus dorsi...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: spinous process of inferior thoracic & all lumbar; ribs 8-12; thoracolumbar fascia
insertion: floor of inter tubercular groove of the humerus
innervation: thoracodorsal nerve
spinal nerve segments: C6-C8
action: extension, adduction, and medial rotation of shoulders

35

levator scapulae...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: transverse processes of first 4 cervical vertebrae
insertion: vertebral border of scapula near superior angle
innervation: dorsal scapular nerve
spinal nerve segments: C3-C4, C5
action: retracts scapula, depresses glenoid

36

obturator internus...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: lateral and medial margin of obturator foramen
insertion: medial surface of greater trochanter
innervation: special nerve from sacral plexus
spinal nerve segments: L5-S2
action: lateral rotation at hip

37

palmaris longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial epicondyle of humerus
insertion: palmar aponeurosis
innervation: median nerve
spinal nerve segments: C6-C7
evolutionary group: flexors
action: flexes wrist

38

pectoralis major CLAVICULAR HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: inferior margin of clavicle
insertion: greater tubercular crest of humerus
innervation: medial and lateral pectoral nerves
spinal nerve segments: C5-T1
action: flexion, adduction, and medial rotation at shoulder

39

pectoralis major STERNAL HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: ventro-lateral margin of sternum; costal cartilages 1-6
insertion: greater tubercular crest of humerus
innervation: medial and lateral pectoral nerves
spinal nerve segments: C5-T1
action: depresses and adducts humerus

40

pectoralis minor...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior, superior surfaces of ribs 2-5
insertion: coracoid process of scapula
innervation: medial pectoral nerve
spinal nerve segments: C8-T1
evolutionary group: adductors
action: depress scapula or elevate ribs

41

peroneus brevis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: midlateral margin of fibula
insertion: base of 5th metatarsal bone
innervation: peroneal nerve
spinal nerve segments: L4-S1
evolutionary group: extensors
action: eversion of foot and extension (plantar flexion) at ankle

42

peroneus longus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral condyle of tibia, head and proximal shaft of fibula
insertion: base of first metatarsal bone and medial cuneiform bone
innervation: peroneal nerve
spinal nerve segments: L4-S1
evolutionary group: extensors
action: eversion of foot and extension (plantar flexion) at ankle; support longitudinal arch

43

piriformis...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: anterolateral surface of sacrum
insertion: greater trochanter of femur
innervation: branches of sacral nerves
spinal nerve segments: S1-S2
action: lateral rotation and abduction at hip

44

popliteus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: lateral condyle of femur
insertion: posterior surface of proximal tibial shaft
innervation: tibial nerve
spinal nerve segments: L4-S1
evolutionary group: flexors
action: medial rotation of tibia (or lateral rotation of femur), flexion at the knee

45

pronator quadratus...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: anterior and medial surfaces of distal portion of ulna
insertion: anterolateral surface of distal portion of radius
innervation: median nerve
spinal nerve segments: C8-T1
action: pronation

46

pronator teres...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: medial epicondyle of humerus and coronoid process of ulna
insertion: lateral radius (midshaft)
innervation: median nerve
spinal nerve segments: C6-C7
action: pronates forearm

47

quadratus femoris...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: lateral border of ischial tuberosity
insertion: intertrochanteric crest of femur
innervation: special nerve from sacral plexus
spinal nerve segments: L4-S1
action: lateral rotation at hip

48

rectus femoris...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior inferior iliac spine
insertion: tibial tuberosity via patellar ligament
innervation: femoral nerve
spinal nerve segments: L2-L4
evolutionary group: extensors
action: extends knee and flexes at hip

49

vastus intermedius...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterolateral surface of femur and linea aspera (distal half)
insertion: tibial tuberosity via patellar ligament
innervation: femoral nerve
spinal nerve segments: L2-L4
evolutionary group: extensors
action: extends at knee

50

vastus lateralis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior & inferior to greater trochanter of femur and proximal half of linea aspera
insertion: tibial tuberosity via patellar ligament
innervation: femoral nerve
spinal nerve segments: L2-L4
evolutionary group: extensors
action: extends at knee

51

vastus medialis...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: entire length of linea aspera
insertion:
innervation: femoral nerve
spinal nerve segments: L2-L4
evolutionary group: extensors
action: extends at knee

52

rhomboideus MAJOR...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: spinous processes of T1-T4
insertion: medial border of scapula from spine to inferior angle
innervation: dorsal scapular nerve
spinal nerve segments: C5
action: adducts scapula and performs downward rotation

53

rhomboideus MINOR...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: spinous process of vertebrae C7-T1
insertion: medial border of scapula near spine
innervation: dorsal scapular nerve
spinal nerve segments: C5
action: adducts scapula and performs downward rotation

54

sartorius...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior superior iliac spine
insertion: medial surface or tibia near tibial tuberosity
innervation: femoral nerve
spinal nerve segments: L2-L4
evolutionary group: flexors
action: flexion at knee, flexion and lateral rotation at hip

55

semimembranosus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: ischial tuberosity
insertion: posterior surfaces of medial condyle of tibia
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S2
evolutionary group: flexors
action: flexion at knee, extension and medial rotation at hip

56

semitendinosus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: ischial tuberosity
insertion: proximal, medial surface of tibia near insertion of gracilis
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S2
evolutionary group: flexors
action: flexion at knee, extension and medial rotation at hip

57

serratus anterior...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: first 9 ribs
insertion: medial edge of scapula's deep surface
innervation: long thoracic nerve
spinal nerve segments: C5-C7
evolutionary group: originally body wall musculature
action: rotates and protracts scapula, elevates glenoid

58

soleus...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: head and proximal shaft of fibula and adjacent posteromedial shaft of tibia
insertion: calcaneus by calcanea tendon (with gastrocnemius)
innervation: sciatic nerve (tibial portion)
spinal nerve segments: L5-S1
evolutionary group: extensors
action: extension (plantar flexion) at ankle

59

sternocleidomastoideus CLAVICULAR head and STERNAL head...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: CH = attaches to sternal end of clavicle; SH = attaches to manubrium
insertion: mastoid region of skull and lateral portion of superior nuchal line
innervation: accessory nerve and cervical spinal nerves or cervical plexus
spinal nerve segments: XI and C2-C3
action: together they flex the neck; alone one side flexes head toward shoulder and rotates face to opposite side

60

subscapularis...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: subscapular fossa of scapula
insertion: lesser tubercle of humerus
innervation: upper and lower sub scapular nerves
spinal nerve segments: C5-C6
action: medially rotates humerus

61

supinator...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: lateral epicondyle of humerus
insertion: proximal end of radius
innervation: radial nerve
spinal nerve segments: C6-C8
action: supinates forearm

62

supraspinatus...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: supraspinous fossa or the scapula
insertion: greater tubercle of humerus
innervation: suprascapular nerve
spinal nerve segments: C5
action: abducts humerus

63

tensor fascia latae...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: anterior superior iliac spine
insertion: lateral condyle of tibia via fascia lata (iliotibial tract)
innervation: superior gluteal nerve (peroneal nerve)
spinal nerve segments: L4-S1
evolutionary group: abductors
action: tense fascia lata; flex hip; abduct and medially rotate thigh

64

teres major...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: inferior angle of scapula
insertion: medial crest of inter tubercular groove
innervation: subscapular nerves
spinal nerve segments: C5-C6
action: extends at shoulder; adducts & medially rotates humerus

65

teres minor...
origin:
insertion:
innervation:
spinal nerve segments:
action:

origin: lateral border of scapula
insertion: greater tubercle of humerus
innervation: axillary nerve
spinal nerve segments: C5
action: laterally rotates humerus

66

tibialis anterior...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: proximal lateral tibia & interosseus membrane
insertion: medial cuneiform & 1st metatarsal
innervation: peroneal nerve
spinal nerve segments: L4-S1 (focus on L4-L5)
evolutionary group: extensors
action: dorsi flexes and inverts foot

67

trapezius...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: occipital bone; spines of C7-T12
insertion: acromion, spine of scapula, lateral 1/3 of clavicle
innervation: accessory nerve (cranial nerve XI)
spinal nerve segments: C3-C4
evolutionary group: branchial
action: elevate, retract, depress, or rotate scapula upward; elevate clavicle; extend neck

68

triceps brachii LATERAL HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: posterior surface of humeral shaft
insertion: olecranon process of ulna
innervation: radial nerve
spinal nerve segments: C6-C8
evolutionary group: extensors
action: extends elbow

69

triceps brachii LONG HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: infraglenoid tubercle of scapula
insertion: olecranon process of ulna
innervation: radial nerve
spinal nerve segments: C6-C8
evolutionary group: extensors
action: extends elbow, extends and adducts shoulder

70

triceps brachii MEDIAL HEAD...
origin:
insertion:
innervation:
spinal nerve segments:
evolutionary group:
action:

origin: posterior surface of humeral shaft
insertion: olecranon process of ulna
innervation: radial nerve
spinal nerve segments: C6-C8
evolutionary group: extensors
action: extends elbow