A&P 3.0 - muscle of the day list - A&P 3 Flashcards Preview

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Flashcards in A&P 3.0 - muscle of the day list - A&P 3 Deck (62):
1

Adductor longus

A, I, O

Proximal attachment: body of pubis, just below crest

Distal attachment: linea aspera of femur

Action: adduction of hip, assists flexion of hip

2

Adductor brevis

A, I, O

Origin: inferior RAMUS of the pubis

Insertion: upper 1/3 of linea aspera

Action: adducts thigh, flexes thigh, medial rotation of thigh

3

Adductor Magnus

O: Inferior Ramus of Pubis
Ischium to Ischial Tuberosity
I: Linea Aspera of femur
A: Adduction & medial rotation of thigh
Anterior: Flexion of thigh
Posterior: Extension of thigh

4

Pectineus

A, I, O

ORIGION : crest and superior RAMUS of the pubis

Insertion: pectineal line of femur - between lesser trochanter and linea aspera

Action: adducts and assists in flexion of the femur

5

Gracillis

A, I, O

Origin: inferior RAMUS of the pubis

Insertion: anterior proximal, medial tibia ( pes anserinus)

Action: adduction of the lower extremity, flexion of the knee

6

Pectinious is

Most anterior and most superior of the adductors

7

Adductor Magnus is

deepest

8


GRACILIS is

most medial

9

Rectus abdominus

A, I, O

Superior attachment: xipoid process of sternum, costal cartilage ribs 5-7

Inferior attachments: pubic crest, pubic symphysis

Action: flexion of trunk (spine), posterior tilt of pelvis

10

Internal obliques

A, I, O

ORIGIN: upper portion of inguinal ligament and iliac crest

Insertion: internal surface of lower 3 ribs and linea alba

Action: unilaterally- ipsilateral side-bending and rotation of the trunk

Bilaterally- flexion of trunk, compression of abdominal contents (breathing, coughing, hiccuping, bearing down)

11

Transverse Abdominus

O: Upper portion of inguinal ligament
Iliac crest
thoracolumbar aponeurosis
lower 6 ribs & costal cartilage
I: linea alba
A: compress the abdominal contents (in breathing, coughing, hiccuping, bearing down to defecate)

12

Thenar muscles

3 muscles around ball of thumb

Abductor pollicis brevis
Flexor pollicis brevis
Opponents pollicis

13

Thenar muscles

O, I, A

Origin: scaphoid, trapezium and flexor retinaculum

Insert: flexor/abductor : lateral side of base of proximal phalanx of the thumb
Opponens: lateral side of the 1st metacarpal

14

Thenar muscles

Action

Abductor pollicis brevis: abducts joint at MP joint

Flexor pollicis brevis: flexes thumb at MP joint

Opponens pollicis: opposition of thumb at CM joint

15

Extensor digitorum

O,I, A

Origin: LATERAL epicondyle of the humerus

Insertion: proximal, middle (intermediate) and distal phalanges of four fingers (NOT THE THUMB)

Action: extension of the fingers at the interphalangeal joints and the metacarpalophalangeal joints

16

Occipitofrontalis


A, I , O

Superior attachment: galea aponeurotica
Inferior attachment: frontalis - skin over eyebrows
Occipitalis- superior nuchal line of the occiput
Action - frontalis - raises eyebrows and wrinkles forehead
Occipitalis - anchors and retracts the galea posteriorly

17

Galea aponeurotica

Sheet like tissue over top of skull

Connects frontalis to occipitalis

18

Hypothenar muscles

3

Abductor digiti minimi - superficial
Flexor digiti minimi brevis - medial
Opponens digiti minimi - deep

19

Hypothernar eminence

Ulnar side of the palm
Formed by three muscles
Opposite side of the thenar

20

Abductor digiti minimi

A, I, o

Action - abducts the little finger (5th finger) at the MP joint, assists in opposition of the 5th finger towards the thumb
Proximal attachment -Pisiform, hamate and flexor retinaculum
Insertion - base of proximal phalange of 5th finger

21

Flexor digiti minimi brevis

A, I, o

Action - Flexes small short finger (5th finger) at the MP joint, assists in opposition of the 5th finger toward the joint
Proximal attachment -Pisiform, hamate and flexor retinaculum
Insertion - base of proximal phalange of 5th finger

22

Opponens digiti minimi

Action - Opposes 5th finger at the CM joint

Proximal attachment -Pisiform, hamate and flexor retinaculum

Insertion - shaft of the 5th metacarpal

23

All three have same proximal attachment

Pisiform, hamate and flexor retinaculum

2 most anteromedial metacarpals

24

Popliteus

A, O, I

Origin: lateral condyle of the femur

Insertion: posterior proximal tibia - above soleal line

Action: unlocks knee to permit flexion

25

Deepest muscle of the posterior knee

Popliteus

26

Plantaris

A, I, o

Sole of the foot

Origin: lateral super condylar ridge of the femur

Insertion: via a long tendon that attaches to the medial Achilles' tendon and deep fascia of the ankle

Action: assists in plantar flexion of ankle

Runs oblique from lateral to medial

27

Longest tendon in the body

Plantaris

Short muscle belly but longest tendon in the body

28

Transversospinalis

Multifidi
Rotatores

Deep to the erector spinalis muscles
Transverse to spinous
Rotatores are the deepest

29

Multifidi

Attachment: sacrum and transverse process of the lumbar through cervical vertebrae

Superior attachment: spinous process of lumbar vertebrae through second cervical vertebrae - span 2-4 vertebrae

Action: unilaterally - rotate vertebral column to opposite side

30

Rotatores

Attachment : transverse processes of the lumbar through cervical vertebrae

Superior attachment: spinous process of lumbar vertebrae through second cervical vertebrae - span 1-2 vertebrae

Action: unilaterally - rotate vertebral column to opposite side
Bilaterally - extend vertebral column

31

Peroneal muscles also known as

Fibularis

31

PERONEUS brevis

A, I ,O

Origin: distal 2/3 lateral fibula

Insertion: base of the 5th metatarsal

Action: plantar-flexion and eversion of foot

COULD BE FIBULARIS PERONEUS BREVIS

32

Diaphragm


A, I, O

Origin: inner surface of lower 6 ribs, upper 2 or 3 lumbar vertebrae, inner aspect of xipoid process

Insertion: central tendon (penetrated by aorta, vena cava and esophagus

Action: inspiration - elevates and expands lower costal margin and lower ribs, depresses central tendon and the two muscle domes, increasing volume of the thoracic cavity during inhalation

33

Diaphragm penetrated by

Aorta
Vena cava
Esophagus

34

Serratus posterior

A, I, O

Medial attachment: superior - spinous process C6 or 7 to T1 or 2; inferior - spinous process of T 10, 11, or 12 to L1, 2

Lateral attachment: superior - lateral side of angles of ribs 2-5; inferior- lower border of ribs 9-12

Action - superior - raises 2-5th ribs to ASSIST inhalation; inferior - draws lower ribs back and down

35

Scalenes

Anterior
Middle
Posterior

36

Anterior scalenes

A, I, O

Superior attachment - front of TP C3-C6

Inferior attachment - inner, upper edge of first rib

Action - lateral flexion of the neck, flexion

37

Middle scalenes

A,I, O

Superior attachment - back of TP C2-C7

Inferior attachment - outer, upper edge of first rib

Action - lateral flexion of the neck

38

Posterior scalenes

A, I, O

Superior attachment - back of TP C5, or C6, C7

Inferior attachment - lateral surface of 2nd, sometimes 3rd rib

Action - lateral flexion of the neck

39

Intercostals

A, I, O

Superior attachment: external/internal - inferior border of rib above

Inferior attachment: external/internal - superior border of rib below

Actions:

External - assist inspiration by contracting
Internal - assist expiration by contracting

40

Supinator

A, I, O

Proximal attachment : lateral epicondyle of the humerus and proximal ridge of the ulna

Proximal attachment: proximal anterior and lateral surface of the radius

Action: supinates forearm

41

Flexor digitorum superficials


A, I, O

Origin: common flexor tendon of medial epicondyle, ulnar collateral ligament, coronoid process ulna, interosseous membrane and proximal shaft of the radius

Insertion: sides of middle phalanges of 2-5 fingers

Action: flex 2-5 fingers (MC and interphalangeal joints) and flex wrist

42

Flexor digitorum profundis

A, I, O

Origin: anterior and medial surface of the proximal 3/4 of ulna

Insertion: bases of distal phalanges, Palmer surface of 2-5 fingers

Action: flexion of 2-5 fingers (MC & distal interphalangeal joints) assists in wrist flexion

DEEPEST MUSCLE of flexors
Pronator quadratus is the deepest of all

43

Anterior compartment

4 muscles

Tibialis anterior
Extensor hallicis longus
Extensor digitorum longus
PERONEUS tertius

44

Extensor hallicis longus

A, I, O

Origin: anteromedial surface of the fibula and interosseous membrane

Insertion: base of distal phalanx of great toe (hallicis)

Action: extension/dorsiflexion the big toe

45

Extensor digitorum longus

A, I , O

Origin: lateral condyle of tibia and superior 2/3 anterior margin of fibula

Insertion: by four tendons to dorsal surface of bases of proximal, middle, and digital phalanges of toes 2-5

Action: extension/dorsiflexion of the 4 lateral toes

46

PERONEUS tertius

A, I, O

Proximal: distal 1/3 of fibula

Distal attachment: base of 5th metatarsal bone

Action: assists dorsiflexion and eversion of foot

FIBULARIS

47

Lateral compartment

PERONEUS longus

48

PERONEUS longus

A, I, O

Origin: proximal 2/3 lateral fibula and head of the fibula

Insertion: base of the first metatarsal and medial cuniform

Action: plantar-flexion and eversion of foot

49

posterior compartment

Gastrocnemius
Soleus

50

Deep posterior compartment

Flexor digitorum longus
Flexor hallucis longus
Tibialis posterior

51

Flexor digitorum longus

A, I ,O

Origin: middle 1/3 posterior tibia

Insertion: by 4 tendons to base of distal phalanges toes 2-5

Action: flexes toes 2-5, assists plantar flexion and inversion

52

Flexor hallicis longus

A, I, O

Origin: lower 2/3 posterior fibula

Insertion: distal phalanx, great toe

Action: flexes great toe, assists plantarflexion and inversion
HALLUCIS STARTS MOST LATERAL AND ENDS UP MOST MEDIAL

53

Tibialis posterior

A, I, O

Origin: interosseous membrane and inner border of fibula and fibula

Insertion: most of the tarsals ( NOT CALCANEUS, TALUS OR MIDDLE/INTERMEDIATE CUNEIFORM) and the 3rd and 4th metatarsals

Action: plantarflexion, inversion

54

Suboccipital muscles

4

Rectus CAPITIS posterior major
Rectus CAPITIS posterior minor
Obliquus CAPITIS superior
Obliquus CAPITIS inferior

Deepest muscles in the neck

55

Rectus CAPITIS posterior major

A,I,o

Origin: spinous process axis (c2)

Insertion: inferior nuchal line of occiput

Action: all contribute to neck extension (postural), rock and tilt head into extension, rotate head to same side

56

Rectus CAPITIS posterior minor

Origin: tubercle of posterior arch of atlas (c1)

Insertion: inferior nuchal line of occiput

Action: all contribute to neck extension (postural), rock and tilt head into extension
Superior to major

57

Obliquuis CAPITIS superior

A,I, o

Origin: transverse process of atlas (c1)

Insertion: between nuchal lines of occiput

Action: all contribute to neck extension (postural), rock and tilt head into extension, laterally flexes to same side

58

Obloquus CAPITIS inferior

A, I, o

Origin: spinous process of axis (c2)

Insertion: transverse process of the atlas (c1)

Action: all contribute to neck extension (postural), rotate head to same side

59

Pronation teres

A, I, O

Origin: common flexor tendon (medial epicondyle of the humerus and coronoid process of ulna

Insertion: middle of lateral surface of radius

Action: pronate forearm, assists elbow flexion

MATCHED TO SUPINATOR IN SIZE AND OPPOSING ACTION

60

Pronator quadratus

Origin: medial, anterior distal 1/4th surface of the ulna

Insertion: lateral, anterior distal 1/4th of radius

Action: pronate forearm

61

Medial to lateral forearm muscles

Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronation teres