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Flashcards in Origins And Muscles Deck (57):
0

Diagastric

Origin: jugular and mastoid processes

Insertion: inferior border of mandible

Action: depresses the mandible

1

Mylohyoid

Origin: medial surface of mandible

Insertion: median raphe

Action: raises the floor of mouth and draws the hyoid bone anteriortly

2

Masseter

Origin: zygomatic arch

Insertion: lateral surface of mandible

Action: elevates the mandible

3

Sternomastoid

Origin: manubrium

Insertion:mastoid process

Action: single muscles turn head; both muscles together depress the head and neck

4

Clavotrapezius

Orgin: superior nuchal line of occipital

Insertion: clavicle

Action: forward extension of humerus, turns head, flexes elbow

5

Sternohyoid

O: first costal cartilage

Insertion: hyoid bone

Action: moves hyoid posteriorly

6

Pectoantebrachialis

O: manubrium

I: fascia of forelimb at elbow

A: draws forelimb towards chest

7

Pectoralis major

O: sternum

I: proximal 2/3 of humerus

A: draws forelimb towards chest

8

Pectoralis minor

O: Sternum

I: proximal 1/2 of humerus

A: draws forelimb toward chest

9

Xiphihumeralis

O: sternum

I: proximal end of the humerus

A: draws forelimb towards chest

10

Epitrochlearis

Found in cats only

O: border of latissimus dorsi

I: fascia of forelimb

A: extends elbow

11

Triceps Brachii (long head)

O: axillary border of humerus

I: Olecranon process of ulna

A: extends elbow

12

Latissimus dorsi

O: spines of posterior thoracic vertebrae and lumbar vert.

I: medial humerus

A: pulls forelimb dorsal and posteriorly

13

External oblique

O: lumbodorsal fascia

I: linea alba

A: flex trunk, compresses abdominal viscera

14

Internal oblique

O: lumbodorsal fascia

I: linea alba

A: flex trunk, compresses abdominal viscera

15

Transversus abdominis

O: posterior ribs, ilium, lumbar vertebrae

I: linea alba

A: flex trunk, compresses abdominal viscera

16

Rectus abdominal

O: pubic symphysis

I: sternum

A flexes trunk and compresses abdominal viscera

17

Serratus ventralis

O: ribs and cervical vertebrae

I: Scapula

A: suspends thorax

18

Clavotrapezius

O: superior nuchal line of occipital

I: clavicle

A: turns head, flexes elbow, forward extension of humerus

19

Acromiotrapezius

O: cervical vertebrae and anterior thoracic vertebrae

I: scapular sine and associated fascia

A: holds and moves scapula

20

Spinotrapezius

O: spines of posterior thoracic vertebrae

I: scapular spine and associated fascia

A: holds and moves scapula

21

Levator scapulae ventralis

O: occipital bone and atlas

I: metacromion

A: moves scapula forward

22

Clavobrachialis

O: clavicle

I: proximal end of ulna

A: forward extension of humerus

23

Acromiodeltoid

O: acromion process

I: proximal end of humerus

A: raises and rotates humerus

24

Spinodeltoid

O: scapular spine

I: proximal end of humerus

A: raises and rotates humerus

25

Triceps brachii lateral head

O: axillary border of humerus

I: Olecranon process of ulna

A: extends elbow

26

Brachioradialis

O: mid humerus

I: distal radius

A: rotates radius, supinates forelimb

27

Supraspinatus

O: supraspinous fossa of scapula

I: greater tubercle of humerus

A: extends humerus

28

Infraspinatus

O: infra spinous fossa of scapula

I: greater tubercle of humerus

A: rotates humerus outward

29

Subscapularis

O: subscapular fossa of scapula

I: lesser tubercle of humerus

A: addicts humerus

30

Rhomboideus

O: cervical and thoracic vertebral spines

I: vertebral border of scapula

A: pulls scapula posteriorly

31

Rhomboideus capitus

O: occipital bone

I: vertebral border of scapula

A: pivots scapula

32

Teres major

O: scapula axillary border

I: proximal humerus

A: rotates humerus and draws it posteriorly

33

Triceps brachii medial head

O: axillary border of humerus

I: Olecranon process of ulna

A: extends elbow

34

Sartorius

O: iliac crest

I: tibia, patella, knee fascia

A: adducts and rotates thigh, extends knee

35

Gracilis

O: ischium and pubic symphysis

I: medial surface of tibia

A: adducts leg and moves leg posteriorly

36

Tibialis anterior

O: proximal tibia and fibula

I: first metatarsal

A: flexes foot

37

Iliopsoas

O: ilium and lumbar vertebrae

I: lesser trochanter of femur

A: moves thigh foreword and rotates outward

38

Pectineus

O: anterior pubis

I: proximal end of femur

A: adducts thigh

39

Adductor longus

O: pubis

I: femur

A: adducts thigh

40

Adductor femoris

O: pubis

I: femur

A: adducts thigh

41

Semimembranosus

O: ischial Tuberosity

I: tibia; proximal end and femur medial Epicondyle

A: extends thigh posteriorly

42

Semitendinosus

O: ischial Tuberosity

I: medial tibia

A: flexes knee

43

Tensor fascia latae

O: iliac crest

I: fascia latae

A: flexes thigh

44

Vastus lateralis

O: lateral femur

I: patella

A: extends knee

45

Vastus medialis

O: medial femur

I: patella

A: extends knee

46

Rectus femoris

O: ilium near acetabulum

I: patella

A: extends knee

47

Vastus intermedius

O: ilium

I: patella

A: extends knee

48

Caudofemoralis

O: caudal vertebrae second and third

I: patella and fascia of knee

A: abducts thigh

49

Gluteus Maximus

O: last sacral vertebra and first caudal vert.

I: great trochanter of femur

A: abducts thigh

50

Gluteus medius

O: ilium and last sacral vert, first caudal vert

I: great trochanter

A: abducts thigh

51

Biceps femoris

O: ischial Tuberosity

I: patella, tibia and fascia of lower limb

A: abducts thigh and lower limb

52

Gastrocnemius

O: distal femur

I: calcaneus

A: extends foot

53

Soleus

O: fibula

I: calcaneus

A: extends foot

54

Deltoid muscles

1. Clavobrachialis

2. Acromiodeltoid

3. Spinodeltoid

55

Quadriceps femoris

1. Vastus lateralis

2. Rectus femoris

3. Vastus medialis

4. Vastus intermedius

56

Hamstrings

1. Semimembranosus

2. Semitendinosus

3. Biceps femoris