Cat Muscles Atusa

Front 1

Back 1

Name: Trapezius
O: Occipital bone, spines of C7 and all Thoracic vertebrae
I: spine and acromion of scapula, lateral clavicle
A: Extends, elevates, rotates and retracts scapula; secondary: extends head

Front 2

What is the name of muscle #2?

Back 2

N: Latissimus Dorsi
O: Via thoracolumbar fascia, the lower 6 thoracic vertebrae, lumbar vertebrae, iliac crest
I: intertubercular sulcus of humerus
A: Extends, adducts and medially rotates arm

Front 3

Back 3

Name: Supraspinatus
O: supraspinous fossa of scapula
I: greater tubercle of the humerus
A: Abducts and stabilizes humerus

Front 4

Back 4

N: Infraspinatus
O: infraspinous fossa
I: greater tubercle of the humerus
A: Lateral rotation of humerus

Front 5

Back 5

Name: Teres Major
O: Posterior surface of inferior angle of scapula
I: Lesser tubercle of humerus
A. Synergist to latissimus dorsi (extends, adducts and medially rotates arm)

Front 6

Back 6

Name: Teres Minor (synergist to infrasinatus)
O: Lateral border of scapula
I: Greater tubercle of humerus
A: Lateral rotation of humerus

Front 7

#4

Back 7

#4
N: Subscapularis
O: Subscapular fossa of scapula
I: lesser tubercle of humerus
A: medial rotation of humerus, stabilizes shoulder joint

Front 8

#1?

Back 8

#1

N: Rhomboids (major and minor)
O: spinous process of C7-T5
I: medial border of scapula
A: Stabilize scapula

Front 9

Back 9

N: Pectoralis Major
O: clavicle, sternum, costal cartilages
I: greater tubercle of humerus
A: Flexes, adducts and medially rotates arm

Front 10

(#3)

Back 10

#3
N: Serratus anterior
O: Ribs 1-8
I: anterior aspect of medial (vertebral)border of scapula
A: Protracts and rotates scapula superiorly and laterally ("Boxer's muscle")

Front 11

Back 11

N: Deltoid
O: clavicle, acromion and scapular spine
I: deltoid tuberosity of humerus
A: abducts arm

Front 12

Back 12

N: Biceps Brachii
O: coracoid process, supraglenoid tubercle
I: radial tuberosity
A: flexes elbow, supinates forearm

Front 13

Back 13

#2
N: Brachialis
O: distal anterior humerus
I: coronoid process of ulna
A: flexes forearm

Front 14

Back 14

N: Triceps Brachii
O: Infraglenoid tubercle of scapula, posterior humerus
I: Olecranon process of the ulna
A: Extends forearm

Front 15

#13

Back 15

#13
N: Pronator teres
O: medial epicondyle of humerus
I: Lateral radius
A: Pronates and flexes forearm

Front 16

#7

Back 16

#7
N: Flexor carpi radialis
O: medial epicondyle of humerus
I: Base of the 2nd and 3rd metacarpals- tendon easily seen to guid taking pulse of radial artery
A: Flexes wrist; abducts hand

Front 17

#9

Back 17

#9
N: Palmaris Longus
O: medial epicondyle of humerus
I: palmar aponeurosis
A: Tenses skin and facia of palm; weak flexor of wrist

Front 18

#8

Back 18

#8
N: Flexor carpi ulnaris
O: medial epicondyle of humerus
I: pisiform and hamate and fifth metacarpal
A: flexes wrist, adductshand

Front 19

#2

Back 19

#2
N; Brachioradialis
O: lateral supracondylar ridge
I: styloid process of radius
A: flexes forearm

Front 20

#6

Back 20

#6
N: Extensor carpi radialis (longus & brevis)
O: supracondylar ridge and lateral epicondyle of humerus
I: Base of 2nd and 3rd metacarpal
A: extends and abducts the wrist

Front 21

Back 21

N: Extensor digitorum communis
O: lateral epicondyle of the humerus
I: Posterior surfaces of distal phalanges of digits 2-5
A; Extends fingers and wrist, abducts fingers

Front 22

Back 22

N extensor “digiti” minimi (“lateralis” in cat)
A extends 5th digit

Front 23

Back 23

N: Extensor carpi ulnaris
O: lateral epicondyle of humerus
I: 5th metacarpal
A: Extends and adducts wrist

Front 24

#6 (Deep Muscle 1/3)

Back 24

abductor pollicis longus m. (6).
N Abductor pollicis longus
A Abducts and extends thumb

Front 25

Deep group

Back 25

Deep muscles:
1)
N Abductor pollicis longus
A Abducts and extends thumb

2)N Extensor pollicis brevis
A Extends thumb

3)N Extensor pollicis longus
A extends thumb

Front 26

green tape

Back 26

Frontalis (green tape)

N Frontal belly
A raises eyebrows

*Special Note: Epicranius:
Bipartite muscle consisting of a frontal belly and occipital belly attached by galea aponeurotica (an aponeurosis, which is a sheet of connective tissue; a flat tendon)

Front 27

Back 27

N Orbicularis oris
A Closes and puckers lips; kissing/whistling muscle

Front 28

#77

Back 28

#77
N Orbicularis oris
A Closes and puckers lips; kissing/whistling muscle

Front 29

Back 29

N Orbicularis oculi
A Closes eye

Front 30

#81

Back 30

#81
N Risorius
A Draws corner of lip laterally; synergist to zygomaticus

Front 31

Back 31

N Levator labii superioris muscle
A Raises upper lip

Front 32

Back 32

N Zygomaticus (major and minor)
A raises corners of mouth, smiling muscle

Front 33

Back 33

N Buccinator
A Compresses cheek (for whistling and sucking)

Front 34

Back 34

N Temporalis
A Closes jaw

Front 35

Back 35

N Masseter
O zygomatic arch
I angle and ramus of mandible
A Prime mover of jaw closure; elevates mandible

Front 36

Top arrows

Back 36

Superior rectus Top arrows

N Superior rectus
A Rotates eyeball superiorly and medially (elevates and adducts)

Front 37

bottom arrow

Back 37

Inferior rectus(bottom arrow)

N Inferior rectus
A Rotates eyeball inferiorly and medially (depresses and adducts)

Front 38

Right Arrow

Back 38

Rt Arrow
N Medial rectus
A Rotates eyeball medially (adducts)

Front 39

Rt Eye

Back 39

N Lateral rectus
A Rotates eyeball laterally (abducts)

Front 40

Back 40

Superior oblique(arrow pointing to white ligament)

N Superior oblique
A Rotates eyeball inferiorly and laterally (depresses and abducts)

Front 41

bottom arrow

Back 41

Inferior Oblique

N Inferior oblique
A Rotates eyeball superiorly and laterally (elevates and abducts)

Front 42

#6

Back 42

#6
N: Sternothyroid
O: manubrium
I: thyroid cartilage
A: Pulls larynx and hyoid bone inferiorly (depresses)

Front 43

#5

Back 43

#5
N: Sternohyoid
O: manubrium and clavicle
I: hyoid bone
A: Depresses hyoid and larynx

Front 44

#7

Back 44

#7
N Thyrohyoid
O thyroid cartilage
I hyoid
A Depresses hyoid or elevates larynx

Front 45

#1

Back 45

#1
N: Digastric “two bellies”
O: Mandible and mastoid process
I: By a connective tissue loop to hyoid bone
A: Open mouth and depress mandible

Front 46

#2

Back 46

#2
N Mylohyoid
O Mandible
I Hyoid
A Elevates hyoid

Front 47

Back 47

Name:
* Sternocleidomastoid

Origin:
• Clavicle (medial)
• Sternum (manubrium)

Insertion:
• Mastoid process

Action:
• Unilateral: rotates head to opposite shoulder
rotation of head so face turns to opposite side
• Bilateral: flexion of head

When incluced with N Erector Spinae- iliocostalis, longissimus, and spinalis muscles- Muscles of the Neck and Vertebral Column: Head Movements and Trunk Extension

Front 48

Back 48

N Psoas major
O lumbar vertebrae
I lesser trochanter of the femur
A Prime mover in thigh flexion and in flexing trunk

Front 49

Back 49

N Iliacus
O Iliac fossa
I lesser trochanter of the femur
A Prime mover in thigh flexion and in flexing trunk

Front 50

Back 50

N Sartorius
O anterior superior iliac spine
I tibia
A Flexes, abducts and laterally rotates thigh; flexes knee

Front 51

#10

Back 51

N Adductor longus
O pubis near pubic symphysis
I linea aspera
A Adducts, flexes and medially rotates thigh

Front 52

#9

Back 52

#9
N Adductor MAGNUS (= "adductor FEMORIS" in cats)
O ischium and pubis
I linea aspera of femur
A Adducts, flexes and medially rotates thigh

Front 53

#11

Back 53

#11
N Pectineus
O pubis
I posterior femur
A Adducts, flexes and medially rotates thigh

Front 54

#6

Back 54

N: Gracilis
O: pubis
I: medial tibia
A: flexes knee and adducts and medial rotates thigh

Front 55

What is the group name for Anterior Muscles of Thigh?

What muscles is this group composed of?

Back 55

Anterior Muscles of Thigh - Quadriceps femoris = Group name (composed of 4 muscles)

1. Rectus femoris
2. Vastus lateralis
3. Vastus medialis
4. Vastus intermedius

Front 56

#4

Back 56

#4
N Rectus femoris
O anterior inferior iliac spine
I patella and tibial tuberosity
A Extends knee and flexes thigh at hip

Front 57

#2

Back 57

#2
N Vastus lateralis
O Greater trochanter
I patella and tibial tuberosity
A Extends knee

Front 58

#3

Back 58

#3
N Vastus medialis
O linea aspera
I patella and tibial tuberosity
A Extends knee

Front 59

Back 59

N Vastus intermedius
O proximal femur
I patella and tibial tuberosity
A Extends knee

Front 60

Back 60

N Tensor fasciae latae
O iliac crest and anterior superior iliac spine
I iliotibial tract-The fascia lata that ensheathes all the muscles of the thigh
A Steadies trunk on thigh

Front 61

#3

Back 61

#3
N Gluteus maximus
O ilium, sacrum, coccyx
I gluteal tuberosity of femur
A Major extensor of thigh

Front 62

#4

Back 62

#4
N Gluteus medius
O ilium
I greater trochanter of the femur
A Abduction and medial thigh rotation

Front 63

#8

Back 63

#8
N Semimembranosus
O ischial tuberosity
I medial condyle of tibia
A Extends thigh, flexes knee

Front 64

#7

Back 64

#7
N Semitendinosus
O ischial tuberosity
I medial aspect of proximal tibia
A Extends thigh, flexes knee

Front 65

#1

Back 65

#1
N Biceps femoris
O ischial tuberosity and femur
I fibula and tibia
A Extends thigh, flexes knee

Front 66

#1

Back 66

#1
N Gastrocnemius
O medial and lateral condyles of femur
I via achilles tendon onto calcaneus
A plantarflexes foot; flexes lower leg

Front 67

#2

Back 67

#2
N Soleus
O head of fibula and tibia
I calcaneal tendon onto calcaneous
A Plantarflexes foot

Front 68

#3

Back 68

#3
N: Tibialis anterior
O: lateral condyle and tibial shaft
I: medial cuneiform and first metatarsals
A: Prime mover of dorsiflexion

Front 69

Back 69

N Peroneus (fibularis) longus
O head of fibula
I First metatarsal and medial cuneiform
A Plantarflexion and foot eversion

Front 70

#11

Back 70

#11
N External intercostals
A raises ribs for inspiration

FYI: Deep Muscles of the Thorax: Breathing w/ Internal intercostals & Diaphragm

Front 71

Back 71

N Internal intercostals
A Depresses ribs for forced expiration

FYI: this muscle along with the external intercostals & the Diaphragm are the breathing muscles

Front 72

Back 72

N Diaphragm (innervated by phrenic nerve: " C3, C4, C5- keeps the
diaphragm alive")
O cartilages of lowest ribs, lumbar vertebrae
I central tendon
A Prime muscle of inspiration (flattens on contraction)