Muscles

Question 1

Muscles of the head

Answer 1

digastricus
Masseter
Temporalis

Question 2

Muscles of the
Abdomin

Answer 2

External obliques
Internal obliques
Transversus Abdominis
Rectus Abdominis

Question 3

Muscles of the FORELIMB
Extrinsic?
Intrinsic?
Elbow?
Carpus?
Digits?

Answer 3

Trapezii
Pectorals
Latissimus Dorsi
Brachiocephalicus
Supraspinatus
Infraspinatus
Triceps Brachii
Biceps Brachii
Brachialis
Carpal Extensors (2)
Digital Extensors (2)
Carpal Flexors (2)
Digital Flexors (2)

Question 4

Muscles of the HINDLIMB
Extrinsic
Lower hindlimb

Answer 4

Sublumbar hypaxial
Gluteals
Biceps Femoris (Hamstring)
Semitendinosus (Hamstring)
Semimembranosus (Hamstring)
Quadriceps Femoris
Pectineus
Sartorius
Gracilis
Gastrocnemius
Tibialis
Digital Extensors (3)
Digital Flexors (2)

Question 5

Digastricus
origin
insertion
action

Answer 5

O: Mandible
I: Jugular processes
A: Moves jaw from side
to side

Question 6

Masseter
origin
insertion
action

Answer 6

O: zygomatic arch
I: mandible
A: close the jaw

Question 7

Temporalis
origin
insertion
action

Answer 7

O:skull
I: Mandible
A: closes jaw

Question 8

Tendons

Answer 8

Connect muscle to
bone

Question 9

Ligaments

Answer 9

Connect one bone to
another bone

Question 10

Structure Of Skeletal Muscle

Answer 10

Myofibre
Endomysium
Perimysium
Epimysium

Question 11

sarcolemma

Answer 11

Skeletal muscle cells membrane

Question 12

sarcoplasm

Answer 12

the cytoplasm of skeletal muscles cell.

Question 13

Structure Of Muscle Fibre

Answer 13

Each myofibre is made up of
myofibrils
* Unit of contraction
* Actin – thin filaments
* Myosin – thick filaments
striped’ appearance

Question 14

Slow twitch (Type 1)

Answer 14

Burn oxygen very efficiently

Question 15

Fast twitch (Type 2)

Answer 15

Burn fuel anaerobically

Question 16

ratchet mechanism

Answer 16

Muscle contraction: repeated pulling of the Actin over the myosin

Question 17

Muscle Contraction Types

Answer 17

Isotonic = Tone
Isometric = Shortening the muscle

Question 18

Smooth muscle

Answer 18

involuntary muscle

Question 19

Antagonistic
pairing

Answer 19

Muscles that counteract
each other

Question 20

Aponeurosis?

Answer 20

Broad sheet of tendon

Question 21

Extrinsic muscles

Answer 21

Muscles that insert onto the axial skeleton

Question 22

Intrinsic muscle

Answer 22

originates and inserts on same structure

Question 23

Epaxial muscles

Answer 23

Dorsal to the transverse processes of the vertebrae

Question 24

Hypaxial muscles

Answer 24

Ventral to the transverse processes of the vertebrae

Question 25

External intercostal

Answer 25

Most superficial Run caudo-ventrally Involved in inspiration

Question 26

Internal intercostal

Answer 26

Next layer Run cranio-ventrally

Question 27

Diaphragm attaches to?

Answer 27

Sternum, Rib, Lumbar vertebrae

Question 28

External Abdominal Oblique

Answer 28

Most superficial O: ribs & lumbar I: Linea alba A:protection and support

Question 29

Internal Abdominal Oblique inserts onto?

Answer 29

I: Linea Alba

Question 30

Transverse Abdominis inserts onto?

Answer 30

I: linea Alba

Question 31

Rectus abdominus

Answer 31

O: 1st rib & sternum I: Pubis, pre-pubic tendon

Question 32

Linea Alba

Answer 32

O: xiphoid I: Pubic region

Question 33

Trapezius

Answer 33

O: Vertebrae I: scapula A: Abductor of the forelimb

Question 34

Pectorals

Answer 34

O: ribs & sternum I: humerus A: adducts the limb

Question 35

Latissimus dorsi

Answer 35

O: vertebrae I: humerus A:Flexes shoulder/ Retracts the limb

Question 36

Brachiocephalicus

Answer 36

O: skull I: cranial humerus A:Limb on ground Bends the neck laterally

Question 37

Supraspinatus

Answer 37

O:Supraspinatous fossa I: Humerus A: Extends shoulder

Question 38

Infraspinatus

Answer 38

O: Infraspinatous fossa * Insertion – Greater tubercle of the I: Humerus A: Flexes shoulder

Question 39

Triceps brachii

Answer 39

O: 3 heads humerus 4th scapula I: olecranon of ulna A: extends the elbow

Question 40

Biceps brachii

Answer 40

O: scapula I: Radius and ulna A: Flexes the elbow

Question 41

Brachialis

Answer 41

O: Humerus I: radius and ulna A: Flexes the elbow

Question 42

Carpal extensors

Answer 42

O: Humerus I: Carpus * cranial and lateral aspect of limb *

Question 43

Digital extensors

Answer 43

O: Humerus I: 3rd phalanx * cranial aspect of limb *

Question 44

Carpal flexors

Answer 44

O: Carpus I: Palmer

Question 45

Digital flexors

Answer 45

Superficial digital flexor * Inserts on 2nd phalanx Deep digital flexor * Inserts on the 3rd phalanx

Question 46

Sublumbar hypaxial muscle

Answer 46

O:Ventral vertebral column I: pelvis

Question 47

Gluteals

Answer 47

O: pelvic girdle I: femur A:extensors of hip

Question 48

Biceps femoris (HAMSTRING)

Answer 48

O: pelvic girdle I: Calcaneus A: Extends hip Flexes stifle Extends hock

Question 49

Semitendinosus (HAMSTRING)

Answer 49

O: pelvis I: tibia & calcaneus A: Extends hip. Flexes stifle Extends hock

Question 50

Semimembranosus (HAMSTRING)

Answer 50

O: pelvis I: femur and tibia A: Extends hip. Flexes stifle

Question 51

Quadriceps femoris (HAMSTRING)

Answer 51

O: 3-proximal femur 1- ilium I: tibia A: stifle extension

Question 52

Pectineus

Answer 52

O: pubis I: Femur A: Adducts

Question 53

Sartorius

Answer 53

O: pelvis I: Cranial tibia A: Adducts

Question 54

Gracilis

Answer 54

Caudal- medial thigh A: Adducts

Question 55

Gastrocnemius

Answer 55

O: femur I: calcaneus A: extends hock and flexes stifle

Question 56

Achilles Tendon

Answer 56

* caudal aspect of the leg to hock * 3 tendons I: calcaneus A: digital felxor

Question 57

Anterior tibialis

Answer 57

O: tibia I: tarsus A: flexes hock and rotates paw medially

Question 58

Digital extensors location

Answer 58

Run down cranial aspect of limb

Question 59

Digital flexors

Answer 59

* Run down plantar aspect of limb * I: 2nd & 3rd phalanx