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Anatomy Review Cat Muscles Written by Eduardo Alvarez & Roberto Martinez Students of Professor Gonsalves’ LACC Anatomy 1 Class.

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Presentation on theme: "Anatomy Review Cat Muscles Written by Eduardo Alvarez & Roberto Martinez Students of Professor Gonsalves’ LACC Anatomy 1 Class."— Presentation transcript:

1 Anatomy Review Cat Muscles Written by Eduardo Alvarez & Roberto Martinez Students of Professor Gonsalves’ LACC Anatomy 1 Class

2 MUSCLES OF MASTICATION

3 Masseter Origin: –Zygomatic Bone Insertion: –Mandible Action: –Elevates Mandible

4 Temporalis Origin: –Temporal Bone Insertion: –Mandible Action: –Elevates and Retracts Mandible

5 Digastric Origin: –Occipital Bone and Mastoid Process Insertion: –Mandible Action: –Depresses Lower Jaw

6 Mylohyoid Origin: –Mandible Insertion: –Hyoid Bone Action: –Raises Floor of Mouth and Pulls Hyoid Forward

7 NECK MUSCLES THAT MOVE THE HEAD

8 Sternomastoid (only in cats) Origin: –Sternum Insertion: –Mastoid Process Action: –Turns and Depresses Head

9 Cleido- mastoid Origin: –Clavicle Insertion: –Mastoid Process Action: –Pulls Head Laterally and Pulls Clavicle Craniad

10 MUSCLES OF HYOID, LAYRNX, & TONGUE

11 Sternohyoid Origin: –First Rib (Intercostal) Insertion: –Hyoid Bone Action: –Pulls Hyoid Caudally, Raises Ribs and Sternum

12 Sternothyroid Origin: –First Rib (Intercostal) Insertion: –Larynx Action: –Pulls Larynx Caudal (down)

13 Thyrohyoid Origin: –Thyroid Cartilage of Larynx Insertion: –Hyoid Bone Action: –Raises Larynx

14 Geniohyoid (deep to Mylohyoid) Origin: –Mandible Insertion: –Hyoid Bone Action: –Pulls Hyoid Craniad (up)

15 MUSCLES THAT ATTACH PECTORAL APPENDAGES TO THE VERTEBRAL COLUMN

16 Trapezius Origin: –Occipital Bone and Cervical and Thoracic Vertebrae Insertion: –Scapula and clavicle Action: –Raises Clavicle, Adducts, Elevates and Depresses Scapula

17 Latissimus Dorsi Origin: –Thoracic and Lumbar Vertebrae Insertion: –Humerus Action: –Pulls Arm Dorsad (back) and Caudad (down)

18 Rhomboideus Capitis Origin: –Lamboidal Ridge Insertion: –Scapula Action: –Pulls Scapula Craniad (up)

19 Rhomboideus Minor Origin: –Thoracic Vertebrae Insertion: –Scapula Action: –Pulls scapula dorsally and medially capitis

20 Rhomboideus Major Origin: –Thoracic Vertebrae Insertion: –Scapula Action: –Pulls Scapula Dorsally (toward back) and Medially (towards midline) capitis

21 Levator Scapulae Ventralis Origin: –Occipital Bone and Atlas (C 1 ) Insertion: –Scapula Action: –Pulls Scapula Craniad (toward head)

22 MUSCLES THAT ATTACH PECTORAL APPENDAGES TO VENTRAL AND BODY WALL

23 Pectoante- brachialis (cat only) Origin: –Sternum Insertion: –Forearm (proximal end) Action: –Adducts Arm

24 Pectoralis Major Origin: –Sternum Insertion: –Humerus Action: –Adducts Arm

25 Pectoralis Minor Origin: –Sternum Insertion: –Humerus Action: –Adducts Arm

26 Xiphi- humeralis (cat only) Origin: –Xiphoid Process Insertion: –Humerus Action: –Adducts Arm

27 Serratus Ventralis Origin: –First 10 Ribs Insertion: –Scapula Action: –Pulls Scapula Forward & Depresses Scapula

28 MUSCLES OF THE SHOULDER

29 (Deltoid) Clavodeltoid Origin: –Clavicle and Clavotrapezius muscle Insertion: –Humerus Action: –Flexes Forearm

30 (Deltoid) Acromio- deltoid Origin: –Scapula Insertion: –Humerus Action: –Flexes Humerus and Rotates it Outward

31 (Deltoid) Spinodeltoid Origin: –Scapula Insertion: –Humerus Action: –Flexes Humerus and Rotates it Outward

32 Supraspinatus Origin: –Scapula Insertion: –Humerus Action: –Extends Humerus

33 Infra- spinatus Origin: –Scapula Insertion: –Humerus Action: –Rotates Humerus Outward Teres major Rhomboideus major

34 Teres Major Origin: –Scapula Insertion: –Humerus Action: –Flexes forearm and Rotates it inward Rhomboideus major

35 Sub- Scapularis Origin: –Scapula Insertion: –Humerus Action: –Pulls Humerus Medially

36 MUSCLES OF UPPER ARM

37 Triceps Brachii Origin: –Long Head: ScapulaLateral Head and Medial Head: Humerus Insertion: –Ulna Action: –Extends Forearm Lateral head Medial head Long head

38 Biceps Brachii Origin: –Scapula Insertion: –Radius Action: –Flexes and Supinates Forearm

39 Brachialis Origin: –Humerus Insertion: –Ulna Action: –Flexes Forearm

40 MUSCLES OF THE TRUNK Thoracic Region

41 External Intercostals Origin: –Caudal border of one rib Insertion: –Crainal border of rib caudad Action: –Raises Rib (Inhalation) Origin: –Cranial border of one rib Insertion: –Caudal border of rib above Action: –Draw Adjacent Ribs Together and Lower Rib Internal Intercostals

42 Extenal Abdominal Oblique Origin: –Last nine Ribs Insertion: –Linea Alba from Sternum to Pubis Action: –Compresses Abdomen

43 Transversus Abdominis Origin: –Costal cartilage of False Ribs, Lumbar Vertabrae, and Ilium Insertion: –Linea Alba Action: –Compresses the Abdomen

44 Extensor dorsi communis Muscle Groups: –Spinalis –Longissimus –Iliocostalis Action: –Extends Vertebral Column

45 MUSCLES OF THE HIP REGION

46 Tensor fascia latae Origin: –Ilium Insertion: –Patella and Tibia Action: –Extends Thigh, Aids in Abduction and Rotation

47 Caudo- femoralis Origin: –2 and 3 Caudal Vertebrae Insertion: –Patella Action: –Abducts Thigh and Extends Shank

48 Gluteus Maximus Origin: –Sacral and Caudal Vertebrae Insertion: –Femur Action: –Abducts Thigh

49 Gluteus Medius Origin: –Sacral and Caudal Vertebrae & Ilium Insertion: –Femur Action: –Abducts Thigh

50 MUSCLES OF THE THIGH Dorsal Femoral Group (Flexors)

51 Biceps Femoris Origin: –Ishium Insertion: –Patella & Tibia Action: –Adducts Thigh, Flexes Shank

52 Semi- membranosus Origin: –Ischium Insertion: –Femur Action: –Extends Thigh

53 Semi- tendinosus Origin: –Ischium Insertion: –Tibia Action: –Flexes Shank

54 MUSCLES OF THE THIGH Ventral Femoral Group (Extensors)

55 Sartorius Origin: –Ilium Insertion: –Patella Action: –Adducts and Rotates Femur, Extends Tibia

56 Quadriceps Rectus femoris Origin: –Ilium Insertion: –Patella Action: –Extends Lower Leg

57 Quadriceps Vastus Lateralis Origin: –Femur Insertion: –Patella Action: –Extends Lower Leg

58 Quadriceps Vastus Medialis Origin: –Femur Insertion: –Patella Action: –Extends Lower Leg

59 MUSCLES OF THE THIGH Medial Femoral Group

60 Gracilis Origin: –Ischium and Pubis Insertion: –Tibia Action: –Adducts Thigh and Pulls Caudad

61 Adductor Longus Origin: –Pubis Insertion: –Femur Action: –Adducts Thigh

62 Adductor Femoris Origin: –Pubis & Ischium Insertion: –Femur Action: –Extends Thigh

63 MUSCLES OF THE LOWER LEG

64 Gastrocnemius Origin: –Femur Insertion: –Calcaneus Action: –Extends Foot

65 Soleus Origin: –Fibula Insertion: –Metatarsals Action: –Extends Foot

66 Tibialis Anterior Origin: –Tibia and Fibula Insertion: –First Metatarsals Action: –Flexes Foot


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