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FELINE. FACIAL MUSCLES. Muscles of the lips and cheeks Muscles of the nose Muscles of the eyelids Muscles of the external ear. MUSCLES OF THE LIPS & CHEEKS. Muscles of the eyelids. AURICULAR MUSCLES. M. Cervicoauricularis superficialis. M. Cervicoscutularis (3). - PowerPoint PPT Presentation
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FELINE
FACIAL MUSCLES
Muscles of the lips and cheeksMuscles of the noseMuscles of the eyelidsMuscles of the external ear
MUSCLES OF THE LIPS & CHEEKSNAME INNERVATION
ORIGIN INSERTION FUNCTION
Orbicular m. of the mouthFacial nerve, buccolabial branches
Circular muscles Closes the opening of the mouth(rima oris)
Incisive m.Facial nerve, buccolabial branches-upper incisive m.-lower incisive m.
Alveolar arch Orbicular m. of the mouth
-Raises the upper lip-Pulls lower lip down
Nasolabial levator m.Facial nerve,zygomatic branches
Forehead, lateral surface of the nasal & maxillary bones
Orbicular m. of the mouth near the nasal aperture
Raises the upper lip & widens opening of nostrils
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Levator muscles of the upper lip(levator labii superiolis)Facial nerves,buccolabial branches
Variably on the maxillary bones(Rostral to infraorbital foramen)
Upper lip Raises & draws back upper lip & nasal plane
Canine muscleFacial nerves,buccolabial branches
Rostrally on the facial crest & on the facial tuberosity
Upper lip near the nasal aperture
Widens external nostrils & draws back upper lip
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Depressor muscles of the upper lipFacial nerves,buccolabial branches
Facial tuberosity Upper lip Pulls upper lip down
Depressor muscles lower lipFacial nerve,buccolabial branches
Maxillary tuberosity Lower lip Pulls lower lip down
Levator muscles of chinFacial nerve & buccolabial branches
On the lateral surface of the alveolar border of the mandible
Radiates into chin Movement of the chin
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Zygomatic musclesFacial nerve ,zygomatic branches
Zygomatic bone Orbicular oris m. of the mouth
Draws back the angle of the mouth
Buccinator musclesFacial nerve , buccolabial
Rostral border of messeter muscle
Angle of the mouth •Narrows cheek pouch• lateral boundary of oral cavity• interwoven rostrally with the obicularis
muscle fibres
Muscles of the eyelidsNAME INNERVATION
ORIGIN INSERTION FUNCTION
Orbicular m. of the eyeFacial n., zygomatic branch
Circular m. of the eye
Closes the palpebral fissure
Levator m. of the medial angle of the eyeFacial n., zygomatic branch
Nasofrontal fascia Medial on the eye lid
Elevate of the medial part of the eye lid
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Retractor m. of the lateral angle of the eyeFacial n., zygomatic branch
Temporal fascia Lateral palpebral angle
Retractor of the lateral palpebral angle
Malar m.Facial n., buccolabial branch
Facial fascia Lower eye lid Draws lower eye lid downward
AURICULAR MUSCLESNAME INNERVATION
ORIGIN INSERTION FUNCTION
M. Cervicoauricularis superficialis
Dorsal median raphe of the neck
Dorsal (convex) surface of the auricular cartilage
Long elevator muscle of the ear
M. cervicoscutularis Dorsal median raphe of the neck
Caudomedial part of scutiform cartilage
Elevates the ear & tenses the scutiform cartilage
Mm. cervicoauricularis
External sagittal crest
Lateral border of the auricular cartilage
Turns the opening (conchal fissure) of the auricular cartilage caudolaterally
M. Cervicoauricularis superficialis
M. Cervicoscutularis (3)
Mm. cervicoauricularis
NAME INNERVATION
ORIGIN INSERTION FUNCTION
M. occipitalis External sagittal crest
Superficial fascia of the head
Draws the scutiform cartilage caudomedially
M. interscutularis Transverse fibres passing between the 2 scutiform cartilages
Draws the scutiform cartilages medially
M. frontoscutularis Rostral continuation of the m. interscutularis
Draws the scutiform cartilages rostromedially
M. Interscutularis (6)
M. frontoscutularis
NAME INNERVATION
ORIGIN INSERTION FUNCTION
M. Scutuloauricularis superfacialis
Scutiform cartilage Rostral border of the auricular cartilage
Turns the auricular cartilage so that its opening (conchal fissure) faces rostromedially, erects the ear
M. parotidoauricularis
Parotid fascia and superfacial fascia of the cranial neck
Ventrolateral at the base of the auricular cartilage
Draws the ear down, lays the ear ‘back’
M. mandibuloauricularis
Caudal margin of the ramus of the mendible ventral to the condyle
Ventral at the base of the auricular cartilage
M. Scutuloauricularis superfacialis & M. parotidoauricularis
MANDIBULAR MUSCLES
Muscles of masticationSuperficial m. of the mandibular space
Muscles of masticationNAME INNERVATION
ORIGIN INSERTION FUNCTION
Masseter m.Masseteric n.of the mandibular n.
Facial crest & zygomatic arch
Lateral surface of the mandible & intermandubular region
Raises & draws mandible sidewards
Lateral pterygoid m.Branch to lateral pterygoid from the mandibular n.
Pterygoid process of the sphenoid bone
Medial surface of the mandible & the condylar process
Raises, pushes & draws forward the mandible
Medial pterygoid m.Branch to medial pterygoid from the mandibular n.
Pterygoid process of the sphenoid, pterygoid bone & the perpendicular plate
Medial surface of the mandible
Raises mandible
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Temporal m.Deep temporal n. from the mandibular n.
Temporal fossa Coronoid process of the mandible
Raises mandible in order to close the mouth
Superficial m. of the mandibular space
NAME INNERVATION ORIGIN INSERTION FUNCTION
Digastric m.Rostral part:Nerve to mylohyoid from the mandibular n.Caudal part:Digastric branch from the facial n.
Paracondylar process
Medial of the body on the mandible
Draws mandible downwards, opens the mouth
Occipitomandibular portionDigastric branch from the facial n.
Paracondylar process
Angle of the mandible
Opens the mouth
Mylohyoid m.Branch to mylohyoid from the mandibular n.
Mylohyoid line Median raphe Supports & lifts the tongue
MUSCLES OF THE UPPER BACK, SHOULDER, & BACK OF NECK
NAME INNERVATION
ORIGIN INSERTION ACTION
LATISSIMUS DORSIA superficial ,flat,triangular muscle extending from the middorsal line to the medial surface of the humerus; a portion of this muscle is covered dorsally by a smaller triangular muscle, the spinotrapezius
Neural spines of fourth thoracic to sixth lumbar vertebrae and lumbodorsal fascia
Medial surface of humerus
Retracts humerus dorsally and posterior
SpinotapeziusA triangular superficisial muscle overlying the latissimus dorsi in the middle dorsal region
Spinous processes of thoracic vertebrae and spines of cervical vertebrae
Fascia of scapula Draws scapula medially and posteriorly toward the tail
AcromiotrapeziusA flat superficial muscles covering the scapula
Spinous process of axis to third thoracic vertebrae
Metacromion process and spine of scapula
Draws scapula medially
Name of innervation
origin insertion function
ClavotrapeziusA flat superficial muscle on the dorsal surface of the neck
Superficial nuchal line and median dorsal line of neck
clavicle Draws clavicle dorsally and anteriorly
Levator scapulae ventralisA longitudinal band of muscle on the side of the neck : between the clavortrapezius and acromitrapezius
Transverse occipital bone and process of atlas
Metacromion process of scapula spine
Draws scapula cranially
SupraspinatusA thick muscle occupying the supraspinous fossa of the scapula : lies deep to the acromiotrapezius
Supraspinous fossa of scapula
Greater tubercle of humerus
Draws humerus cranially
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
InfraspinatusA muscle occupying the infraspinous fossa of the scapula : lies deep to acromiotrapezius
Infraspinous of scapula
Greater tubercle of humerus
Rotates humerus laterally
ClavodeltoidA superficial muscle of the shoulder : continoues with the clavotrapezius at its proximal end : extend into the arm
Clavotrapezius and clavicle
Proximal end of ulna Flexes forearms
AcromiodeltoidA muscle posterior to the clavodeltoid : its distal portion lies under the clavodeltoid
Acromion process of scapula
Deltoid ridge of humerus
Raises and rotates humerus with spinoldeltoid
NAME INNERVATION ORIGIN INSERTION FUNCTION
SpinodeltoidA band of m. posterior to the acromiodeltoid & levator scapulae ventralis
Scapular spine Deltoid ridge of humerus
Raises & rotates humerus
RhomboideusA narrow, elongated m. located beneath the clavo- & acromiotrapezius; seperated into 2 parts, capitis(cranial portion) & caudalis(caudal portion)
Cervical spines to midthoracic spines
Medial border of scapula
Draws the scapula medially toward the vertebral column
MUSCLES OF THE ABDOMINAL WALLNAME INNERVATION
ORIGIN INSERTION FUNCTION
External obliqueA superficial sheet of m. forming the outermost m. of the abdominal wall
Lumbodorsal fascia & posterior ribs
Linea alba by way of aponeurosis
Consticts abdomen
Internal obliqueA sheeetlike m. immediately beneath the external oblique; its m. fibers run in a diff. direction from those of external oblique
Lumbodorsal fascia & border of pelvic girdle
Aponeurosis to linea alba
Compresses abdomen
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Transversus abdominisSheet of m. beneath the fleshy portion of the internal oblique; fibers run in a transverse direction
Similar to internal oblique
Similar to internal oblique
Compresses abdomen
Rectus abdominisA superficial longitudinal band of m. lying immediately lateral to the midventral line of abdomen
Anterior portion of pubic symphysis
Sternum & costal cartilages
Retracts ribs & sternum & compresses abdomen
MUSCLES OF THE UPPER ARMNAME INNERVATION
ORIGIN INSERTION FUNCTION
EpitrochlearisA flat superficial m. on the medial side of humerus
Lateral surface of latissimus dorsi
Olecranon process of ulna
Extends forearm
Biceps brachiiA m. lying on the ventromedial surface of the humerus; it can be more easily seen by transecting & reflecting the pectoralis muscles near the humerus; has medial & lateral heads
Glenoid fossa of scapula
Radius Flexes forearm
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Triceps brachii longusA muscle covering the posterior surface of the humerus
Axillary border of scapula
Olecranon process of ulna
Extends forearm
Triceps brachii lateralisA band of m. covering the lateral surface of the humerus
Greater tuberosity of humerus
Olecranon process of ulna
Extends forearm
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Triceps brachii medialisA m. lying deep to the triceps brachii lateralis (transect the triceps lateralis to see the triceps medialis)
Shaft of humerus Olecranon process of ulna
Extends forearm
BrachialisA m. lying along the outer lateral surface of the humerus; it can be exposed by transecting & reflecting the lateral head of the triceps
Lateral surface of humerus
Ulna Flexes forearm
MUSCLE OF FOREARM, LATERAL SURFACENAME OF INNERVATION
ORIGIN INSERTION FUNCTION
BrachiaoradialisThe most superior ribbonlike muscle of the forearm group
Middle of the humerus of dorsal surface
Distal end of radius Supinator of hand
Extensor carpi radialisNarrow band of muscle that lies superior to the extensor digitorum communis ; has 2 heads-short and long
Middle of humerus Attachment by means of tendon to second and third metacarpals
Extends hand
22. externsor carpi radialis longus 23. extensor carpi radialis brevis 24. extensor digitorum communis 25. extensor digitorum lateralis 26. extensor carpi ulnaris 27. radial nerve 28. extensor digitorum communis tendons 29. extensor digitorum lateralis tendons
16. triceps brachii (long head) 17. triceps brachii (lateral head) 18. triceps brachii (medial head) 19. brachialis 20. epitrochlearis21. brachioradialis 22. externsor carpi radialis longus 23. extensor carpi radialis brevis 24. extensor digitorum communis
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
Extensor digitorum communisA thin muscle that lies superior to the extensor digitorum lateralis
Latyeral surface of humerus
Attachment by means of tendons to third and fourth digits
Extends third and fourth digits
Extensor digitorum lateralisA long wedge-shaped muscle that lies superior to the extensor carpi ulnaris
Lateral surface of humerus
Attachment by means of tendons to third to fourth digits
Extends third and fourth
22. externsor carpi radialis longus 23. extensor carpi radialis brevis 24. extensor digitorum communis 25. extensor digitorum lateralis 26. extensor carpi ulnaris 27. radial nerve 28. extensor digitorum communis tendons 29. extensor digitorum lateralis tendons
16. triceps brachii (long head) 17. triceps brachii (lateral head) 18. triceps brachii (medial head) 19. brachialis 20. epitrochlearis21. brachioradialis 22. externsor carpi radialis longus 23. extensor carpi radialis brevis 24. extensor digitorum communis
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
Extensor carpi ulnarisA long muscle that form the most inferior portion of the lateral forearm
Semilunar notch and lateral epicondyle of humerus
Proximal portion of fifth metacarpal
Extend fifth digit and ulna side of wrist
22. externsor carpi radialis longus 23. extensor carpi radialis brevis 24. extensor digitorum communis 25. extensor digitorum lateralis 26. extensor carpi ulnaris 27. radial nerve 28. extensor digitorum communis tendons 29. extensor digitorum lateralis tendons
16. triceps brachii (long head) 17. triceps brachii (lateral head) 18. triceps brachii (medial head) 19. brachialis 20. epitrochlearis21. brachioradialis 22. externsor carpi radialis longus 23. extensor carpi radialis brevis 24. extensor digitorum communis
MUSCLE OF FOREARM, MEDIAL SURFACE
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
Protonator teresA short wedge-shaped muscle that lies above the flexorCarpi radialis
Medial epicondyle of humerus
Medial surface of radius
Pronates hand (rotates radius)
Flexor carpi radialisLarge narrow muscle that lies above the palmaris longus
Medial epicondyle of humerus
Second and thiord metacarpals
Flexes second and third metacarpals
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
Palmaris longusLargest of the medial forearm group: lies above the flexor carpi ulnaris
Medial epicondyle of humerus
Attachment by means of tendons to all digits
Flexes digits
Flexor carpi ulnarisA large band of muscle that covers the medial surface of the ulna
To heads-medial epicondyle of humerus and olecranon process
Pisiform bone of wrist
Flexes digits
MUSCLE OF THE THIGH, DORSAL ASPECT NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
Tensor fasciae lataeA triangular muscle on the lateral side of the hip medial to the tough white fascias(fascia lata) covering the anterior portion of the thigh
Illium and facia Fascia lata Thighens fascia lata, extends thigh
Biceps fimorisA large thick muscle covering the lateral surface of the thigh, caudal to the tensor fascia latae: one of the hamstring muscles
Tuberosity of ischium
Patella to shaft the tibia
Abducts thigh and flexes shank
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
CaudofemoralisA small muscle cranial to the dorsal potion of the biceps femors
Tranverse processes of second and third caudal vertebrae
Patella Abducts thigh, extend shank
Gluteus maximusA small muscle cranial to the caudofemoralis
Fascia nad transverse processes of last sacral and first caudal vertebrae
Pascia lata and slightly on greater trochanter
Abducts thigh
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
Gluteus mediusA thick muscle dorsal to the tensor fasciae latae
Crest and lateral surface of illium
Greater trochanter Abducts thigh
MUSCLE OF THE THIGH, VENTRAL ASPECT
NAME OF INNERVATION
ORIGIN INSERTION FUNCTION
SartoriusA flat superficial band of muscle covering the lateral ventral portion of the thigh
Crest and ventral border of illium
Proximal end of tibia
Adducts and rotates thigh, extend shank
GracilisA flat superficial band of muscle covering the medial ventral portion of the thigh
Pubic symphysis and ischium
Aponeorosis to tibia
Adducts and retracts leg
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Vastus lateralisThis large m. can be seen better from the dorsal aspect; it is covered by the fascia lata of the tensor fasciae latae m.
Greater trochanter & shaft of femur
Patella & patellar ligament
Extends shank
Rectus femorisAn elongated m. bordered laterally by the vastus lateralis & medially by the vastus medialis
Ilium anterior to acetabulum
Patella & patellar ligament
Extends shank
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Vastus intermediusA flat m. deep to the rectus femoris
Shaft of femur Patella & patellar ligament
Extends shank
Vastus medialisA band of m. on the medial portion of the thigh, deep to the sartorius
Femur Patella Extends shank
Adductor longusA narrow m. band lying lateral to the adductor femoris
Pubis Femur Adducts thigh
NAME INNERVATION ORIGIN INSERTION FUNCTION
Adductor femorisA m. deep to the gracilis, proximal to the trunk of the cat
Inferior rami of pubis & ischium
Shaft of femur Adducts thigh
SemimembranosusA large thick m. deep to the gracilis, caudal to the adductor femoris; one of the hamstring m.
Ischium Medial epicondyle of femur
Extends thigh
SemitendinosusA stout band of m. caudal to the semimembranosus; more easily seen from the ventral surface; 1 of the hamstring m.
Ischial tuberosity Proximal end of tibia
Flexes shank
MUSCLES OF THE LOWER LEGNAME INNERVATION
ORIGIN INSERTION FUNCTION
Tibialis anteriorA thin m. lying along the lateral border of the tibia
Proximal portion of tibia
First metatarsal Flexes foot
Flexor digitorum longusAn elongated m. running medial to the tibialis anterior
Posterior surface of tibial shaft below popliteal line
Distal phalanx of toes
Flexes & inverts foot
Extensor digitorum longusA flat spindle shaped m. lying ventrolateral to the tibialis anterior m.
Tibia & fibula All 4 digits Extends phalanges
NAME INNERVATION
ORIGIN INSERTION FUNCTION
Peroneus(fibularis) longusA slender cylinder shape muscles located on the lateral surface of the leg
Head of fibula,lateral condyle of tibia
Metatarsals and digit
Extends foot and flexes phalenges
GastrocnemiusA large muscle lateral to the tibia
Caudal aspect of femur proximal to the condyles(two sesamoid bones included)
Tendon of Achilles on calceneus tuber
Flexes knee,extends foot
Soleus•a flattened muscle lying deep to the gastrocnemius• insignificant in other animals
Lateral portion of fibula
Tendon of Achilles on calcaneus tuber
Plantar flexes foot
Lower Leg (Lateral)
1. Tibialis Anterior 7. Gastrocnemius
2. Extensor Digitorm Longus 8. Biceps Femoris
3. Peroneus Longus 9. Semitendinosus
4. Peroneus Brevis 10. Semimembranosus
5. Peroneus Tertius 11. Adductor Femoris
6. Soleus 12. Vastus Lateralis
Lower Leg (Medial)
1. Gastrocnemius2. Plantaris3. Soleus4. Flexor Digitorum Longus5. Tibia (Bone)6. Tibialis Anterior7. Calcaneus Tendon (Achilles Tendon)
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