Canine Musculature Flashcards
Origin of Obliquus Capitis Cranialis?
Ventral wing of Atlas (C1)
Insertion of Obliquus Capitis Cranialis?
Base of skull
Nerve supply of Obliquus Capitis Cranialis?
Dorsal branch of C2
Action of Obliquus Capitis Cranialis?
Rotates C1-C2
Origin of Obliquus Capitis Caudalis?
Dorsal wing of Atlas (C1)
Insertion of Obliquus Capitis Caudalis?
Dorsal spine of axis (C2)
Nerve supply of Obliquus Capitis Caudalis?
Dorsal branch of C2
Action of Obliquus Capitis Caudalis?
Rotates C1-C2
Origin of Rectus Capitis Dorsalis?
Spinous process of C2 and arch of C1
Insertion of Rectus Capitis Dorsalis?
Occiput
Nerve supply of Rectus Capitis Dorsalis?
Dorsal branch of C1
Action of Rectus Capitis Dorsalis?
Extends C1-skull
Origin of Rectus Capitis Lateralis?
Wings of C1
Insertion of Rectus Capitis Lateralis?
Jugular process
Nerve supply of Rectus Capitis Lateralis?
Dorsal branch of C1
Action of Rectus Capitis Lateralis?
Latero-flex C1-skull
Origin of Rectus Capitis Ventralis?
Ventral C2
Insertion of Rectus Capitis Ventralis?
Basioccipital bone
Nerve supply of are tuts Capitis Ventralis?
Dorsal branch of C1
Action of Rectus Capitis Ventralis?
Ventro-flex C1-skull
Origin of Splenius?
Spinous processes T3-5 via thoracolumbar fasci; nuchal ligament
Insertion of Splenius?
Nuchal crest, mastoid process, transverse processes C2-5
Nerve supply of Splenius?
Dorsal branch of Cervical and Thoracic segmental nerve
3 parts of Brachiocephalicus?
Cleidocervicalis
Cleidomastoideus
Cleidobrachialis
Origin of Cleidocervicalis and Cleidomastoideus (brachiocephalicus)?
Clavicular tendon, as Cleidocephalicus
Origin of Cleidobrachialis (Brachiocephalicus)?
Clavicular tendon
Insertion of Cleidocervicalis (Brachiocephalicus)?
Wing of Atlas (C1), nuchal crest
Insertion of Cleidomastoideus (Brachiocephalicus)?
Mastoid process
Insertion of Cleidobrachialis (Brachiocephalicus)?
Deltoid tuberosity & lateral antebrachial fascia
Nerve supply of Cleidocephalicus and Cleidomastoideus (Brachiocephalicus)?
Accessory spinal nerve
Nerve supply of Cleidobrachialis (Brachiocephalicus)?
Cleidobrachial nerve (part of the pectoral nerve)
Action of Brachiocephalicus (all 3 heads)?
Forelimb protractor
2 parts of Sternocephalicus?
Sternomastoideus
Sternooccipitalis
Origin of both Sternomastoideus and Sternooccipitalis?
Manubrium
Insertion of Sternomastoideus?
Mastoid process
Insertion of Sternooccipitalis?
Dorsal nuchal crest
Nerve supply of Sternomastoideus and Sternooccipitalis (Sternocephalicus)
Accessory spinal nerve
2 parts of Trapezius?
Cervicis
Thoracis
Origin of Cervicis Trapezius?
C2-T3
Insertion of Cervicis Trapezius?
Dorsal 2/3 spine of scapula
Origin of Thoracis Trapezius?
T3-10
Insertion of Thoracis Trapezius?
Dorsal 1/3 spine of scapula
Nerve supply of Trapezius?
Accessory spinal nerve
Action of Trapezius?
Controls scapula
Origin of Omotransversarius?
Wings of Atlas (C1)
Insertion of Omotransversarius?
Distal 1/3 of spine of scapula
Nerve supply of Omotransversarius?
Accessory spinal nerve
Action of Omotransversarius?
Controls scapula
2 parts of Serratus Ventralis?
Cervicis
Thoracis
Origin of Cervicis Serratus Ventralis?
Transverse process C4-7
Insertion of Cervicis Serratus Ventralis?
Scapula cartilage and medial surface of scapula
Origin of Thoracis Serratus Ventralis?
First 8-9 ribs
Insertion of Thoracis Serratus Ventralis?
Scapula cartilage and medial scapula
Nerve supply of Cervicis Serratus Ventralis?
Segmental cervical nerve
Nerve supply of Thoracis Serratus Ventralis?
Long thoracic nerve
Action of Cervicis and Thoracis Serratus Ventralis?
Thoracic sling
4 parts of Longissimus?
Capitis
Cervicis
Thoracis
Lumborum
Origin of all parts of Longissimus?
Dorso-lateral aspect of vertebrae, continuous
Insertion of all parts of Longissimus?
Dorso-lateral aspect or vertebrae, continuous
Nerve supply of all parts of Longissimus?
Segmental nerve
Origin of Latissimus Dorsi?
Supraspinous ligament from T3 caudally
Insertion of Latissimus Dorsi?
Teres Major tuberosity
Nerve supply of Latissimus Dorsi?
Thoracodorsal nerve C8
Action of Latissimus Dorsi?
Forelimb retractor
3 parts of Rhomboideus?
Capitis
Cervicis
Thoracis
Origin of Capitis Rhomboideus?
Nuchal crest
Origin or Cervicis and Thoracis Rhomboideus?
C2-T8
Insertion of Capitis, Cervicis and Thoracis Rhomboideus?
Distal border of scapular
Nerve supply of Rhomboideus?
Ventral branch of cervical and thoracic segmental nerve
Action of Rhomboideus?
Controls scapula
Origin of Supraspinatus?
Supraspinous fossa
Insertion of Supraspinatus?
Greater and lesser tubercles of humerus
Action of Supraspinatus?
Shoulder extensor
Origin of Infraspinatus?
Infraspinatus fossa
Insertion of Infraspinatus?
Greater tubercle of humerus
Action of Infraspinatus?
Shoulder stability
Nerve supply of Supraspinatus and Infraspinatus?
Suprascapular nerve C6(7)
Origin of Subscapularis?
Subscapula fossa
Insertion of Subscapularis?
Lesser tubercle of humerus
Nerve supply of Subscapularis?
Subscapular nerve C6 C7
Action of Subscapularis?
Shoulder stability
Origin of Coracobrachialis?
Corocoid process
Insertion of Coracobrachialis?
Teres major tuberosity
Action of Coracobrachialis?
Shoulder flexor (minor)
Origin of Biceps Brachii?
Supraglenoid tubercle
Insertion of Biceps Brachii?
Radial and Ulnar tuberosities via two tendons
Action of Biceps Brachii?
Elbow flexor
Origin of Brachialis?
Musculo-spiral groove of humerus
Insertion of Brachialis?
Radial and ulnar tuberosities via division of fibres
Action of Beachialis?
Elbow flexor
Nerve supply of Coracobrachialis, Biceps Brachii and Brachialis?
Musculocutaneousnerve C7
Origin of Teres Major?
Caudal angle of Scapula
Insertion of Teres Major?
Teres major tuberosity
Nerve supply of Teres Major?
Axillary nerve C7 C8
Action of Teres Major?
Shoulder flexor
Two parts of Deltoideus?
Spinous
Acromial
Origin of spinous Deltoideus?
Caudal border of scapula and spine of scapula
Origin of Acromial Deltoideus?
Acromion
Insertion of both Spinous and Acromial Deltoideus?
Deltoid tuberosity
Nerve supply of Spinous and Acromial Deltoideus?
Auxiliary nerve C7 C8
Action of Deltoideus?
Shoulder flexor
4 heads of Triceps Brachii?
Long head
Lateral head
Medial head
Accessory head
Origin of Long Head of Triceps Brachii?
Caudal border of scapula
Origin of Lateral Head of Triceps Brachii?
Deltoid tuberosity
Origin of Medial Head of Triceps Brachii?
Medially, middle 1/3 humerus
Origin of Accessory head of Triceps Brachii?
Caudally, middle 1/3 humerus
Insertion of all 4 heads of Triceps Brachii?
Olecranon
Nerve supply of Triceps Brachii?
Radial nerve C7 C8 T1
Action of Triceps Brachii?
Elbow extensor
Origin of Pectoralis Superficialis?
Manubrium
Insertion of Pectoralis Superificialis?
Deltoid tuberosity and fascia
Origins of Pectoralis Profundus (3)?
Sternum and median raphe
Ribs 4-9
Abdominal fascia
Insertion of Pectoralis Profundus?
Greater and lesser tubercles of humerus.
Tendon of Coracobrachialis
Nerve supply of both Pectoralis Superficialis and Profundus?
Pectoral nerve C6 C7 C8 T1
Origin of Extensor Carpi Radialis?
Lateral Humeral epicondyle
Insertion of Extensor Carpi Radialis?
Proximal dorsal metacarpal II and metacarpal III via two tendons
Nerve supply of Extensor Carpi Radialis?
Radial nerve C7 C8 T1
Action of Extensor Carpi Radialis?
Carpal extensor
3 heads of Extensor Digitorum Communis (3)?
Radial head
Humeral head
Ulnar head
Origin of Radial Head of Extensor Digitorum Communis?
Lateral tuber of proximal radius
Origin of Humeral Head of Extensor Digitorum Communis?
Lateral epicondyle of humerus
Origin of Ulnar Head of Extensor Digitorum Communis?
Lateral surface of ulna
Insertion of all 3 heads of Extensor Digitorum Communis?
Extensor processes P3, digits 2-5
Action of Extensor Digitorum Communis?
Digital extensor
Origin of Extensor Digitorum Lateralis?
Proximal lateral radius and ulna
Insertion of Extensor Digitorum Lateralis?
Extensor processes P3, proximo-dorsal aspects of P1 and P2, digits 3-5
Action of Extensor Digitorum Lateralis?
Digital extensor
Nerve supply of Extensor Digitorum Communis and Extensor Digitorum Lateralis?
Radial nerve C7 C8 T1
Origin of Extensor Carpi Ulnaris?
Lateral epicondyle of humerus
Insertion of Extensor Carpi Ulnaris?
Proximal head of metacarpal V, including accessory carpal bone
Nerve supply of Extensor Capri Ulnaris?
Radial nerve C7 C8 T1
Action of Extensor Carpi Ulnaris?
Carpal extensor
Origin of Flexor Carpi Radialis?
Medial epicondyle of humerus
Insertion of Flexor Carpi Radialis?
Proximal metacarpal II and III
Nerve supply of Flexor Carpi Radialis?
Median nerve C8 T12
Action of Flexor Capri Radialis?
Carpal flexor
Two heads of Flexor Carpi Ulnaris?
Humeral head
Ulnar head
Origin of Humeral head of Flexor Carpi Ulnaris?
Medial epicondyle of humerus
Origin of Ulnar Head of Flexor Carpi Ulnaris?
Medial olecranon
Insertion of both Humeral and Ulnar heads of Flexor Carpi Ulnaris?
Accessory carpal bone
Nerve supply of Flexor Carpi Ulnaris?
Ulnar nerve C8 T12
Action of Flexor Carpi Ulnaris?
Carpal flexion
3 heads of Flexor Digitorum Profundus?
Humeral head
Ulnar head
Radial head
Origin of Humeral head of Flexor Digitorum Profundus?
Medial epicondyle of humerus
Origin of Ulnar Head of Flexor Digitorum Profundus?
Medial olecranon
Origin of Radial head of Flexor Digitorum Profundus?
Caudo-medial surface of radius
Insertion of Humeral, Ulnar and Radial head of Flexor Digitorum Profundus?
Flexor surface of P3, digits 2-5
Nerve supply of Humeral and Ulnar heads of Flexor Digitorum Profundus?
Ulnar nerve C8 T12
Nerve supply of Radial head of Flexor Digitorum Profundus?
Median nerve C8 T12
Action of Flexor Digitorum Profundus?
Digital flexor
Origin of Flexor Digitorum Superficialis?
Medial epicondyle of humerus?
Insertion of Flexor Digitorum Superficialis?
Flexor surfaces of P2, digits 2-5
Action of Flexor Digitorum Superficialis?
Digital flexor
Origin of Interossei?
Palmaro-proximal third of MC2 to MC5
Insertion of Interossei?
Via proximal sesamoid bones to proximal P1, digits 2-5. Slips to extensor tendons
Nerve supply of Interossei?
Ulnar nerve C8 T12
Action of Interossei?
MC - phalange flexors
2 parts of Iliopsoas?
Psoas Major
Iliacus
Origin of Psoas Major (Iliopsoas)?
Transverse processes L2-3
Insertion of Psoas Major (Iliopsoas)?
L4-L7 and lesser trochanter of femur
Origin of Iliacus (Iliopsoas)?
Ventral border of Ilium
Insertion of Iliacus (Iliopsoas)?
Lesser trochanter of femur
Nerve supply of Iliopsoas?
Ventral branch of lumbar nerve
Action of Iliopsoas?
Hip flexor
4 parts of Quadriceps Femoris?
Rectus Femoris
Vastus Lateralis, Intermedius, Medialis
Insertion of Rectus Femoris?
Iliopubic eminence
Origin of Vastus Lateralis, Intermedius and Medialis?
Proximal femur
Insertion of Quadriceps Femoris (Rectus Femoris & Vastus Lateralis, Intermedius, Medialis)?
Tibial tuberosity via patellar tendon
Nerve supply of Quadriceps Femoris (Rectus Femoris & Vastus Lateralis, Intermedius, Medialis)?
Femoral nerve
Action of Quadriceps Femoris (Rectus Femoris & Vastus Lateralis, Intermedius, Medialis)?
Stifle extensors
Origin of Tensor Fascia Latae?
Dorsal border of ilium
Insertion of Tensor Fascia Latae?
Fascia lata
Nerve supply of Tensor Fascia Latae?
Cranial gluteal nerve L6 L7 S1
Origin of Gluteus Medius?
Gluteal surface of ilium
Insertion of Gluteus Medius?
Greater trochanter
Origin of Gluteus Profundus?
Shaft of ilium to ischiatic spine
Insertion of Gluteus Profundus?
Intertrochanteric fossa
Nerve supply of Gluteus Medias and Gluteus Profundus?
Cranial gluteal nerve L6 L7 S1
Action of Gluteus Medias and Gluteus Profundus?
Hip extensor
Origin of Gluteus Superficialis?
Lateral borders of sacrum, Co 1 and sacrotuberous ligament
Insertion of Gluteus Superficialis?
Third trochanter and fascia lata
Nerve supply of Gluteus Superficialis?
Caudal gluteal nerve L6 L7 S1
Action of Gluteus Superficialis?
Hip extensor
Origin of Sartorius Cranialis and Sartorius Caudalis?
Fascia of iliac crest
Insertion of Sartorius Cranialis?
Distal medial femoral fascia
Insertion of Sartorius Caudalis?
Proximal medial tibial fascia
Nerve supply of Sartorius Cranialis and Sartorius Caudalis?
Saphenous(branch of femoral nerve)
Action of Sartorius Cranialis and Sartorius Caudalis?
Hindlimb protraction
Origin of Obturator Externus?
Rim of Obturator foramen
Insertion of Obturator Externus?
Intertrochanteric fossa
Action of Obturator Externus?
Hip stability
Origin of Pectineus?
Prepubic tendon
Insertion of Pectineus?
Distal medial femoral fascia
Origin of Adductor?
Entire pelvic symphysis
Insertion of Adductor?
Caudal shaft of femur
Action of Adductor?
Hip extensor
Origin of Gracilis?
Pubic symphysis
Insertion of Gracilis?
Medial fascia of proximal tibia
Action of Gracilis?
Hip extensor
Nerve supply of Obturator Externus, Pectineus, Adductor and Gracilis?
Obturator nerve L4 L5 L6
2 parts of Semimembranosus?
Femoral
Tibial
Origin of Femoral and Tibial Semimembranosus?
Ischial tuberosity
Insertion of Femoral Semimembranosus?
Medial distal femoral fascia
Insertion of Tibial Semimembranosus?
Medial proximal tibial fascia
Origin of Semitendinosus?
Ischial tuberosity
Insertion of Semitendinosus?
Cranial border of tibia. Slip to common calcaneal tendon
Nerve supply of Semimembranosus and Semitendinosus?
Tibial nerve L6 L7 S1 S2
Action of Semimembranosus and Semitendinosus?
Hip extensor
Origin of Biceps Femoris?
Ischial tuberosity
Insertion of Biceps Femoris?
Fascia lata, in region of lateral stifle. Slip to common calcaneal tendon
Nerve supply of Biceps Femoris?
Tibial nerve L6 L7 S1 S2
Action of Biceps Femoris?
Hip extensor
Origin of Gastrocnemius?
Medial and lateral supracondylar tuberosities of femur
Insertion of Gastrocnemius?
Gastrocnemius tendon (major part of common calcanean tendon) onto Calcaneus
Nerve supply of Gastrocnemius?
Tibial nerve L6 L7 S1 S2
Action of Gastrocnemius?
Tibio-tarsal extensor
Origin of Flexor Digitorum Superficialis?
Supracondylar fossa of femur
Insertion of Flexor Digitorum Superficialis?
Plantar surfaces of P2, digits 2-5
Nerve supply of Flexor Digitorum Superficialis?
Tibial nerve L6 L7 S1 S2
Origin of Flexor Digitorum Profundus?
Caudal surface of tibia and lateral tibial condyle
Insertion of Flexor Digitorum Profundus?
Plantar surface of P3, digits 2-5
Nerve supply of Flexor Digitorum Profundus?
Tibial nerve L6 L7 S1 S2
Action of Flexor Digitorum Superficialis and Profundus?
Digital flexor
Origin of Tibialis Cranialis?
Proximo-lateral tibial crest
Insertion of Tibialis Cranialis?
Area of central tarsal bone, proximal MT2
Origin of Fibularis Longus?
Lateral condyle of tibia
Insertion of Fibularis Longus?
Proximal MT 3 and MT 4
Nerve supply of Tibialis Cranialis and Fibularis Longus?
Fibular nerve L6 L7 S1 S2
Action of Tibialis Cranialis and Fibularis Longus?
Tibio-tarsal flexor
Origin of Extensor Digitorum Longus?
Lateral condyle of femur
Insertion of Extensor Digitorum Longus?
Extensor processes of P3, digits 2-5
Origin of Extensor Digitorum Lateralis?
Lateral tibia
Insertion of Extensor Digitorum Lateralis?
Joins with Extensor Difitorum Longus to insert into P3, digit 5
Origin of Extensor Digitorum Brevis?
Cranial aspect of tarsus
Insertion of Extensor Digitorum Brevis?
Tendons of Extensor Digitorum Longus
Nerve supply of Extensor Digitorum Longus, Lateralis and Brevis?
Fibular nerve L6 L7 S1 S2
Action of Extensor Digitorum Longus, Lateralis and Brevis?
Digital extensors
Origin of Interossei?
Palmaro-proximal third of MT2 to MT5
Insertion of Interossei?
Via proximal sesamoid bones to proximal P1, digits 2-5. Slips to extensor tendons
Nerve supply of Interossei?
Tibial nerve L6 L7 S1 S2
Action of Interossei?
Metatarsal- phalanges flexor
