Muscles of the Forelimb OI, artery supply Flashcards
OI,Action
Subscapularis
O: subscapular fossa ( medial side scapula)
I: lesser tubercle humerous
Action: adduct
Extend.l
Stabilize shoulder
Artery: subscapular a ( axillary)
nerve: axillary n + subscapular n
Coracobrachialis
O: coracoid process ( scapula )
I:crest less tubercle
Action:
Exten shoulder
Adduct
Artery
Nerve
Musculocutaeous n
Deep Pectoral
O:
ventral sternebrae
Deep abdonimal fascia from xiphoid process
I:
Lesser tubercle humerous ( medial)
Aponeurosis to crest of greater tubercle
Action:
Digging –
Draw limb caudally
Flex shoulder
WB: extend shoulder joint
Artery: Lateral thoracic a (axillary)
nerve: caudal thoracic
Superficial pectoral
O: First 1-2 Sternebrae
I:Crest greater tubercle humerus ( lateral)
Action:
adduct
WB: prevent abducting
Artery: External thoracic
Nerve: cranial thoracic
Brachiocepahlicus
- Cleidobrachialis
O: clavicular tendon
I: distal cranial border humerus
Action:
Advance limb
Draw neck laterally
WB: Extend shoulder joint
Artery:
Brachiocephalicus-
Cleidocephalicus pars mastoid
O: clavicular tendon
I: Mastoid bone
Action:
Advance limb
Draw neck laterally
WB: Extend shoulder joint
Artery:
Brachiocephalicus
cleidobrachialis pars clavicular
O: clavicular tendon
I: cranial half mid dorsal raphe
Action: Same as brachiocepahlicus
Artery:
Sternocephalicus
- mastoid part
- occipital part
O: 1 st sternebrae
I:
Mastroid part temporal bone
Nuchal crest occipital bone
Action:
draw neck side
Artery:
Sternohyoideus
O: 1st sternebrae
I:basihyoid bone
Action:
draw tongue and larynx caudally
Artery:
Sternothyroideus
O: 1st coastal cartilage
I: caudolateral surface thyroid cartilage
Action:
draw tongue and larynx caudally
Artery:
Omnotransversarius
Attachement: wing of atlas —-distal spine of scapula
Action:
Advance limb
Draw neck laterally
( same are brachiocephalicus , makes sense since omno is under brachio)
Artery:
what special structure is found under omnotransversarius?
superficial cervical lymph node
Trapezius
cervical part
thoracic part
O: Supraspinatous ligament c3 to T9
median raphe neck
I: Spine Scapula
Action:
-WB: extend shoulder
-Abduction
Artery:
Rhomboideus
capitis
cervicis
thoracis
O:
Nuchal crest occipal bone
Median raphe neck
Spinous processes T1 - T7
I: Dorsal border scapula
Action:
- WB: Extend shoulder
-draw scapula to truck ( stabilise)
Artery:
Latissimus Dorsi
O:
Spinous processes last 7-8 thoracic vertebrae + lumbar vertebrae
I: Teres major tuberosity ( medial humerous)
Makes sense lstissmus is next to trees major
Action:
- draw limb caudally
- flex shoulder
Artery:
- thoracodorsal a. ( branch from subscapular — Axillary)
-lateral thoracic (axillar)
Nerve
-Thoracodorsal n
Serratus Ventralis
O:
Transverse processes last cervical vertebrae
Ribs 1-7
I:Serrated face Scapula ( medial)
Action:
- depress scapula
- Support trunk sling muscle, transfers weight head and trunk to forelimb)
Artery:
Infraspinatous
O: Infraspinatous fossa scapula
I: Small area lateral side humerous near teres minor tuberosity
Action:
Extend shoulder
Flex shoulder
abduct shoulder
Lateral Stabilisation
Prevent medial rotation
Artery:
nerve: suprascapular n
Teres Minor
O: infraglenois tubercle
I: Tere minor tuberosity ( huerous lateral side)
Teres minor right next to infraspinatous. Inflaglenoid tubercle is right under infraspinatous fossa***
Action:
Flex shoulder
Prevent medial rotation
Rotate shoulder laterally
Artery:
Nerve:
-axillary n
Deltoid
Acromial part
Spinal spinal
O:
Acromial process Scapula
Spine Scapula
I: Deltoid tuberosity ( Lateral humerous)
Action:
Flex shoulder
Artery:
nerve:
axillary n
Supraspinatous
O: Supraspinous fossa (scapula)
I: Greater tubercle humerous ( lateral side)
**makes sense since infraspinatous is close to supraspinatous attaches on lateral surface near tere minor tubersity which is on lateral side and the greater tubercle is lateral) + trees minor next to there and attaches trees minor tubeosit lat numerous greater tubercle
Action:
Extend shoulder
Stabilise shoulder joint
Artery:
Nerve
Suprascapular n
Subscapularis
O: Subscapular fossa ( medial scapula)
I:Lesser tubercle humerous
** makes sense since on medial side and lesser tubercle is on medial side**
Action:
Adduct
Extend
Medically stabilise shoulder
Artery:
Subscapular a
Nerve
Subscapular n.
axillary n
Teres Major
O: Caudal border scapular
Caudal surface subscapularius ( medial scapula)
I: Teres major tuberosity ( medial humerous)
Action:
Flex
prevent lateral rotation
Rotate shoulder medially
Artery:
Subscapular a.
Thoracodorsal a.
nerve: axillary n
Tensor fascia antibrachii
O: Fascia lateral side latissimus dorsi
I:Olecranon
Action:
Extend elbow
Artery:
Nerve: Radial n
Triceps Brachii Long head
O:Caudal border scapula
I: Olecranon
Action:
- Extend elbow
-Flex shoulder
Artery:
Deep Brachial ( bachial a.)
Nerve
Radial n.
Triceps Brachii Lateral head
O:Triciptial line (humerus lateral)
** makes sense since lateral head on lateral side brachium and triciptial line is lateral side humerous)
I: Olecranon
Action:
- extend elbow
Artery:
Deep brachial ( Brachial a.)
Nerve
Racial n
Triceps Brachii accessory head
O: Neck humerous
can be see on lateral and medial side therefore makes sense it is in a general region of numerous that cam be viewed from both side
I: Olecranon
Action:
-extend elbow
Artery:
Deep brachial ( brachial a)
Nerve
Radial n
Triceps Brachii Medical head
O: Crest lesser tubercle
** makes sense right below coracoidbrwcial hat inserts on crest lesser tubercle***
I: Olecranon
Action:
- extend elbow
Artery:
- deep brachial ( brachial a)
-collateral ulnar a ( brachial a)
Radial nerve
Anconeus
O: Medial epicondyl
Lateral epicondyl
Lateral supracondylar crest
epicondyle humerus
I: Olecranon
Action:
extend shoulder
Artery:
nerve: Radial n
What is the transverse humoral retinaculum?
Holds down tendon biceps brachii
retinatlum that goes over intertubercle groove
Biceps Brachii
O: Supraglenoid tubercle
I: Ulna and radial tuberosities
Action:
-flex elbow
-extend should
Artery:
Biciptial a ( brahial a)
Cranial circumflex Humeral a ( Axillary a)
Nerve
Musculocutaneous n
Brachialis
O: Biceps groove
I: ulna and radial tuberosities
Action:
-flex elbow
Artery:
Nerve
Musculocutaneous n
Extensor Carpi Radialis
O: lateral supracondrylar crest
I: tuberosities dorsal surface metacarpals 2 and 3
Action:
- extend the carpal joint
Artery
common interosseous ( brachial a)
nerve: radial n
Common digital extensor
O: lateral epicondyle
I: extensor processes distal phalages 2, 3,4,5
Action:
-extend carpus
- extend phalanges
Artery: common interosseous ( brachial a)
nerve: radial n
Lateral digital extensor
O: lateral epicondyle
I: extensor processes distal phalanges of digits 3,4,5
Action
- extend carpal joint
-extend digits 3,4,5
Artery
Common interosseous
nerve: Radial N
Ulnaris lateralis
O: lateral epicondyle
I:
accessory bone
pollex
Action:
-flex carpal joint
- abduct manus
Artery: common interosseous
Nerve : Radial N
Supinator
O:lateral epicondyle
I: cranial 1/4 proxmial radius
Action
-supinate
Artery
Abductor digit 1 longus
O: lateral/ cranial border ulna
I: pollex
Action
-extend carpal joints
-abduct pollex
Artery
Common interosseous?
Nerve
Radial nerve?
Pronator teres
O:Medical epicondyle humerus
I: medial border radius
Action
- pronation
Artery
Nerve
Median n
Flexor Carpi Radialis
O: Medial epicondyle humerus
medial border radius
I:palmar base metacarpals 2 and 3
Action
- flex carpal joint
Artery
Deep antibrachial a ( median a)
Nerve
Median
Superficial Digital flexor
O:Medial epicondyle
I: palmar surface middles phalanges digits 2,3,4,5
Action
- flex carpal joint
-flex metacapals
-flex interphalangeal joints 2,3,4,5
Artery
Deep antebrachial ( median a)
Nerve
Median
Deep Digital flexor
O: ulnar head
radial head
humeral head
medial epicondyle
I: flexor tubercle palmar surface of distal phalanx digits 1,2,3,4,5
Action
- flex carpal and metacarpophalangeal joint
-flex proximal and and distal interphalangeal joints
Artery
Deep antebrachial ( median a)
Nerve
Median
Ulnar
Flexor Carpi Ulnaris
Radial head
Ulnar Head
O: Ulna head
medical epicondyle
Caudal border medical surface olecranon
I: accessory bone
Action
- flex carpus
Artery
Deep antebrachial ( median a)
Nerve
Ulnar
Pronator Quadratus
between ulna and radius
Action
-pronate paw
Artery
- Common interosseous a ( brachial)
Nerve
Median n
what is flexor manica?
whole in superficial digital flexor tendon to allow deeep digital flex tendon to pass and reach phalange 1
what is the carpal canal borders?
What nerves supply paw?
Palmar
-median, ulnar
Dorsal
-radial
What muscles does External thoracic a. feed?
external thoracic (Axillary )
superficial pectorals
What muscles does Lateral thoracic a. feed?
from axillary
deep pectoral
latissimus dorsi
cutaneous trunci
what artery suppies the glenhumoral joint?
caudal circulflex humoral a. ( axillary)
cranial circumflex humoral
What muscles does Cranial circulflex a. feed?
Briceps brachii
What muscles does deep brachial a. feed
triceps
- long head
-medial heead
-accessory head
-lateral head
What muscles does Bicipital a. feed
Brachial
Biceps brachii
Supply to the biceps brachii comes from what major branches? Axillare? brachial? medial?
Axillary branch ( via cranial circulflex humoral)
Brachial branch ( via biciptial)
What muscles does collateral ulnar. feed
Brachial a
caudal elbow
medial head triceps
What muscles does transverse cubital a. feed
Brachial a
the cranial elbow
What muscles does Common interosseous. feed?
brachial a
pronator quadatrus
extensors
What muscles does median a. feed
palmar manus
What muscles does radial a. feed
dorsal manus
alittle bit of the palmar
brachial plexus is from ?
C6 -T2
how is blood supply to manus?
dorsal: radial ( median a)
palmar: median + radial
what does cranial thoracic n innervate?
superficial pectoral
runs with: external thoracix artery
what does caudal thoracic n innervate?
deep pectorals
runs with : lateral thoracid artery
what is near axillary lymph node?
-lateral thoraci artery
-lateral thoracic n
what does lateral thoracic n innervate?
cutaneous trunci
what motor action does lateral thoracic nerve do?
Puniculus
what does thoracodrosal n innervate?
latissiums dorsi
can be found with thoracodoral a
what does Suprascapular n innervate?
what is its landmark?
infraspinatous
supraspinatous
landmark? squeeze medial side between subscapularis and medial part of suprascapular
what does Subscapular n innervate?
Subscapularis
what does musculocutaneous innervate?
Motor (efferent)
-biceps brachii
-brachialis
-coracoidbrachials
” flexors of elbow”
Sensory (afferent)
-medial antibrachium ( medial cutaneous antibrachium n )
what does axillary n innervate?
” flexors of shoulder”
motor efferent
-deltoids
-teres major
-teres minor
-subscapularis
sensory afferent
-caudal lateral brachium
what does Radial n innervate?
extenosors
Motor effert
Proximal medial branch
- triceps
-anconeus
-tensor fascia antibrachrium
distal ( see lateral side)
-extensor carpi radial
-common digital extensor
-lateral digitial extensor
-ulnaris lateralis
AFFERENT SENSORY
- laterla antibrachium
-dorsal manus
radial nerve is found where?
it travels with what?
between lateral and long head triceps
travels with deep brachial a ( brachial a)
What nerves are responsible for sesnsory to paw?
Dorsal: radial n
palmar: median, ulnar
what does Median n innervate?
Motor efferent
-pronator quadratus
-pronator teres
-flor carpi radials
-DDF
-SDF
Sensory
-palmar paw
what does ulnar n innervate?
motor efferent
-flexor carpi ulnaris
-deep digital flexor
sensory afferent
-palmar p
what is the autonomous zone for ulnar nerve?
5th digit
palmar paw
what is the autonomous zone for radial nerve?
pollex ( digit 1)
palmar paw
what is autonomous zone for musculocutaneous?
medial antobrachium
what would happen if damage to ulnar + medial n?
hyperextension ( flexor wont work)
loss sensation palmar paw
- 5th digit if ulnar nerve alone
what would happen if damage to musculcutaneous n?
no flexion
loss sensation to medial antibrachium
what would happen if damage to axillary n?
dropped shoulder, no shoulder flexion
no sesions to lateral brachium
The distal annual ligament hold what?
The tendon of deep digital flexor
-over thr distal interphalangeal joints (dog)
- over the distal interphalgeal Joint (coffin joint)
The proximal digital annual ligament hold want?
Tendon of superficial digital flexor and deep digital flexor over
-proximal interphalangel Joint dogs
-interphalengel Joint (pastern joint) horse
The proximal digital annual ligament hold want?
Tendon of superficial digital flexor and deep digital flexor over
-proximal interphalangel Joint dogs
-interphalengel Joint (pastern joint) horse
Flexor retinaculum is called what in the horse? Located where?
Palmar flexor retinaculum
-carpus
-dorsal border carpal carnal
