SA Thoracic Vessels and Nerves Flashcards
Main supply to the paw in thoracic limb?
Median a.
First branch off the axillary artery?
External thoracic a.
External thoracic a. supplies…?
almost the entire superficial pectoral
Which artery runs caudally across the axillary lymph node?
Lateral thoracic a.
Lateral thoracic a. supplies what?
Latissimus dorsi, deep pectoral and cutaneous trunci
What does the subscapular artery supply?
Subscapularis, part of the teres major and the scapula
Branches off of the subscapular a.?
Thoracodorsal a. and the Caudal circumflex humeral a.
Throacodorsal a. supplies what?
teres major and latissimus dorsi
Caudal circumflex humeral a. supplies what?
triceps, deltoideous, coracobrachialis, infraspinatus, and should joint capsule
Cranial circumflex humeral a. supplies?
biceps brachii m. and the shoulder joint
-collateral circulation with caudal circumflex humeral a.
After the cranial circumflex humeral a. branches off the axillary a., the axillary a. becomes which a.?
Brachial a.
Deep brachial a. supplies?
- dives deep into the brachium, triceps m.
- runs caudal to supply the triceps brachii muscle
Bicipital a. supplies?
biceps and brachialis m.
Collateral ulnar a. supplies?
triceps m. and caudal elbow (joint capsule)
Superficial brachial- a. supplies?
superficial brachium (cranial surface)
Transverse cubital a. supplies?
cranial elbow, dives deep into elbow joint
Common interosseous a.
is short, dives b/t radius and ulna. Ulnar, caudal interosseous, cranial interosseous
Median a. supplies?
- supplies the palmar surface of the paw
- passes through the carpal canal
- gives off the radial a.
- gives off superficial palmar arch and deep antebrachial a.
Arterial supply to the manus
Dorsal surface is small arteries. Palmar surface is the median artery.
Vein in thoracic limb used for catheters and venipuncture
cephalic v.
Brachial plexus
- ventral branches of C6-T2
- somatic/sensory & motor innervation to the forelimb
- axillary region
Cranial and caudal pectoral n.
superficial and deep pectoral m.
Lateral thoracic n.
cutaneous trunci m.
important for neuro exams
Thoracodorsal n.
latissimus dorsi m.
Suprascapular n.
supplies the infraspinatus and supraspinatus m.
Subscapular n.
multiple branches, travel into the subscapularis m.
Musculocutaneous n.
coracobrachialis m., biceps brachii m., brachialis m.
-sensory to the medial aspect of the antebrachium
Axillary n.
- teres major, teres minor, deltoideus, part of the subscapularis (shoulder stabilizers)
- runs w/ the caudal circumflex humeral a.
- sensory to the caudal scapular region and craniolateral brachium
Radial n.
- *weight bearing**
- extensors of the elbow, carpus and digits
- deep and superficial br.
- superficial br. runs w/ cephalic v.
- superficial gives off the lateral cutaneous antebrachial n.
- autonomous innervation to the dorsal manus
Median n.
- common trunk w/ ulnar n.
- pronator teres m., pronator quadratus m., FCR, SDF, parts of DDF
- Runs through the carpal canal to supply sensory to the palmar aspect of the paw
Ulnar n.
- FCU m., parts of the DDF m.
- passes through carpal canal
- sensory innervation to the lateral surface of the metacarpus and 5th digit
Innervation of the Glenohumeral Joint
axillary n. & suprascapular n.
