Changes

==Thoracic Limb==

==Thoracic Limb==

===Proximal===

===Proximal===

The '''subclavian artery''' gives rise to the '''superficial cervical artery''', before it becomes the '''axillary artery'''.  The '''deltoid branch''' of the superficial cervical artery accompanies the '''cephalic vein''' (arises from the external jugular vein) though a groove between the ''brachiocephalicus'' and ''pectoralis descendens''.  The '''axillary vessels''' give rise to the following vessels before becoming the '''brachial artery''':  

The '''subclavian artery''' gives rise to the '''superficial cervical artery''', before it becomes the '''axillary artery'''.  The '''deltoid branch''' of the superficial cervical artery accompanies the '''cephalic vein''' (arises from the external jugular vein) though a groove between the [[Muscles - Horse Anatomy#Extrinsic Musculature of the Thoracic Limb|''brachiocephalicus'']]  and [[Muscles - Horse Anatomy#Extrinsic Musculature of the Thoracic Limb|''pectoralis descendens'']].  The '''axillary vessels''' give rise to the following vessels before becoming the '''brachial artery''':  

* '''External thoracic vessels''': supply the pectoral muscles

* '''External thoracic vessels''': supply the [[Muscles - Horse Anatomy#Extrinsic Musculature of the Thoracic Limb|pectoral]]  muscles

* '''Suprascapular vessels''': supply the caudal border of the suprascapular muscles

* '''Suprascapular vessels''': supply the caudal border of the [[Muscles - Horse Anatomy#Extrinsic Musculature of the Thoracic Limb|''suprascapular'']] muscles

* '''Thoracodorsal vessels''': supply the latissimus dorsi  

* '''Thoracodorsal vessels''': supply the [[Muscles - Horse Anatomy#Extrinsic Musculature of the Thoracic Limb|''latissimus dorsi'']] 

* '''Caudal circumflex humeral vessels'''

* '''Caudal circumflex humeral vessels'''