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Equine Cardiovascular System - Horse Anatomy (view source)

Revision as of 22:27, 18 November 2012

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The left ventricle forms the apex of the heart and is conical in shape. Blood passes from the left ventricle to the ascending aorta through the '''aortic semi-lunar valve'''. From here some of the blood flows into the coronary arteries, which branch from the ascending aorta and carry blood to the heart wall. The remainder of the blood travels throughout the body.
 
The left ventricle forms the apex of the heart and is conical in shape. Blood passes from the left ventricle to the ascending aorta through the '''aortic semi-lunar valve'''. From here some of the blood flows into the coronary arteries, which branch from the ascending aorta and carry blood to the heart wall. The remainder of the blood travels throughout the body.
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===Blood Vessels of the Heart===
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Blood supply to the heart is provided by the left and right coronary arteries. The left coronary artery arises from the aorta, passes between the left auricle and the pulmonary trunk to the coronary groove. It subsequently divides into the interventricular paraconal and circumflex branches. The interventricular paraconal branch runs in the paraconal groove towards the apex of the heart. It supplies the left ventricle and most of the interventricular septum. The circumflex branch runs in the coronary groove and terminates close to the right interventricular groove.  The right coronary artery arises from the aorta, passes between the right auricle and the pulmonary trunk and continues in the coronary groove. It runs around the apex of the heart, then within the right interventricular groove to supply the apex.
    
==Pericardium==
 
==Pericardium==
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==Great Vessels==
 
==Great Vessels==
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The '''left coronary artery''' splits into '''circumflex and interventricular branches'''. The '''right coronary artery''' runs in the coronary groove, before sending an '''interventricular branch''' down the submucosal interventricular groove.  A large cardiac cartilage is present next to the origin of the aorta, a smaller accessory cartilage is sometimes present. The '''brachiocephalic trunk''' branches from the aortic arch, near the heart base. This subsequently gives rise to the '''right subclavian artery''', '''bicarotid trunk''' (gives rise to the right and left '''common carotid arteries''') and the '''left subclavian artery'''. The subclavian arteries give rise to the '''costocervical trunk''', subsequent branches of the subclavian are the '''deep cervical and vertebral arteries'''' and the '''internal thoracic artery'''. Veins run satellite to the arteries.
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===Pulmonary Circulation===
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===Systemic Circulation===
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====Aorta====
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====Brachiocephalic Trunk====
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=====Bicarotid Trunk=====
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=====Subclavian Arteries=====
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