AVS-4160 Lecture Notes - Lecture 13: Natriuresis, Pressure Sensor, Baroreceptor
1 Nov 2016
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The equine heart has a rapid response to training (2-3 weeks) Draft horses are less likely to need to run away: they are better able to defend themselves, their hearts are not as large a percent of their body weight as a thoroughbred"s is. A horse"s heart is larger than a cow"s heart. The right side of a horse"s heart is the pulmonary side. The left side of a horse"s heart is the systemic side. The heart receives blood via the vena cava. Each organ has a plexus of capillaries that surrounds it: venules, arterioles. Splenic dumping gives the horse more blood cells and thus increases their oxygen carrying capacity when they need to run fast. In all mammals, the left ventricular wall is very thick. The spleen is an accessory organ to the cardiovascular system. Constriction of the blood vessels slows the blood flow so that oxygen, carbon dioxide, and other things can be exchanged.
