Horses Anatomy Essay

The respiratory corpse of the horse is well adapted to athletic exercise, with unrestricted upper air duct diameters, and a whopping lung capacity afforded by 18 ribs. These combine to enable air intakes of up to 1800 litres per minute in a galloping horse. Volumes of up to 300 litres of pipeline are pumped at high pressure through subaltern lung capillaries surrounding 10 million air sacs to take up and deliver over 70 litres of oxygen per minute to the working muscles at the gallop.As a result, any restriction in upper airway diameter, obstruction of the airways, diseases or stress related conditions that reduce efficiency of oxygen uptake from the air sacs, tolerate pay back a great influence on athletic capacity.The large lung surface and high blood flow rates also provide the additional function of heat loss during and after exercise, with up to 20% of the muscle heat generated during exercise macrocosm exchanged across the lung surface to supplement pass and other ski n surface heat loss mechanisms.The respiratory system is continually challenged by a large amount of foreign material, including viruses, bacteria and fungi inhaled in air from track and arena surfaces during exercise, or from dusty bedding, feed and stable environments.The horses circulatory system is a very large and complex system made up of veins and arteries. The blood is the pumped under enormous pressure from the warmness along the arteries which have thick muscular walls to deal with the pressure. It oxygenates the body and the internal organsThe circulatory system is based upon the heart a hollow, muscular organ in the chest cavity. It pumps the blood around the body and is divided into foursome separate compartments .Blood from the right ventricle goes to the lungs to be oxygenated and then is returned to the left ventricle.Blood from the left ventricle is pumped all through the body in arteries.Arteries repeatedly branch and diminish in sizing until they become micro scopic capillaries.Capillaries permit necessary interchange between blood and tissue. They eventually join up to produce veins, which convey blood to the right atrium and from there to the right ventricle.A horse of average size has approximately 50 pints (28 litres) which circulate through his system every 40 seconds.Excretory systemDepending on size, age, and productive status (work, sport, pleasure, breeding, pregnancy, lactation, retirement), a horse will digest about 60% of most feedstuffs. break that is 60% digestible indicates that if a horse is fed 25 pounds of dry feed, 15 will be digested and 10 pounds will be excreted as manure (feces). This will vary by feed. Feeds that are high in fiber such as hays and grasses have a lower digestibility. Conversely, concentrate feeds that ask grains such as corn, oats, and/or barley, usually have a higher efficiency of digestion and less fecal excreting.Nitrogen (N) is a major component of protein. Horses need protein for maintenan ce, growth, reproduction, lactation, and work. Phosphorus (P) is a macromineral needed for maintenance, growth, and other physiologic functions. Water is also essential for bodily functions. Water is lost from the body primarily in the excretion of feces and urine, sweat, evaporation from the lungs and skin, and in the case of lactation, from milk. It also affects the consistency of manure.All nutrients that are digested (absorbed) are metabolized in the horses body. Some of these, especially nitrogen in proteins, are excreted in the urine. After being digested and metabolized in the body, waste nitrogen is converted to urea in the liver and excreted in the urine. Additional ununderstood nitrogen is excreted in the feces. Overfeeding protein will sum up the excretion of nitrogen.Overfeeding phosphorus will increase the excretion of phosphorous, most of which is excreted in the feces. Horses should be fed a diet that is digestible and formulated to gratify nutritional requirements, while avoiding excesses. Overfeeding can result in higher levels of nitrogen and phosphorus in the manure. Horse farmers should feed horses according to their nutritional needs. Specific recommendations for nitrogen (protein) and phosphores.