Blood and its components
A substance liquid transparent tend to yellowing and have an important role in water and solutes and also nutrients such as sugars, vitamins and hormones and other, there are 54% of the blood, such as Article interstitial in the blood and is composed of 90% water (the water a big role in terms maintains the body 37 heat ° C) and 10% other materials such as dissolved 2%. (ions mineral salts -7% protein - carbohydrate - fat - vitamins - 1% of antibodies - hormones - dissolved gases)
Red blood cellsDisc shaped concave-sided cells, its function transport of gases and concave surface in order to increase the gas exchange area, and features a flexible membrane cell can of traffic even in the narrowest capillaries. Arise from the red marrow in large bones and renewed every 120 days and breaks up in the liver, spleen and go to the bile to participate in their contents, color red to the presence of hemoglobin consists hemoglobin of protein and iron, the number almost in men of 4 - 5 million in women's 4 - 4.5 million Its mission is limited to carrying oxygen from the lungs and replace them with carbon dioxide gas. Building of red blood cells is controlled by the kidneys through a hormone called Balaritropuecan, and the secretion of this hormone depends on the partial pressure of oxygen in the blood. In high-altitude partial pressure of oxygen is low so Alaritropuecan activates the secretion of the hormone which raises the red blood cell concentration of the population Jubaila areas. Red blood cell containing immature nucleus and mitochondria and Golgi complex and ribosomes and grow these cells are divided evenly split so as to give the mature red blood cell after losing the nucleus and other organelles to make the largest possible area for pigment hemoglobin.
0 التعليقات:
إرسال تعليق