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How does blood collect waste from the body?
Red blood cells (RBCs) hemoglobin urea
Questioner：Ava Mitchell 2018-04-06 10:05:21
The most authoritative answer in 2024
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Amelia Turner——Studied at the University of Manchester, Lives in Manchester, UK.
As a hematologist with a focus on the circulatory system, I can explain the process of how blood collects waste from the body.
Blood is the body's primary transport system. It carries both nutrients and oxygen to cells, and it also carries away waste products. This process is crucial for maintaining homeostasis, which is the body's ability to maintain a stable internal environment.
Red blood cells (RBCs) are responsible for carrying oxygen, which is bound to a protein called hemoglobin. As blood circulates through the body, oxygen is delivered to cells, and in exchange, cells release carbon dioxide (CO2), a waste product of cellular respiration. This CO2 is then transported back to the lungs via the blood, where it can be exhaled.
In addition to CO2, the blood also carries other waste products such as urea and uric acid, which are byproducts of protein metabolism. These substances are filtered out by the kidneys and excreted in the form of urine.
The circulatory system also transports bilirubin, a waste product from the breakdown of red blood cells, to the liver. The liver processes bilirubin and it is then excreted in bile, which eventually makes its way to the digestive system and is eliminated from the body.
Plasma, the liquid component of blood, contains water, electrolytes, nutrients, and proteins. It also carries metabolic waste products such as lactic acid, which is produced by muscles during strenuous activity. The liver and kidneys play a significant role in processing and eliminating these waste products.
In summary, the blood collects waste from the body through a combination of gas exchange, filtration by the kidneys, and processing by the liver, all of which are essential for maintaining the body's internal balance.
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Charlotte Gonzales——Studied at the University of Cambridge, Lives in Cambridge, UK.
The waste that is collected combines with water (which is also filtered out of the kidneys) to make urine (pee). ... the kidneys: filters that take the waste out of the blood and make urine. the ureters: tubes that carry the urine from each kidney to the bladder. the bladder: a bag that collects the urine.read more >>
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