Urinary System
Question 1: Identify the kidney’s functional unit.
Answer:
The anatomical and operational component of our kidneys is called a nephron.
Question 2: What kinds of waste do living things get rid of?
Answer:
Living things excrete three types of wastes: ammonia, urea, and uric acid. These chemical reactions produce waste materials such as carbon dioxide, water, salts, urea, and uric acid. The body suffers harm when these wastes build up outside of it. The excretory organs eliminate these wastes. The method by which metabolic waste is expelled from the body is called excretion.
Question 3: What crucial roles do the human excretory system’s organs play?
Answer:
The elimination of wastes, the removal of waste byproducts generated by the cells, preventing the buildup of hazardous chemicals in the body, and maintaining a balanced chemical concentration in the body are all critical tasks carried out by the excretory system.
Question 4: Identify the main excreted product.
Answer:
As urea is the main excretory product, humans are ureotelic creatures.
Question 5: What procedures are involved in getting rid of waste?
Answer:
The processes of glomerular filtration, reabsorption, and secretion are all part of waste elimination. These procedures just purge the body’s surplus water and waste.
Human Urinary System
The process of removing chemicals from the body is known as excretion. Numerous cellular reactions generate diverse excretory products such as urea, uric acid, creatinine, bilirubin, and ammonia. Protein and nucleic acid metabolism’s breakdown products are these excretory by-products. These excretory products need to be removed from the body since a build-up of them can cause a variety of diseases. The three main excretion organs are the kidneys, large intestine, and skin.
Excretory products are eliminated through a variety of methods, including:
- Sweating: Salts, carbon dioxide, urea, and ammonia are all eliminated in very minute quantities through sweat.
- Urine: Urea, uric acid, creatinine, and ammonia are excreted by the kidneys through urine. Urine is also used to eliminate extra ions including Ca2+, Na+, and phosphates. Urine is used for the excretion of numerous medications, poisons, and even too much water.
- Feces: The body excretes minute amounts of water, inorganic salts, bacteria, byproducts of bacterial decomposition, undigested substances, and indigestible food components in feces. The majority of the bilirubin in bile is processed by bacteria in the small intestine and expelled in feces.
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