how does nephron play an important role in the urine formation for class 7
Answers
Answer:
Explanation:
The main structures that make up the urinary system are two kidneys (contains nephrons), two ureters, one bladder, one urethra, arteries and veins.
The ureter connects the kidney to the bladder. The bladder is storage for urine. Urine is excreted to the outside of the body through the urethra.
The Main Structures of the Urinary System
The Main Structures of the Urinary System
Kidney
The kidneys are two bean-shaped organs located outside the peritoneum at the posterior of the upper abdomen. The kidneys are located one on each side of the vertebral column and are protected by the ribs and a layer of fat. The renal artery, renal vein and ureter connect to the kidney at the indented media border called the hilus.
Besides Urine Formation, the kidney has the following functions:
Plays a major role in regulating blood volume because it controls the amount of water to be excreted and the amount of water to be reabsorbed.
Regulates electrolytes in the blood by controlling the secretion and reabsorption of sodium and potassium ions.
Regulates the pH of the blood by controlling the secretion and reabsorption of hydrogen ions. When more hydrogen ions are excreted from the blood, it renders the blood less acidic (more alkaline). But if more hydrogen ions are retained in the blood, this renders the blood more acidic (less alkaline).
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