Always talking about bad kidneys. Do you really know about kidneys?
What is the kidney? the kidney is often said, "it is the organ that makes urine. It undertakes the task of removing waste from the blood and keeping the blood clean. People have two kidneys on the left and right." The left kidney is slightly higher, and the blood flow through the kidney accounts for about 24% of cardiac output. An average of 1200 milliliters of blood flows into the kidneys every minute for filtration, and the blood in the body flows through the kidneys about 300 times. In order to timely intercept the waste produced by metabolism and excess water and salt in the body, and then into urine excreted out of the body, the kidney is an important organ of the human body? Filter and remove metabolites and some wastes and poisons in the body: retain useful substances in the human body 2 to regulate water saving, electrolyte balance and maintain alkali balance 3 endocrine functions, the production of renin, erythropoietin, active vitamin D3, prostaglandin, kinin, etc., but also for the degradation of some endocrine hormones in the body and the target organs of extra-renal hormones, these functions of the kidney.
What's a kidney?
Kidney is what people often call "kidney". It isThe organ that makes urine.Bear the burden ofRemove waste from the blood and keep the blood cleanThe task is compared to that in the human body."cleaning machine".
Where is the kidney?
People have left and right sides.Two.The kidney, located on both sides of the spine, is close to the posterior wall of the abdomen, and the position of the left kidney is slightly higher.
The kidney is about the size of the fist, and the blood flow through the kidney accounts for about the output of the heart.24%An average of 1200 milliliters of blood flow into the kidneys every minute for filtration.
During the day and night, the blood in the body flows through the kidneys.300 times.In order to timely intercept the waste produced by metabolism and excess water and salt in the body, and then turn into urine and excreted out of the body.
What is the main function of the kidney?
Therefore, the kidney is an important organ of the human body.With:
one
Produce urineTo filter and remove metabolites and some wastes and poisons in the body, and retain useful substances for the human body
two
Adjust water and electrolyte balance and maintain alkali balance
three
Endocrine function, production of renin, erythropoietin, active vitamin D3,Prostaglandin、KininAnd so on, but also for the degradation of some endocrine hormones in the body and extrarenal hormones.Target organ.
These functions of the kidney ensure that the bodyInternal environmentThe stability of metabolism can be carried out normally.
So what is the structure of the kidney?
There is a depression on one side of the kidney, called the renal hilum, where the renal vein and renal artery enter and leave the kidney and where the ureter connects with the kidney. These structures entering and leaving the renal hilum are wrapped in connective tissue, collectively known as the renal pedicle. From the fovea of the renal hilum to the kidney, there is a larger cavity, called renal sinus. The renal sinus is surrounded by renal parenchyma and contains renal artery, renal vein, lymphatic vessel, renal calyx, renal dilatation, renal pelvis and adipose tissue.
Each kidney consists of more than 1 million nephron. Each nephron consists of three parts: glomeruli, renal vesicles and renal tubules. Glomeruli and renal vesicles form renal corpuscles.
It can be seen that the kidney plays an important role in the human body. once there is renal failure, patients may rely on dialysis or kidney transplantation to survive. Therefore, we must protect the kidneys. Pay attention to the kidney, too!