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प्रश्न
Answer the following question.
Why are kidneys called 'retroperitoneal'?
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उत्तर
Kidneys are located in abdomen. Kidneys are not surrounded by peritoneum instead they are located posterior to it. Thus, kidneys are called retroperitoneal.
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संबंधित प्रश्न
Sketch and label 'structure of nephron'.
Name the following:
A chordate animal having flame cells as excretory structures
Write constituents of urine.
Give Reasons for the Following:
It is necessary to maintain a normal osmotic concentration of blood
Explain the Term: Tubular reabsorption
If a person's urine report shows the presence of proteins, it indicates ______.
Match the parts given in Column I with their physiological processes given in Column II.
| Column I | Column II | ||
| i. | Proximal convoluted tubule | a. | Formation of concentrated urine |
| ii. | Distal convoluted tubule | b. | Filtration of blood |
| iii. | Henle's loop | c. | Reabsorption of 70-80% of electrolytes |
| iv. | Vasa recta | d. | Ionic balance |
| v. | Malpighian body | e. | Counter mechanism |
We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.
Where does the selective reabsorption of Glomerular filtrate take place?
Kidneys are vital organs for survival. Several factors like infections, injury or restricted blood flow to kidneys reduce the activity of kidneys. This leads to the accumulation of poisonous wastes in the body, which can even lead to death. In case of kidney failure, an artificial kidney can be used. An artificial kidney is a device to remove waste products from the blood through dialysis.
i. a. Name the artery that brings oxygenated blood to the kidney.
b. Name the cluster of the thin-walled blood capillaries present in the Bowman's capsule.
ii. In the human excretory system, name the organ which stores urine. Is this organ under hormonal control or nervous control?
iii. List two major steps involved in the formation of urine and state in brief their functions.
OR
iii. In which part of the nephron does selective reabsorption take place? List the factors which the amount of water reabsorbed depends on.
