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प्रश्न
Name the main nitrogenous waste in the human blood. How is it removed from the blood?
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उत्तर
The main nitrogenous waste in the human blood is urea. The kidneys remove the urea from the blood and excrete them in the form of a dilute solution called urine.
Kidneys are the main excretory organ of the human body. There are millions of nephrons in each kidney. Each nephron contains a renal corpuscle and a renal tubule. The renal corpuscle consists of capillaries called the glomerulus, enclosed by a capsule called Bowman's capsule. The blood is filtered in the glomerulus and the filtrate travels through the renal tubules. Here, the materials needed by the body are reabsorbed, while the wastes (like urea) are collected and excreted in the urine.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
The organs which extract the nitrogenous wastes from the blood are ..........
What is the function of excretory system in humans?
What is meant by dialysis? What type of patients are put on dialysis?
Given below is a set of five terms. Rewrite the terms in their correct order so as to be in logical sequence.
Afferent arteriole, renal vein, secondary capillary network, glomerulus, efferent arteriole.
Given below is a set of five terms. Rewrite the terms in their correct order so as to be in logical sequence.
Renal artery, urethra, ureter, kidney, urinary bladder.
If you donate one kidney to a needy patient, would it cause any harm to you? Give reason.
Differentiate between the following pairs of terms:
Bowman’s capsule and malpighian capsule.
Explain the difference between the excretory system of humans and plants.
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure contains the highest concentration of urea?
Name the Following
The blood vessels which brings pure blood to the kidneys:
Complete the following sentence with appropriate words:
The outer surface of the kidney is ______ while the inner surface is ______.
Write the functional activity of the following structure: Nephron
Write the functional activity of the following structure: Kidney
Choose the Odd One Out:
Choose the Odd One Out:
Hypotonic filtrate is formed in _______.
Osmoregulation maintains the osmolarity of blood at about ______.
“All plants give out oxygen during the day and carbon dioxide during the night”. Do you agree with this statement? Give a reason.
Give two examples of the following:
Bile pigments
The statement given below is false. Rewrite the correct form of the statement by changing the underlined word.
The pigment urochrome is the breakdown product of the haemoglobin of dead RBCs.
