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प्रश्न
Name the two waste products of the human body which are produced in the body cells.
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उत्तर
The two waste products of the human body are carbon dioxide and urea.
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संबंधित प्रश्न
_____________ secreted by the (ii) _____________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) ____________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) _____________ leading to the cause of a disease called (v) ______________.
Draw the well-labelled diagram of the human excretory system
The diagram given below is that of a structure present in a human kidney.
Study the same and answer the questions that follow:
1) Name the structure represented in the diagram
2) What is the liquid entering part ‘1’ called?
Name two substances present in this liquid that are reabsorbed in the tubule.
3) What is the fluid that comes to part ‘2’ called?
Name the main nitrogenous waste in it.
4) Mention the three main steps involved in the formation of the fluid mentioned in (iii) above
5) Name the substance which may be present in the fluid in part ‘2’ if a person suffers from Diabetes mellitus.
Differentiate between the following pair on the basis of what is indicated in the bracket.
Ureter and Urethra [function]
Define excretion. Name the excretory unit of a kidney.
Put a tick mark (✓) against the most appropriate alternative in the following statement :
In human beings, urea is produced in :
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Urine is devoid of blood cells.
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1 to 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:
Where does ultrafiltration take place?
Answer the following question:
Explain the human excretory system with the help of a suitable diagram.
The diagram below represents a mammalian kidney tubule (nephron) and its blood supply. Parts indicated by the guidelines 1 to 8 are as follows:
1. U-shaped loop of Henle
2. Proximal convoluted tubule with blood capillaries
3. Bowman’s capsule
4. Afferent arteriole from the renal artery
5. Glomerulus
6. Venule to the renal vein
7. Collecting tubule
8. Distal convoluted tubule with blood capillaries Study the diagram and answer the following questions in each case:
(i) Where does ultrafiltration take place?
(ii) Which structure contains the lowest concentration of urea?
(iii) Which structure contains the highest concentration of urea?
(iv) Which structure contains the lowest concentration of glucose?
(v) Where is the most water reabsorbed?
Name the Following
The substance found in excess in the urine of a diabetic patient.
Give Technical Terms
The hormone that helps increase the reabsorption of water from the kidney tubules.
Write the functional activity of the following structure:
Glomerulus
Write the functional activity of the following structure: Henle’s loop
Write the functional activity of the following structure: Renal artery
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
When uric acid is produced in excess, it gets deposited in joints, resulting in ____________.
Name the following;
Three nitrogenous wastes of our body.
Give reason:
Excretion is a necessary process of our body.
