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Lungs are made up of air filled sacs th...

Lungs are made up of air filled sacs the alveloi they do not collase even after forceful expeiration because of

A

Residual Volume

B

Inspiratory Reserve Volume

C

Tidal Volume

D

Expiratory Reserve Volume

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The correct Answer is:
A
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Lungs are made up of air-filled sacs, the alveoli . They do not collapse even after forceful expiration because of

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The volume of air present in the lungs after forceful expiration is called as

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(i) Tidal volume is 500 ml per min (ii) The respiratory rhythm centre lies in the medulla oblongata. (iii) The trachea, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings. (iv) The volume of air remaining in the lungs even after a forcible expiration is functional residual capacity. How many of the above statements are correct?

Read the following four statement (i) - (iv) with certain mistakes in two of them. (i) A water breather expends much more energy in ventilating its respiratoru surface than an air-breathing one. (ii) Lungs become empty after forceful expiration. (iii) Exchange of gases in the lungs are interrupted during expiration. Respiratory movement are controlled by CO_(2) concentration of arterial blood. Which of the above two statements have mistakes ?

Air entering the lungs ends up in tiny sacs called alveoli.From the alveoli, the oxygen diffuses into the blood. The average radius of the alveoli is 0.0050 cm and the air inside contains 14 per cent oxygen. Assuming that the pressure in the alveoli is 1.0 atm and the temperature is 37^(@)C , calculate the number of oxygen molecules in one of the alveoli.

Consider the following statements each with two blanks. (i) Actually, only about overset((1))"_____" mL of air enters the lungs alveoli for the exchange of gases. The remaining fills the respiratory passage and is termed overset((2))"_____" . (ii) The amount of air which one can inhale with maximum effort and also exhale with maximum effort is termed as overset((3))"_____" . It is about overset((4))"_____" in normal adult person. (iii) During normal quiet breathing, on an average, approximately overset((5))"_____" mL of air is inspired or expired by adult human male in each breath. It is termed as overset((6))"_____" volume. Which of the following options gives the correct fill ups for the respective blanks numbers from (1) to (6) in the above statement ?

AAKASH INSTITUTE ENGLISH-DIGESTION AND ABSORPTION -Assignment (SECTION-C )
  1. Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

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  2. Lungs are made up of air filled sacs the alveloi they do not collase ...

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  3. The primary dentition in human differs from permanent dentition in not...

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  4. Which of the following option best represents the enzyme composition o...

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  5. Which of the following guards the opening of hepatopancreatic duct int...

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  6. In the stomach, gastric acid is secreted by the

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  7. The primary dentition in human differs from permanent dentition in not...

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  8. The enzyme that is not present in succus entericus is

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  9. Which of the following statement is not correct?

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  10. Gastric juice of infants contains

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  11. The initial step in the digestion of milk in hu- mans is carried out b...

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  12. Fructose is absorbed into the blood through mucosa cells of intestine ...

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  13. Select the correct match of the digested products in humans given in c...

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  14. Where do certain symbiotic microorganisms normally occur in human body...

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  15. Anxiety and eating spicy food together in an otherwise normal human, m...

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  16. The initial step in the digestion of milk in hu- mans is carried out b...

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  17. Two friends are eating togeather on a dinning table. One of them sudde...

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  18. Which one of the following correctly represents the normal adult human...

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  19. In humans one of the constituents of the pancreatic juice which is po...

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  20. If for some reason our goblet cells are non-functional, this will adve...

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