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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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Lungs are made up of air-filled sacs, the alveoli . They do not collapse even after forceful expiration because of

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Volume of air remaining in the lungs even after a forcible expiration is

In a normal healthy individual, the volume of air remaining in the lungs even after forcible expiration is about

(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 ?

Knowledge Check

  • 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 ?

    A
    `(i)` and `(iv)`
    B
    `(ii)` and `(iii)`
    C
    `(i)` and `(ii)`
    D
    `(iii)` and `(iv)`

  • 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 ?

    A
    `(3)`-vital capacity, `(4)-4000` mL, `(5)-500, (6)-`tidal
    B
    `(1)-100`, `(2)`-residual volume, `(3)-`functional residual capacity, `(4)-3000 mL`
    C
    `(1)-350`, `(2)`-dead space air, `(5)-1000, (6)`-inspiratory reserve
    D
    `(1)-350`, `(2)`-residual volume, `(3)-`vital capacity `(4)-4000 mL`
    • AAKASH SERIES-BREATHING AND EXCHANGE OF GASES -EXERCISE-III (Previous AIPMT/NEET Questions)
    1. Lungs are made up of air filled sacs the alveloi they do not collase ...

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    2. Which of the following cannot be measured by spirometry?

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    3. A pollution can result in Emphysema, which is

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    4. Name the chronic respiratory disorder caused mainly by cigarette smoki...

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    5. Reducing in pH of blood will

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    6. The partial pressure of oxygen in the alveoli of the lungs is

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    7. Lungs do not collapse between breaths and some air always remains in t...

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    8. In which disease due to narowing of tracheal passages alveoli are depr...

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    9. When you hold your breath, which of ~he following gas changes in blood...

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    10. Approximately seventy percent of carbon dixode absorbed by the blood w...

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    11. The figure shows a diagrammatic view of human respiratory system with ...

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    12. Which one of the following is the correct statement for respiration in...

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    13. Why people migrate from place to place? Is there any families migrate ...

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    14. A large proportion of oxygen remain unused in the human blood even aft...

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    15. The figure given below shows a small part of human lung where exchange...

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    16. Bulk of carbon dioxide (CO(2)) released form body tissues in to the b...

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    17. Which one of the following is a possibility for most of us in regard t...

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    18. Which of the following statement is true about RBCs in humans?

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    19. Listed below are four respriatory capacities (i-iv) and four jumbled ...

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    20. What is vital capacity of our lungs ?

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