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The exchange of gases in the alveoli of ...

The exchange of gases in the alveoli of the lungs takes place by

A

passive transport

B

active transport

C

osmosis

D

simple diffusion.

Text Solution

Verified by Experts

The correct Answer is:
D
The exchange of gases in the alveoli of the lungs takes place by simple diffusion. The exchange of gases between the alveoli and blood in the lung is the result of difference in partial pressure of respiratory gases.
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Knowledge Check

  • The exchange of gasses in the alveoli of the lungs takes place during respiration. Identify the labeling a-e

    A
    a- Air flows into and out of alveoli
    b-Deoxygenated blood
    c-oxygenated blood
    d-oxygen diffuses into red blood cells
    e-Carbon dioxide diffuses out of the plasma
    B
    a- Air flows out of alveoli
    b- oxygenated blood
    c-Deoxygenated blood
    d-oxygen diffuses into red blood cells
    e-Carbon dioxide diffuses out of the plasma
    C
    a- Air flows into and out of alveoli
    b-Deoxygenated blood
    c-oxygenated blood
    d-Carbon dioxide diffuses out of the plasma
    e-oxygen diffuses into red blood cells
    D
    a- Air flows out of alveoli
    b- oxygenated blood
    c-Deoxygenated blood
    d- Carbon dioxide diffuses out of the plasma
    e- oxygen diffuses into red blood cells

  • The exchange of gases in a mammal takes place

    A
    trachea
    B
    bronchioles
    C
    bronchi
    D
    alveoli

  • The alveoli of lungs are lined by

    A
    Simple epithelium
    B
    Squamous epithelium + tunica media blood vessel
    C
    Cuboidal epithelium
    D
    Columnar epithelium

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