(A) The diffusion membrane is made up of three major layers:$(1)$ The thin squamous epithelium of the alveoli.$(2)$ The endothelium of the alveolar ca

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Squamous epithelium of alveoli,endothelium of alveolar capillaries,and basement membrane.

(A) The diffusion membrane is made up of three major layers:$(1)$ The thin squamous epithelium of the alveoli.$(2)$ The endothelium of the alveolar capillaries.$(3)$ The basement substance (basement membrane) in between them.These three layers together have a total thickness of less than a millimeter,which facilitates the rapid diffusion of oxygen and carbon dioxide.

Class 11 Biology Breathing and Exchange of Gases Exchange of gases

Medium

The diffusion membrane is made up of which layers?

A
Squamous epithelium of alveoli,endothelium of alveolar capillaries,and basement membrane.
B
Columnar epithelium of alveoli,endothelium of alveolar capillaries,and basement membrane.
C
Squamous epithelium of alveoli,mesothelium of alveolar capillaries,and basement membrane.
D
Cuboidal epithelium of alveoli,endothelium of alveolar capillaries,and basement membrane.

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Class 11

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Chapter

Breathing and Exchange of Gases

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Exchange of gases

Arrange the appropriate pair.
Column-$I$ Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)
$(a)$ Alveoli $(1)$ $40$
$(b)$ Tissue $(2)$ $45$
$(c)$ Blood without $O_2$ (Deoxygenated) $(3)$ $40$
$(d)$ Blood with $O_2$ (Oxygenated) $(4)$ $45$

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How many layers are present in the diffusion membrane of the alveolus capillary?

Medium

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The given figure shows a small part of the human lung where gas exchange occurs. Identify the part $A, B, C,$ or $D$ correctly with its function from the given options.

Medium

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The rate of diffusion of gases can be affected by $-$

Easy

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Gaseous exchange in land plants takes place through stomatal openings,while in submerged hydrophytes it takes place by

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Column-$I$	Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)
$(a)$ Alveoli	$(1)$ $40$
$(b)$ Tissue	$(2)$ $45$
$(c)$ Blood without $O_2$ (Deoxygenated)	$(3)$ $40$
$(d)$ Blood with $O_2$ (Oxygenated)	$(4)$ $45$

The diffusion membrane is made up of which layers?

Similar Questions

Arrange the appropriate pair.Column-$I$Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)$(a)$ Alveoli$(1)$ $40$$(b)$ Tissue$(2)$ $45$$(c)$ Blood without $O_2$ (Deoxygenated)$(3)$ $40$$(d)$ Blood with $O_2$ (Oxygenated)$(4)$ $45$

How many layers are present in the diffusion membrane of the alveolus capillary?

The given figure shows a small part of the human lung where gas exchange occurs. Identify the part $A, B, C,$ or $D$ correctly with its function from the given options.

The rate of diffusion of gases can be affected by $-$

Gaseous exchange in land plants takes place through stomatal openings,while in submerged hydrophytes it takes place by

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Arrange the appropriate pair.
Column-$I$ Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)
$(a)$ Alveoli $(1)$ $40$
$(b)$ Tissue $(2)$ $45$
$(c)$ Blood without $O_2$ (Deoxygenated) $(3)$ $40$
$(d)$ Blood with $O_2$ (Oxygenated) $(4)$ $45$