CBSE Class 10 Answered
State the role of the following in the human respiratory system:
a) Nasal cavity
b) Diaphragm
c) Alveoli
Asked by adalroshan2464 | 16 May, 2019, 10:09: AM
Expert Answer
Role in the human respiratory system:
a) Nasal cavity: It warms, moisturizes, and filters air entering the body before it reaches the lungs.
b) Diaphragm: It contracts and flattens when you inhale. This creates a vacuum effect that pulls air into the lungs. When you exhale, the diaphragm relaxes and the air is pushed out of lungs.
c) Alveoli: They enable gaseous diffusion with blood capillaries.
Answered by Sheetal Kolte | 16 May, 2019, 11:25: AM
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