First slide

Events of Respiration

Question

Select the correct match.

Easy

A

Pulmonary gas exchange - Internal respiration
B

Systemic gas exchange - External respiration
C

Breathing - Pulmonary ventilation
D

Cellular respiration - Transport of gases by blood

Solution

Breathing or pulmonary ventilation is the process by which atmospheric air is drawn in and CO₂ rich alveolar air is released out.
Pulmonary gas exchange is also called external respiration while systemic gas exchange is called internal respiration.
Cellular respiration refers to the utilisation of O₂ by the cells for catabolic reactions and resultant release of CO₂ (not transport of gases).

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