Respiratory System

Front 1

Respiration

Back 1

The exchange of gas between the outside air and blood, involving specifically the transfer of oxygen and carbon dioxide

Front 2

Alveoli

Back 2

Primary gas exchange units of the lungs which are interconnected and surrounded by capillary networks. They are separated from pulmonary capillaries by a very thin barrier, allowing faster gas exchange via diffusion

Front 3

Trachea

Back 3

Otherwise known as the windpipe, it directs air down into the lungs

Front 4

Bronchi

Back 4

Into which air from the trachea is directed to branch into both lungs
Plural: bronchus

Front 5

Bronchioles

Back 5

The smaller branchings of the bronchus which have no internal cartilage

Front 6

Respiratory Bronchioles

Back 6

Provide the link between the lungs and the circulatory system for gas exchange. Each bronchiole leads to an alveolar duct which leads into an alveoli

Front 7

Advantage of Bronchiole Tree

Back 7

Provides an extremely large surface area across which gases can be exchanged

Front 8

Oxygen Diffusion

Back 8

Oxygen travels from the air in the alveoli across the alveolar-capillary membrane into the blood, combining with haemoglobin in RBCs

Front 9

Carbon Dioxide Diffusion

Back 9

Carbon dioxide travels from the blood (mainly from the plasma) across the alveolar-capillary membrane into the air in the alveoli

Front 10

Alveolar Diagram

Back 10

Front 11

Lung Diagram

Back 11