Gas exchange IGCSE Biology

State the site for gas exchange

• bronchus

• alveoli

• alveolu

• bronchiole

Compare breathing and respiration

• breathing remove oxygen and gain carbon dioxide, respiration give energy

• breathing release energy from glucose, respiration oxygen exchange

• breathing is gas exchange, respiration is release energy

• breathing involves lung, respiration involve mitochondria only

Label 1

• nose

• nasal

• nasal cavity

• nose cavity

Label 3

• esophagus

• larynx

• pharynx

• epiglottis

Label 4

• trachea

• esophagus

• throat

• cartilage

Label 6

• bronchile

• bronchi

• bronchioles

• bronchus

Label 7

• rigth lung

• left lung

• bronchioles

• bronchus

Label 8

• bronchus

• bronchioles

• alvoelus

• alveoli

Label 10

• diafragm

• diaphragm

• curve muscles

• alveoli

What keep the airway open?

• ringed cartilage

• D-cartilage

• C-cartilage

• bony cartilage