Y8 Respiratory System

Where does gaseous exchange happen in the lungs

(a)  

By what process does gaseous exchange happen

• Diffusion

• Gravity

• Osmosis

• Gas pressure

What connects the nose and mouth to the lungs

• Oesophagus

• Trachea

• Bronchioles

• Alveoli

How is are the alveoli adapated for efficient gaseous exchange?

• Small surface area

• Large surface area

How are the alveoli adapated for efficient gaseous exchange

• Covered in capillaries (good blood supply)

• Not a good blood supply

What type of cell transports oxygen around the body?

• Red blood cell

• White blood cell

• Blood cell

• Muscle cell

The trachea is held open by rings of .....

• Muscle

• Tendons

• Cartilage

• Ligaments

How are the alveoli are adapated for gaseous exchange?

• They are thick (long diffusion pathway)

• They are one cell thick (short diffusion pathway)

What molecule do red blood cells contain that make oxygen attracted to it?

• Haemoglobin

• Biconcave

• Hemoglubin

Why does our body need oxygen?

• Respiration

• Photosynthesis

• Diffusion

• Digestion