The respiratory system

What is the part of the lung that is commonly known as the windpipe ?

Trachea

What is the part of the lung where gas diffusion ( carbon dioxide and oxygen ) occurs ?

Alveoli

What is the purpose of the respiratory system?

To remove carbon dioxide from the body and take in oxygen

How does oygen enter the blood

through the capillaries

What is the main function of the alveoli

To filter air

What is the process by which particles move from an area of high concentration to low concentration called

Diffusion

What is the order by which air goes through the respiratory system

Nasal cavity, trachea,bronchi,bronchioles, alveoli

Fill in the gaps: As the diaphragm contracts it * and moves *

flattens, down

Fill in the gaps:The external intercostal muscles contract which lifts the ribs * and *

upwards, outwards

Fill in the gaps: The resulting in the volume of the thorax causes a * in the air pressure and fresh air is drawn * the lungs.

increase,decrease, into

Fill in the gaps: The diaphragm * and moves *

Relaxes, upwards

Fill in the gaps: The intercostal muscles relax and the ribcage drops * and *.

downwards, inwards

Fill in the gaps: This results in a * in the volume of the thorax and the air in the lungs is* .

Decrease, pushed out

What are lungs

The structure where gas exchange takes place

What are alveoli

The place where gas exchange between deoxygenated blood and oxygen takes place ( carbon dioxide out, oxygen in the blood stream)

what is the Diaphragm

This tightens (contracts) like a balloon to allow the lungs to expand and suck air in and relaxes to make the lungs smaller and push air out. 

What is the epiglottis

The flap that prevents food that is meant to go into the digestive system through the larynx from going into the trachea ( the windpipe) .