MS2: Respiratory System by Smruti

_____________ are the main part of the respiratory system.

• Heart

• Lungs

• Stomach

• Small Intestine

We breathe in ​ ​ (a)   and we breathe out​ (b)  

• Oxygen
• Carbon dioxide

Reorder the following

• Air sacs (Alveoli) present at the end of bronchioles helps in exchange of oxygen and carbon dioxide

• We breathe in air through the nose.

• Air enters the smaller tubes called bronchioles.

• Air passes through the wind pipe.

• Air moves through the bronchi.

Match the following

• Bronchioles

• Smaller tubes that are extensions of the bronchi.

• Bronchi

• These are the two tubes that go into the lungs.

• Nose

• Small air sacs at the end of the bronchioles where the exchange of oxygen and carbon dioxide takes place.

• Alveoli

• Windpipe is also called____

• Trachea

• It has hair that stops dust and bacteria from going inside our body.

Locate Windpipe (Trachea)

Locate Bronchioles

(Clue: Smaller tubes that are extensions of the bronchi)

Locate Alveoli

(Clue: Small air sacs at the end of the bronchioles where the exchange of oxygen and carbon dioxide takes place.)

Locate Diaphragm

(Clue: A dome-shaped muscle that helps in breathing.)