Body systems

What are the two stages that take part in the respiratory system?

• Diaphragm and lungs.

• Inhalation and exhalation.

• Bonchis and bronchioles.

• Pharynx and larynx.

When we breath in the diaphragm .....

• relaxes and rises.

• expands and rises.

• contracts and descends.

• relaxes and expands.

The carbon dioxide leaves the body from the _____________________ through the air passageways all the way back to the nose and mouth.

• nostrils

• heart

• air sacs

• diaphragm

Air sacs are surrounded by _________________

• capillaries.

• arteries.

• veins.

• bronchioles.

The air sacs expel _______________ when we exhale.

• nutrients.

• blood.

• oxygen.

• carbon dioxide.

What is responsible the circulatory system for?

• Transporting nutrients and gases throughout the body.

• Removing liquid waste from the body.

• Digesting the food.

• Carrying out gas exchange.

Blood consists of different types of cells in a clear liquid called _____________________.

• platelets.

• capillaries.

• heart.

• plasma.

What is the main function of the red blood cells?

• They carry oxigen from the lungs to all the body cells.

• They protect us from germs.

• They help to stop bleeding from wounds.

• They transport nutrients and waste products around the body.

How many types of blood vessels can we find?

• Arteries and platelets.

• Arteries,red blood cells and white blood cells.

• Arteries, capillaries and veins.

• Heart and capillaries.

What is the main organ of the cirtculatory system?

• Bladder.

• Veins.

• Stomach.

• Heart.