Science Circulatory system year 6

Heart is a powerful _____________

• vessel

• Organ

• system

• muscle

Heart is situated between your ___________

• lungs

• Kidney

• stomach

• none of the above

Heart is protected by _____________

• Organ system

• Bones

• Ribcage

• All of the above

The heart pumps blood to the lungs to get_________

• water

• air

• oxygen

• none of the above

The heart pumps the ___________ blood to the rest of the body.

• oxygenated

• red blood cells

• good

• bad

When we breathe in (inhale), the intercostal muscles _______________ and the diaphragm pulls down, making the chest expand.

• contract

• expands

• separates

• all of the above

The intercostal muscles and diaphragm then___________and the air is pushed out of the lungs (exhale) as the ribcage falls downward and inhale.

• relax

• separates

• joins

• pushes

Air breathed in through the mouth or nose travels down the ______________

• lungs

• kidney

• trachea

• system

The air travels into the ________________ and into the air sacs (alveoli).

• bronchioles

• diaphragm

• heart

• internal muscle ribs

The oxygen is absorbed into the blood through a layer of moisture in the air sacs ______________

• lungs

• heart

• blood vessel

• alveoli.