One of these organs does not belong to the human circulatory system:
1) The heart
2) The kidney
3) The arteries
4) the auricles
What is the main function of the arteries?
1) To carry oxygen from the lungs to the brain.
2) To transfom carbon dioxide into oxygen
3) To carry blood to all parts of the body
4) To pump blood to the brain
What does the human circulatory system consist of?
1) Blood, veins and arteries
2) Blood vessels, heart and veins
3) Capillaries, veins and arteries
4) Auricles and ventricles
How much blood is there in an average human body?
A_ Six litres.
B_Three litres
C_ Four litres
The organ that pumps blood is the:
A_ The lung
B_ The head
C_ The heart
D_ The kidney
The capillaries are parte of the :
Respiratory system
Circulatory system
Digestive system
Thick, red and liquid are characteristics of:
A_ Veins
B_ Heart
C_ Blood
One of these animals does not have hot blood:
A_ Snake
B_ Elephant
C_ Bear
While arteries are large tubes,
A_ Capillaries are huge tubes
B_ Veins are narrow tubes
C_ The heart is a cone_shaped organ
