Body Systems

Question 0

What are the 4 body systems?

Answer 0

Digestive
Reproductive
Circulatory
Respiratory

Question 1

Describe the route of blood around your body.

Answer 1

Blood from the body flows:
to the superior and inferior vena cava,
then to the right atrium
through the tricuspid valve
to the right ventricle
through the pulmonic valve
to the pulmonary artery
to the lungs
The blood picks up oxygen in the lungs, and then flows from the lungs:
to the pulmonary veins
to the left atrium
through the mitral valve
to the left ventricle
through the aortic valve
to the aorta
to the body

Question 2

What are the special features of the digestive system?

Answer 2

Mouth
Oesophagus
Stomach
Small intestine
Large intestine

Question 3

What are the special features of the reproductive system?

Answer 3

Ovum
Sperm
Uterus
Placenta

Question 4

What are the special features of the circulatory system?

Answer 4

Liquid, fluid like blood
Heart which pumps twice
Blood vessels
Organs like lungs, kidneys and intestines

Question 5

What are the special features of the respiratory system?

Answer 5

Lungs
Trachea
Bronchi
Diaphragm

Question 6

How does the foetus survive in the uterus?

Answer 6

The placenta is the source of nutrients and oxygen which also transfers waste products and carbon dioxide back to the mother from the fetus. It connects the umbilical cord to the baby (which does all the transferring from placenta to the fetus). Babies don’t need air as they have amniotic fluid in their lungs and get supplies of oxygen through the umbilical cord.