4 NS - Unit 4

Circulatory System

100

Blood carries these two things to our cells, and gets rid of unwanted substances

Nutrients and oxygen

200

Thin vessels that connect arteries and veins

Capillaries

300

A blood vessel that carries blood to the heart

Veins

400

A blood vessel that carries blood away from the heart

Arteries

500

The heart does this when it pushes blood through the arteries to the body

Contracts

Respiratory System

100

Carry air from the trachea to the bronchioles

Bronchi

200

The muscle that helps the lungs move

Diaphragm

300

Gas exchange takes place here

In the alveoli in the lungs

400

The diaphragm relaxes, lungs get smaller, carbon dioxide is pushed out of the body

Exhalation

500

Diaphragm contracts

Inhalation

Reproduction

100

Connects the baby to the mother

Umbilical cord

200

Organs that produce sperm

Testes, testicles

300

Internal organs that produce ova

Ovaries

400

The big bag where the baby grows

Amniotic sac

500

Connect the ovaries and uterus

Fallopian tubes

Sickness and Health

100

Eat lots of fruit and vegetables

Healthy diet

200

Sleep 9-10 hours a day

Rest

300

Try to remain fit, strong, and flexible

Physical exercise

400

Sit upright in your chair

Posture

500

Wash hands before meals

Hygiene