Unit 4

They contain haemoglobin and transport oxygen to the cells.

• Nephrons

• Red blood cells

•  White Blood cell

• Platelets

They protect our body from infections.

• Myocardium

• Red blood cells

• White Blood cel

• Lungs

They transport oxygenated blood to all the tissues:

This has pieces of cartilage, one of which is the epiglottis that prevents food from entering the respiratory tracts

• Pharynx

• larynx

• tricuspid valve

• bronchioles

They help coagulate blood.

• Heart

• Red blood cells 

• Aorta

• Platelets

They are the most important excretory organs. 

• Lungs

• Kidneys

• Liver

• Swet glands

It is the name of the cardiac heart muscle.

• Pericardium

• systole

• Myocardium

• tricuspid valve

These divide into microscopic branches that end in alveoli.

• Trachea

• Bronchi

• Bronchioles

• Larynx

They transport deoxygenated blood from tissues to the heart.

• Capillaries

• Arteries

• Veins

• Arterioles

They are structures that filter the blood of the whole organism.

• Bronchies

• Alveoli

• Nephrons

• swet glands