...carries blood away from your heart under high pressure.

What kind of relationship is this:
Nemo will snuggle unharmed among the stinging tentacles of the anemone.  The fish obtains protection and sometimes brings food to the anemone.

What is the job of the adult?

What is the correct sequence for blood being pumped from the heart to the lungs?

The skeletal system is made up of

There is a pigment containing iron in the red blood cells called..

Animals that are active at dawn and dusk are called..............

Why is the circulatory system of mammals described as a double circulation?

Plants and animals both have life cycles.

The most common blood group is

...is pumped in to the heart

The diagram shows a section through the heart.
Which part pumps blood to the aorta?

...are the smallest blood vessels

Which blood vessel has a high carbon dioxide concentration, a low oxygen concentration and a high blood pressure?

..blood cells help us to fight infections by eating bacteria and other foreign matter.

The heart has ... chambers.

..in the heart to prevent the blood from flowing backwards, keeping it in one direction.

An organism that is fully grown is called

The nymph looks like the adult, but usually has no

This is the process that creates glucose using energy from the sun in animal cells.

Where does haemoglobin become oxyhaemoglobin?