Animal's Body & Organ Systems Education

Insects don’t have a brain like we do, but they do have clumps of nerves called ganglia in each body segment that are connected by a nerve cord.

Amphibians have a 3-chambered heart consisting of 2 atria and 1 ventricle, oxygenated and deoxygenated blood mixing is minimised by spongy walls of the heart.

Bettongs are foregut fermenters and have a long & large digestive tract to enable them to break down and absorb the nutrients of the plants they eat.

In order to sustain flight, birds have highly efficient respiratory systems with air sacs that permit a unidirectional flow of air through the lungs.

Breathing with a shell fused to your ribs may sound difficult, but turtle relax and contract the muscles around their lungs to force air in and out.

Snakes are infrequent eaters, and can quickly increase the size of their digestive system when food is available, and reduce it in size when fasting.

Bettongs are foregut fermenters and have a long & large digestive tract to enable them to break down and absorb the nutrients of the plants they eat.

Most reptiles have 3-chambered hearts, but the crocodile has 4 heart chambers, 2 atria and 2 ventricles, like the hearts of birds and mammals.