Respiratory system and circulatory system

Circulatory System

Respiratory system

Nose

Windpipe

Lungs

Allows air to enter and leave the body

Contains hair and mucus to trap the dirt in the air

Air that passes through is also warmed and moistened

Contains air sacs

Allows exhange of gases in the air sacs

Picks up oxygen from inhaled air

Passes carbon doixide into exhaled air

transfers the air from the nose to the lungs

Heart

How do animals exchange gas?

Insects/Arachnids

Fish

Birds

Mammals

Amphibians

Lungs and skin

Some amphibians such as the salamander take in oxygen through their gills

Frogs can breathe through their moist skin. When they are underwater they use their moist skin to breathe instead of their lungs

Have lungs and they take in air through their nostrils

Openings that lead to tubes (breathing tubes) which carry oxygen to their internal organs

Take in oxygen through their gills

Water containing dissolved oxygen enter the mouth of the fish. It washes over the gills and the oxygen enters the blood in the gills

As water flows out from under the gill covers,carbon dioxide from the blood is carried away

Have lungs and they take in air through their nostrils

Some mammals such as whales and dolphins also have lungs but they breathe through blowholes on top of their head

Oxygen is taken in through the nose and enters the lungs through the windpipe

Gaseous exchange occur

Carbon dioxide in the lungs is transported out of the body through the nose

Blood vessels

Blood

Transports digested food, oxygen, water, carbon dioxide and other waste materials to the different parts of the body

Pumps blood to all parts of the body

Carry blood from our heart to all parts of our body

Carry blood from other parts of our body back to the heart