The protein which is red in color and present in blood is called

A sheet of muscles which contracts or flatten when we breathe is called

The blood vessels which carry blood away from heart to body parts are called

Bronchioles are further sub division of

The ribs moves upwards and outwards when we

More than half of total blood volume is the

The larger blood vessels which carry blood back to heart are

Ventricles are chambers of heart which are

The muscular organ which pushes blood to all parts of body is called

The organism which carry out both aerobic and anaerobic respiration is

The size of heart is about the size of

The special organ in mammals, birds and reptiles is

Platelets help in blood

The circulatory system of human is composed of

Insects breath through small holes in their body called

The external part of nose through which air enters is called

The air which we breathe in is called

There is surrounding of rich capillaries around

A pale yellow liquid in which blood cells n platelets are suspended is

The smaller sub divisions of arteries in many tiny blood vessels are called