The Transport System { 2}

mammals have ___ in which the blood is pumped by a powerful muscular heart and circulated in a continuous system of tubes -arteries, veins and capillaries- under pressure.

The heart is divided into four chambers and blood flows from the ___ side of the heart to the ___ and then back to the ___ side.

As blood passes ___ through the heart, it is called a ___ circulation.

Advantages of the circulatory system of mammals are:

Blood is a special tissue consisting of a liquid medium called ___ in which ___ ( red cells), ___ (white cells) and ___ are suspended.

The erythrocytes are in the transport of reparatory gases.

Plasma transports:

Erythrocytes transport:

Lymphocytes..

Phagocytes..

platelets..

Arteries carry blood to the heart.

Arteries carry blood away from the heart and veins do the opposite.

Capillaries are..

Both arteries and veins have strong walls, but the walls in veins are much thicker and stronger.

In comparison to arteries and veins where the walls are strong due to the presence of ___ , capillaries' walls only consist of ___.

Veins have valves at intersections to prevent backflow.

The ___ side of the heart pumps ___ blood to the ___, and the arteries, veins and capillaries serving the ___ are known as ___ circulation.

Arteries, veins and capillaries serving the ___ side of the heart by taking blood to ___ are known as the ___ circulation.

arteries connect to the main ___ and veins join the ___ carrying blog back to the heart.

The branching sequence for circulation is: