Download Circulatory System

Circulatory System
Most of the cells in the human body are Not in direct contact with the external environment. The
circulatory system acts as a transport service for these cells.
The Heart can be thought of as TWO PUMPS sitting side by side. The Human Heart, with a Right Atrium
and Right Ventricle, as well as a Left Atrium and Left Ventricle, essentially has TWO Separate Hearts
inside one
The RIGHT SIDE of the Heart pumps Blood From The BODY TO THE LUNGS (Oxygen poor)
The LEFT SIDE of the Heart pumps OXYGEN RICH BLOOD from the LUNGS TO THE BODY (oxygen rich)
Our Heart has FOUR CHAMBERS:
The UPPER CHAMBERS of the Heart are the RIGHT AND LEFT ATRIA (ATRIUM), RECEIVE
BLOOD COMING INTO THE HEART.
The LOWER CHAMBERS are the RIGHT AND LEFT VENTRICLES, PUMP BLOOD OUT OF THE
HEART. The Left Ventricle is the Thickest chamber of the heart because it has to do most of the work to
pump blood to all parts of the body.
THE LYMPHATIC SYSTEM
As Blood Circulates throughout the body, Fluid from the Blood LEAKS into tissue. A NETWORK OF
VESSELS KNOWN AS THE LYMPHATIC SYSTEM COLLECTS THE FLUID (cleans it) AND
RETURNS IT TO THE CIRCULATORY SYSTEM.
RED BLOOD CELLS (RBC) ERYTHROCYTES
WHITE BLOOD CELLS (WBC) LEUKOCYTES
PLATELETS AND BLOOD CLOTTING
BLOOD TYPES
. Platelets