[DOC] [TLE] The Heart and Blood Vessels. Patient information leaflet | Patient [PAR] The heart is a muscular pump that pushes blood through blood vessels around 
the body. ... cells. Carbon dioxide is passed out of the body by the lungs; most of 
the other waste ... Here oxygen and other nutrients pass into the cells where they 
are used to perform the ... Arteries carry blood away from the heart to other 
organs. [DOC] [TLE] The Heart - BiologyGuide [PAR] The left and right sides of the heart actually contract simultaneously but in order 
to ... The pressure of the blood in the aorta is higher than pulmonary artery; The 
left ... the blood being forced back into the chamber from which it was just pushed 
out. ... This refers to changes in the electrical activity of the heart muscle cells. [DOC] [TLE] THE CIRCULATORY SYSTEM - LeavingBio.net [PAR] Blood is pushed through the veins when body muscles contract and squeeze the 
... They surround the body cells at the ends of the arteries and at the beginning of 
... There are networks of capillaries in most of the organs and tissues of the body. 
... valves allow the blood to flow out of the heart into the 2 main arteries (aorta... [DOC] [TLE] The Heart and Circulation of Blood [PAR] picture of the body and some of its organs ... The heart is made of muscle. ... First, 
the blood flows into tubes called arteries. ... blood cells can then pass easily 
through the walls of the capillaries to deliver the oxygen they carry to nearby cells
. ... When the heart contracts it pushes the blood out into two major loops or 
cycles. [DOC] [TLE] Human Physiology/The cardiovascular system - Wikibooks, open ... [PAR] The myocardium is composed of specialized cardiac muscle cells with an ... the 
heart enters a phase called systole, and the atrium pushes blood into the .... 
Capillaries are the smallest of a body's vessels; they connect arteries and ..... This 
causes the muscle tissue of the ventricles to contract and force blood out of the 
heart... [DOC] [TLE] The Cardiovascular System - Nursing Link [PAR] The right ventricle pumps blood into the pulmonary artery on its way to the .... 
When the atria contract, they force the remaining blood contained in them to flow 
into ... to effectively complete each cardiac cycle, cardiac muscle cells must 
contract .... that is actually forced out of the left ventricle into the aorta during 
contraction. [DOC] [TLE] How does the heart pump blood? - Heart & Circulatory System ... [PAR] The blood is then pushed through the valves. ... The heart is divided into four 
chambers: the right atrium, the right ventricle, the left atrium and the left ventricle. 
... When the heart muscle contracts (or beats), it is pumping blood out of the heart. 
... it can pump it to the body so cells have the oxygen they need to function 
properly. [DOC] [TLE] B5.2 Revision notes [PAR] The heart is a pump, made of muscle, which moves blood around the body;; The 
muscle ... The semilunar valves allow blood to move into the arteries and prevent 
backflow ... it needs to build up enough pressure to send the blood to all the main 
organs (not ... When they contract, heart becomes smaller, squeezing blood out. [DOC] [TLE] Human Heart  Diagram and Anatomy of the Heart - InnerBody [PAR] The heart is a muscular organ about the size of a closed fist that functions as ... 
into the various arteries (which provide oxygen and nutrients to body tissues ... 
the walls of the ventricles, stimulating the cardiac muscle cells to contract in a ... 
During systole, cardiac muscle tissue is contracting to push blood out of the 
chamber. [DOC] [TLE] How the Heart Works - CardioSmart [PAR] Its walls are made up of muscle that can squeeze or pump blood out every time ... 
The right side of the heart (RA and RV) is responsible for pumping blood to the 
lungs, where the blood cells pick up fresh oxygen. ... The increased pressure 
shuts the tricuspid valve and blood is pumped into the pulmonary artery (
pronounced... [DOC] [TLE] The Cardiovascular System [PAR]

Question: When cardiac muscle cells contract, they push blood out of this organ and into the arteries
Answer: Heart