Nov 17, 2011 ... Each heartbeat has two basic parts: diastole (di-AS-toe-lee) and systole (SIS-toe-
lee). ... At the end of diastole, your heart's atria contract (atrial systole) and pump
... The cusps allow pumped blood to pass through the chambers and into ...
Oxygen-rich blood returns from the lungs to your heart's left atrium...
The heart is responsible for circulating blood throughout the body. ... made up of
muscle that can squeeze or pump blood out every time the heart "beats" or
contracts. Fresh, oxygen-rich air is brought into the lungs every time you take a
breath. ... circulates the blood through the lungs and out to the different parts of
Another wall separates the rounded top part of the heart from the cone-shaped
bottom part. ... They can squeeze (contract) to send blood rushing out. ... The
systemic loop begins when the oxygen-rich blood coming from the lungs enters
the ... The blood leaving the aorta brings oxygen to all the body's cells through
When a heart contracts and forces blood into the blood vessels, there is a certain
path that the blood follows through the body. ... The pulmonary artery carries the
blood that is very low in oxygen to the lungs, where it becomes oxygenated.
www.nakedscience.org/mrg/Anatomy Lecture Notes Unit 7 Circulatory System - The Heart.doc
The epicardium, or visceral pericardium, is actually part of the pericardium. ... The
left side of the heart pumps oxygen-rich blood (oxygenated), from the lungs to ...
Oxygen-poor blood from the body enters the right side of the heart through two ...
Occurs when the ventricles contract, closing the AV valves and opening the SL ...
Great vessels are the major vessels which directly carry blood into or out of the
heart. ... These veins return deoxygenated blood from the body into the heart,
emptying ... When the left ventricle contracts to force blood through the aortic
valve into the aorta, ... Oxygen-rich blood is shown in red; oxygen-depleted blood
Four types of valve regulate blood flow through your heart. ... for oxygen rich
blood to pass from the left ventricle into the aorta, your body's ... The right atrium
contracts and pushes the blood cells through the tricuspid valve into the right
ventricle. ... different arteries that pump the oxygenated blood to various parts of
Here's a simple mnemonic: arteries carry blood away from the heart. That's
helpful once we go ... The right ventricle then contracts, which forces the blood
out of the heart ... It's oxygen-rich blood, but it's not going away from heart, so it's
a vein. ... Arteries carry oxygenated blood from the lungs to the rest o...
The electrical activity spreads through the walls of the atria and causes them ...
This pathway of fibers sends the impulse to the muscular walls of the ventricles
and causes them to contract. This forces blood out of the heart to the lungs and
body. ... How fast the heart beats depends on the body's need for oxygen-rich
There are four chambers of the heart: a right atrium, a right ventricle, a left ... The
blood travels throughout the body, oxygenating and nourishing the .....
Inadequate development of an organ or part of an organ during pregnancy. ...
Tiny blood vessels between arteries and veins that distribute oxygen-rich blood
to the body.