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presentation in teaching science

mary ann barrios

on 7 March 2013

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Transcript of THE HEART

Intro Video Cardiovascular System THE HEART The cardiovascular system is responsible
for transporting nutrients and removing
gaseous waste from the body. Structures of the cardiovascular
system include the heart,
blood vessels, and blood. HEART The heart is the key
organ in the
system. As a hollow, muscular pump,
its main function is to propel
blood throughout the body. The heart has four chambers that
are enclosed by thick, muscular walls.
It lies between the lungs and just to
the left of the middle of the chest cavity. The upper part of the heart is made up
of the other two chambers of the heart,
called the right and left atria . The right and left atria receive the blood entering
the heart. A wall called the interatrial septum divides the atria, and they're separated from the ventricles by the atrioventricular valves. The bottom part of the heart is divided into two chambers called the right and left ventricles, which pump blood out of the heart. Their job is to squirt out the blood to the body and lungs. Running down the middle of the heart is a thick wall of muscle called the septum. The septum's job is to separate the left side and the right side of the heart. BLOOD FLOW THROUGH
THE HEART The tricuspid valve separates the right atrium
from the right ventricle The mitral
valve separates the
left atrium and the left ventricle. IMPORTANCE OF
DISEASES Enlargement of the heart An enlarged heart is a symptom
of an underlying disorder that is causing the heart to work harder
than normal. Congestive Heart Failure Congestive heart failure (CHF) is a condition in
which the heart's function as a pump is
inadequate to deliver oxygen rich blood
to the body. Hypertensive Heart Disease Hypertensive heart disease
refers to heart problems
that occur because of high
blood pressure. Valvular Heart Disease Heart valve disease occurs when
your heart's valves do not work
the way they should. Cyanotic Congenital Heart Disease Congenital heart disease is a category
of heart disease that includes abnormalities
in cardiovascular structures that occur
before birth. What are the risk factors
for heart disease? PATH TO A HEALTHY
Full transcript