TheCardiovascularSystem The cardiovascular system carries needed substances to cells and carries...
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- TheCardiovascularSystem The cardiovascular system carries
needed substances to cells and carries waste products away from
cells. In addition, blood contains cells that ght disease.
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- Is a muscle about the size of your fist Weighs approximately
one pound Is located behind and slightly to the left of the
breastbone Pumps about 5 quarts (4.7 liters) of blood every
minute
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- The heart is a hollow, muscular organ that pumps blood
throughout the body. The right side of the heart is completely
separated from the left side by a wall of tissue called the septum.
Each side has an upper chamber, or atrium, and a lower chamber, or
ventricle.
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- As blood ows outof the heart andtoward thelungs, it passes
through a valve like the one here.
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- Two Loops Blood circulates through the body in two loops, with
the heart at the center. In the rst loop, blood travels from the
heart to the lungs and then back to the heart. In the second loop,
blood is pumped from the heart throughout the body and then returns
to the heart.
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- Sequencing Pathway of Blood
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- Introduction to Cardiovascular System Three Types of Blood
Vessels Arteries Carry blood away from heart Veins Carry blood to
heart Capillaries Networks between arteries and veins
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- BloodVessels The walls of arteries and veins have three layers.
The walls of capillaries are only one cell thick.
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- Artery and Vein In this photo, you can compare the wall of an
artery with the wall of a vein.
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- Blood VesselFunctionStructure of Wall Comparing and Contrasting
Compare and contrast the three kinds of blood vessels by completing
a table like the one below. Artery Carries blood away from the
heart Thick wall consisting of three cell layers with thick muscle
in the middle layer Capillary Exchange of materials between the
blood and body cells Thin walls consisting of one cell layer Vein
Carries blood back to the heart Thick walls consisting of three
cell layers with thin muscle in the middle layer - A Closer Look at
Blood Vessels
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- Blood Blood consists of liquid plasma and three kinds of
cellsred blood cells, whiteblood cells, and platelets.
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- Formed Elements of Blood
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- Blood Types The marker molecules on your red blood cells
determine your blood type and the type of blood that you can safely
receive in transfusions.
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- Blood Typing Four Basic Blood Types A (surface antigen A) B
(surface antigen B) AB (antigens A and B) O (neither A nor B)
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- Blood Types and Cross Reactions Blood Plasma Antibodies Type A
Type B antibodies Type B Type A antibodies Type O Both A and B
antibodies Type AB Neither A nor B antibodies
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- Blood Typing The Rh Factor Also called D antigen Either Rh
positive (Rh + ) or Rh negative (Rh - ) Only sensitized Rh - blood
has anti-Rh antibodies
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- Blood Type Distribution The circle graph shows the percentage
of each blood type found in the U.S. population. What does each
edge of the graph represent? The percentage of each blood type
found in the United States population Rank the four major blood
typesA, B, AB, and O from least common to most common. What is the
percentage of each type? AB (4%),B (11%),A (40%),O (45%) According
to the graph, what percentage of the population is Rh + ? What
percentage is Rh - ? 84%; 16% What type of blood can someone who is
B - (blood type B and Rh-) receive? What percentage of the
population does that represent? O- or B- blood; 9% Use the data to
make a table of the eight possible blood types. Include columns for
the A, B, AB, and O blood types; Rh factor (positive or negative);
and percentage of the population. The data should be arrangedin two
columns and eight rows
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- Graphic Organizer Loop Right side Loop One Loop Two Side of
Heart Where Loop Starts Where Blood Flows to Where Blood Returns to
Left side LungsLeft atrium BodyRight atrium
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- Asking Questions What are some cardiovascular diseases?
Cardiovascular diseases include atherosclerosis and hypertension.
How can a person keep healthy? Exercise regularly, eat a healthy
diet, and avoid smoking. QuestionAnswer Cardiovascular Health -
Cardiovascular Health
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- a condition in which an artery wall thickens as a result of the
accumulation of fatty materials such as cholesterolcholesterol
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- Blood Supply To The Heart 2 coronary arteries branch from the
main aorta just above the aortic valve. No larger than drinking
straws, they carry out about 130 gallons of blood through the heart
muscle daily.
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- Coronary Artery Disease (CAD) Coronary artery disease is one of
the most commonand serious eectsof aging. Fatty deposits build up
in blood vessel walls and narrow the passageway for the movement of
blood. The resulting condition, called atherosclerosis often leads
to eventual blockage of the coronary arteries and heart
attack.
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- Signs and Symptoms None: This is referred to as silent
ischemia. Blood to your heart may be restricted due to CAD, but you
dont feel the effects Chest Pain: If your coronary arteries cant
supply enough blood to meet the oxygen demands of your heart, the
result may be chest pain called angina. Shortness of breath: Some
people may not be aware they have CAD until they develop symptoms
of congestive heart failure- extreme fatigue with exertion,
shortness of breath and swelling in their feet and ankles. Heart
attack: Results when an artery to your heart muscle becomes
completely blocked and the party of your heart muscles fed by that
artery dies.
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- Risk Factors Uncontrollable Sex Heredity Race Age Controllable
High Blood Pressure High Blood Cholesterol Smoking Physical
Activity Obesity Diabetes Stress and anger