2. What is the cardiovascular system?
The heart and circulatory
system (also called the
cardiovascular system)
make up the network
that delivers blood to the
body's tissues. With each
heartbeat, blood is sent
throughout our
bodies, carrying oxygen
and nutrients to all of our
cells
4. Sistematic circulation
Systemic circulation
supplies nourishment
to all of the tissue
located throughout
your body, with the
exception of the heart
and lungs because they
have their own systems
5. It is made up by
The circulatory system is
composed of the heart and
blood vessels, including
arteries, veins, and
capillaries.
6. The Heart
The heart is the key organ
in the circulatory system.
As a hollow, muscular
pump, its main function is
to propel blood throughout
the body. It usually beats
from 60 to 100 times per
minute, but can go much
faster when it needs to. It
beats about 100,000 times
a day, more than 30 million
times per year, and about
2.5 billion times in a 70-
year lifetime.
7. The arteries
arteries. They are the
thickest blood
vessels, with muscular
walls that contract to
keep the blood moving
away from the heart and
through the body. In the
systemic
circulation, oxygen-rich
blood is pumped from
the heart into the aorta.
8. The veins
The veins are not as muscular
as arteries, but they contain
valves that prevent blood from
flowing backward. Veins have
the same three layers that
arteries do, but they are
thinner and less flexible. The
two largest veins are the
superior and inferior vena
cavae. The terms superior and
inferior do not mean that one
vein is better than the
other, but that they are
located above (superior) and
below (inferior) the heart.
9. The capillaries
The capillaries are one of
the most important parts
of the circulatory system
because it is through
them that nutrients and
oxygen are delivered to
the cells. In
addition, waste products
such as carbon dioxide
are also removed by the
capillaries.
10. The blood
The blood is fluid that
circulates in the
principal vascular
system of human
beings and other
vertebrates, in humans
consisting of plasma in
which the red blood
cells, white blood cells,
and platelets are
suspended.
11. Cardiac cycle
Systole represents the time
during which the left and right
Diastole period when
ventricles contract and eject
ventricles are relaxed
blood into the aorta and
pulmonary artery, respectively.
12. circulatory system problems
Congenital heart defects: Congenital heart defects are heart problems that babies have at
birth. A common sign of a congenital heart defect is a heart murmur. A heart murmur is an
abnormal sound (like a blowing or whooshing sound) that's heard when listening to the heart.
Arrhythmia: Cardiac arrhythmias, which are also called dysrhythmias or rhythm disorders, are
problems in the rhythm of the heartbeat.
Cardiomyopathy: is a long-lasting disease that causes the heart muscle (the myocardium) to
become weakened. Usually, the disease first affects the lower chambers of the heart, the
ventricles, and then progresses and damages the muscle cells and even the tissues surrounding
the heart.
Coronary artery disease: Coronary artery disease is the most common heart disorder in
adults, and it's caused by atherosclerosis.
Hypercholesterolemia (high cholesterol): Cholesterol is a waxy substance that is found in the
body's cells, in the blood, and in some of the foods we eat. Having too much cholesterol in the
blood, also known as hypercholesterolemia) or hyperlipidemia is a major risk factor for heart
disease and can lead to a heart attack.
Hypertension (high blood pressure): Hypertension is when a person has blood pressure that's
significantly higher than normal. Over time, it can cause damage to the heart and arteries and
other body organs.
Rheumatic heart disease: Teens who have had strep throat infection may develop rheumatic
fever. This type of infection can cause permanent heart problems
13. Care of the cardiovascular system
of exercise, eating a
nutritious
diet, maintaining a
healthy weight, and
seeing your doctor
regularly for medical
checkups are the best
ways to help keep the
heart healthy and
avoid long-term
problems like high
blood pressure, high
cholesterol, and heart
disease.
