Circulation And Cardiovascular System Flashcards
To transport blood,
oxygen and nutrients to
the body
Human Circulatory System
Three main parts of circulatory system
Heart, blood vessels, and blood
It works as a pump to move the
blood around the body.
Heart
four chambers of heart
two atria
(upper chambers) and two
ventricles (lower chambers)
- Chamber of heart that takes in blood
carrying carbon dioxide
Right atrium
- Blood is squeezed down into the _______ and taken to the
lungs, where oxygen replaces
carbon dioxide
right ventricle
- Oxygen-carrying blood
from the lungs enters the ______
left atrium
- Blood is pumped into the _______ and starts
its journey again
throughout the body
left ventricle
It is a special fluid primarily
contained within the blood vessels
Blood
four main components of blood
red
blood cells, white blood cells,
platelets and plasma.
carry oxygen,
nutrients and wastes
Red blood cells
fight diseases and
protect the body
from infection
White blood cells
gather at the site
of injury and help
the clotting process
Platelets
straw-coloured
liquid where the
other components
float in
Plasma
Blood is divided into its
components, with the heaviest
parts at the bottom
plasma
white blood cells
and platelets
red blood cells
These are tubes or channels that
carry blood throughout our body
Blood vessels
three types of blood
vessels
veins, arteries and
capillaries
It has the thickest wall of all three, allowing it to
withstand the high pressure created by the heart.
Artery
It has the thinnest wall to allow substances such as
oxygen and sugars to pass through its wall—into or
out of the blood.
Capillary
It is less muscular and stretchy than an artery, so
blood moves through it with low pressure. It also has a
special valve that helps blood go only one way.
Vein
Carries blood away
from the heart
Artery
Assists in the exchange
of substances between
the blood and tissues
Capillary
Carries blood back
towards the heart
Vein
is an inherited blood
disorder. People with this have red blood cells
that become hard and sticky, forming a C-
shaped blood cell instead of the healthy disc-
shaped one
Sickle cell disease (SCD)
The heart weighs about _____ grams and beats around ______ times a day
250-350 grams
100,000
THE STRUCTURE OF
THE HEART
Fibrous Pericardium
Parietal Pericardium
Serous Fluid
Visceral Pericardium
LAYERS OF THE HEART
Epicardium
Myocardium
Endocardium
THE HEART VENTRICLES
Superior Atria
Inferior Ventricle
Septum
The receiving chambers
Atria
The discharging chamber
Ventricle
is the portion of the
cardiovascular system responsible
for transporting oxygen-depleted
blood
PULMONARY CIRCULATION
They occur as the heart beats,
pumping blood through a system of
blood vessels that carry blood to every
part of the body
SYSTOLE & DIASTOLE
occurs when
the heart contracts to pump blood
out
Systole
occurs when the
heart relaxes after contraction
diastole
Systolic Blood Pressure to peak
pressure , produced by the
contracting ventricles (BP)
120
Diastolic Blood Pressure the
pressure in your arteries when the
ventricles are relaxed (BP)
80
can damaged arterial walls,
mess with your circulation and
ultimately endanger your heart,
lungs, brain, kidneys, and nearly
part of you.
Prolonged high blood pressure
when the heart
stops beating suddenly. The lack of
blood flow to the brain and other
organs can cause a person to lose
consciousness
Cardiac arrest
is an emergency
procedure performed on
people who are in cardiac
arrest or have stopped
breathing.
CPR, or cardiopulmonary
resuscitation
is a medical device used to deliver an electric shock
to the heart to restore normal
rhythm in cases of cardiac
arrhythmias,
defibrillator
chock full of
capillaries, to serve
up a constant supply
of oxygen
Endomysium
Cardiac muscle cell contains a large number of _____ which are tiny structure responsible for producing energy
Mitochondria
Both structurally and functionally separate from one another, meaning some cells can work while other cells can’t
SKELETAL MUSCLE TISSUE
Both physically and electrically connected, all of the time
CARDIAC MUSCLE TISSUE
Keep your heart beating at the correct rhythm
Pacemaker cells
comprised of several specialized
subpopulations of cells that either spontaneously generate electrical activity
The intrinsic conduction system
