cardiovascular system Flashcards
cardiovascular system…
circulate blood throughout the body
which are the 3 blood vessels
arteries, veins, capillaries
Arteries
carry the blood AWAY from the heart
OXYGENATED blood
heart –> capillaries
Veins
blood from the capillaries back to the heart
have valves
NON OXYGENATED blood
capillaries
very narrow blood vessels
site of gas and nutrient EXCHANGE
the heart is divided in 4 areas, called
2 upper chambers called atrium
2 lower chambers callen ventricles
septum
the line in the middle of the heart
tract of the blood flow
- right atrium
- right ventricle
- pulmonary artery
- lungs
- pulmonary veins
- left atrium
- left ventricle
- aorta
- arteries
- arterioles
- capillaries (gas and nutrient exchange)
- capillaries to venules
- veins
- vena cava
heart beat rate
60 to 80
what is nodal?
tissue that regulates the heart beat
intrinsic
normal heart beat
extrinsic
being active
systole
heart muscle contract
diastole
heart muscle relax
universal blood doner
O
Universal blood receiver
AB
Leucemia
Lack of white blood cells
what is blood?
carry oxygen and nutrients to capillaries and take C02 and waste away of capillaries
hemoglobin
protein in charge of carrying oxygen
Percentage of plasma in blood
55%
percentage of cells
45%
What are erythrocytes
produce the bone marrow
red because of hemoglobin
What are leukocytes
fight infections
lack of hemoglobin
are white
What are thrombocytes
also known as platelets
coagulation
