The Heart Flashcards
Where does deoxygenated blood enter the heart?
Via the vena cava
Where does the deoxygenated blood go after entering the vena cava?
In the right atrium
What happens to the deoxygenated blood once in the right atrium?
The tricuspid valve opens allowing blood to flow into the right ventricle, to fill it up
After filling up the right ventricle, where does deoxygenated blood now go?
Deoxygenated blood moves from the heart to lungs via the pulmonary artery
After deoxygenated blood has entered to lungs, where does the blood go next?
Blood goes from to the heart from the lungs via the pulmonary vein & blood becomes oxygenated
When the oxygenated blood enters the pulmonary vein where does it go next?
It fills the left atrium
When the blood fills the left atrium, what happens?
The biscuspid valves open and oxygenated blood fills the right ventricle.
Why is the wall of the left ventricle thicker and more muscular?
So it can contact with a greater force, than the right ventricle, move the blood at high pressure out of the aorta
What does the aorta do?
Carry blood all around your body, delivering the oxygen and glucose to your cells for aerobic respiration
What do veins do?
Carry blood to the body at low pressure
What features of veins are there?
Wide lumen & thin layers of muscle walls
Why do veins have valves?
To prevent backflow
What does arteries do?
Carry blood away from the heart to the body
What features do arteries have?
A narrow lumen, thick muscular walls with elastic tissue to withstand high pressure and maintain blood flow
What do capillaries do?
Small vessels that connect arteries and veins with walls that are one cell thick
What do capillaries allow for?
An exchange of substances between the blood and body tissues
What kind of surface area do capillaries have?
A large surface area due to their network structure
