Cardiovascular system
- Created by: lauren2805
- Created on: 30-01-20 16:37
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- Cardiovascular and respiratory system
- Types of blood vessels
- Arteries
- Transport blood away from the heart, carry oxygenated blood to the body and de-oxygenated blood to the lungs, the largest is the aorta, high speed and high pressure
- Veins
- Transport blood back into the heart, carry deoxygenated blood from the bpdy to the heart, low speed and low pressure
- Capillaries
- small blood vessels that carries blood to body cells, 1 cell thick, carbon dioxide and oxygen cross under a process callled diffusion
- Arteries
- Components of blood
- Red blood cells 44%
- contain haemoglobin, transport oxygen
- White blood cella 0.5%
- part of immune system, fights infection
- Platelets 0.5%
- crucial to stop excessive bleeding, prevents infection
- Plasma 55%
- without it blood wouldn't be able to flow around the body
- Red blood cells 44%
- Journey of Blood
- vena-cava
- right atrium
- tri-cuspid valve
- right ventricle
- semi-lunar valve
- pulmonary artery
- lungs
- pulmonary vein
- left atrium
- bi-cuspid valve
- left ventricle
- semi-lunar valve
- Aorta
- body
- Aorta
- semi-lunar valve
- left ventricle
- bi-cuspid valve
- left atrium
- pulmonary vein
- lungs
- pulmonary artery
- semi-lunar valve
- right ventricle
- tri-cuspid valve
- right atrium
- vena-cava
- Heart Rate
- 'the number of times the heart beats per minute'
- maximum heart rate = 220 - your age
- BPM
- Blood pressure
- the amount of force the blood vessels can apply
- Systolic (top number) maximum pressure in the arteries when the heart contracts and pushes blood
- Diastolic (bottom number) the pressure of the blood during the relaxation phase between heart beats
- 100/60 to 120/80
- systolic pressure/ diatolic pressure
- Stroke volume and cardiac output
- SV- the amount of blood pumped out of the heart by each ventricle per beat
- CO- the amount of blood ejected out of the heart in one minute
- Heart rate x stroke volume = cardiac output
- Types of blood vessels
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