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The Heart - Coggle Diagram
The Heart
Blood
Red Blood Cells
Carries oxygen and nutrients
45%
White Blood Cells
Protects against infections
Less than 1%
Platelets
Helps in clotting
Less than 1%
Plasma
Regulates bleeding and clotting
55%
Arteries
Carries blood away from the heart
Oxygenated blood
Veins
Carries blood into the heart
Deoxygenated blood
Capillaries
Exchanges nutrients and oxygen between arteries and veins
Organs within the Heart
Vena Cava
Carries deoxygenated blood from the heart to the lungs.
Pulmonary artery
Carries oxygenated blood from the lungs to the heart.
Pulmonary vein
Carries deoxygenated blood from the body back to the heart.
Aorta
Carries oxygenated blood from the heart around the body.
Valves
The heart contains valves that close as the heart pumps blood into the pulmonary artery and aorta.
Alveoli
Good blood supply so that oxygen can go into the blood and carbon dioxide can exit the blood
Spherical shape to have a large surface area in order to perform diffusion.
Ventilation moves air in and out and helps to maintain a steep diffusion gradient.
Very thin alveolus walls give a short distance between the air and the blood to make diffusion easier.
Coronary Heart Disease Treatments
Bypass surgery
Creates a new path for blood to flow around a blocked or partially blocked artery in the heart.
Advantages
Very effective against severe blockages
Disadvantages
Statins
Medication that reduces the cholesterol in the blood and protects the insides of the arteries.
Advantages
No anaesthetic required
Relatively cheap
Effective
Disadvantages
Ineffective against severe blockages or narrowed arteries
Low platelet count
Digestive system problems
Stents
A tiny, expandable metal mesh coil that is put into a newly opened artery to help keep the artery from narrowing or closing again.