Circulatory System of an Animal
A mindmap in BIG detail to show you exactly everything you needed to know about the heart. Is AS level so has lots of detail.
- Created by: Nearly Einstein
- Created on: 08-11-12 19:17
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- Circulatory System of an Animal
- Arteries
- Away from heart
- Thicker than veins
- Branch into arterioles
- Carry oxygenated blood
- Structure
- Lumen
- Endothelium
- Elasticated fibres
- Smooth muscle
- Collagen
- Veins
- Thin walls
- Pulmonary
- Carry deoxygenated blood
- Low pressure
- Towards heart
- Structure
- Lumen
- Elasticated fibres
- Collagen
- Smooth muscle
- Endothelium
- Heart
- Ventricles (BIG)
- Pump blood to the body or lungs
- Atria (SMALL)
- Pump blood to the ventricles
- Septum
- Splits the two ventricles
- Semi-lunar valves
- Stop blood flowing back to the ventricles when pumped
- Ensure blood flows in right direction
- Ventricles to arteries
- Atrioventricular valves
- Stop blood flowing back to the aorta when pumped
- a
- Atria to ventricles
- Aorta
- Oxygenated blood pumped through here to the body
- Coronary Arteries
- Carry oxygenated blood to the heart ITSELF as the heart is a muscle and needs a supply of oxygen for energy
- Blockage is the cause of angina or a heart-attack
- Carry oxygenated blood to the heart ITSELF as the heart is a muscle and needs a supply of oxygen for energy
- Myogenic
- Can beat inside and out of the body
- Ventricles (BIG)
- System of blood flow
- Right Atria
- Right ventricle
- a
- Lungs
- Through Pulmonary Artery
- Deoxygenated
- Left Atria
- Through Pulmonary Vein
- Oxygenated
- Left Ventricle
- Through Atrioventricular Valve
- Body
- a
- Process starts again!
- a
- Through Aorta
- a
- Through Pulmonary Vein
- a
- Through Pulmonary Artery
- a
- Through Atrioventricular valve
- Right ventricle
- Right Atria
- Confusing
- On a diagram the sides of the heart are the opposite way around
- Capillaries
- In between veins and arteries
- Thin
- Large surface area
- Structure
- Lumen
- Endothelium
- Cardiac Cycle
- Ventricular systole
- All four valves are closed
- Ventricles contract pushing blood into arteries
- Semilunar valves open
- Short contraction
- Atrial systole
- Atria contract pushing blood into ventricles
- Atrioventricular valves close
- Diastole (Filling phase)
- Both atria relaxed
- Volume increases and blood flows into heart
- Atrioventricular valves open
- Control
- SAN
- Sinoatrial node
- Generates electrical activity
- Sinoatrial node
- AVN
- Atrioventricular node
- Non conducting tisuue
- Atrioventricular node
- ECG
- Electrocardiogram
- Monitors electrical activity of heart
- Used in hospitals
- Electrocardiogram
- SAN
- Ventricular systole
- Type of system
- Single circulatory systems
- Blood pressure reduced a blood passes through the tiny capillaries of the gills
- Fish used as example
- Heart -> Gills -> Body -> Heart
- Fish used as example
- This means it will mot flow very quickly to the rest of the body
- Limits the rate at which oxygen and nutrients are delivered to respiring tissues
- Blood pressure reduced a blood passes through the tiny capillaries of the gills
- Double circulatory system
- Heart can increase pressure of blood after it has passed the lungs
- Human used as example
- Heart -> Body -> Heart -> Lungs -> Heart
- Human used as example
- Can carry blood at a higher pressure
- Blood pressure is not high enough to damage the capillary network
- Pulmonary
- Systemic
- Heart can increase pressure of blood after it has passed the lungs
- Single circulatory systems
- Arteries
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