SOC16 The Structure Of The Blood Vessels Flashcards
What are the 4 main characteristics of the ARTERIES?
- they take blood away from the heart
- they have thick walls, are more elastic than veins, carry oxygenated blood at a higher pressure than veins
- the channel blood flows through, called the lumen, allows more blood through so it can reach working muscles
- the pulmonery artery carries deoxygenated blood from the heart to the lungs
What are the 4 main characteristics of the veINs?
- veins carry blood INTO the heart
- veins have much thinner walls, less elastic, carries blood at low pressure
- veins contain many valves, helps deoxygentae blood flow
What is the route the blood takes around the heart?
- vena cava
- right atrium
- tricuspid valve
- right ventricle
- semilunar valves
- pulmonary artery
- lungs
- pulmonary vein
- left atrium
- bicuspid valve
- left ventricle
- semilunar valves
- aorta
What are the 4 main characteristics of capillaries?
- capillaries are microscopic vessels - just one cell thick
- at the end, capillaries carry oxygenated blood which transfers oxygen and nutrients to the muscles
- other end, carry deoxygenated blood into the veins, picking up waste to dispose around the body
- capillaries are where gaseous exchange takes place
What is the important of red blood cells?
Red blood cells transports oxygen from the lungs to the body’s cells, and carbon dioxide from the cells to the lungs.
What is the important of the white blood cells?
They produce antibodies to fight against an infection and diseases as a defence sysytem of the body
What is the importance of platelets?
Tiny fragments that swell into irregular shapes to help blood clot and stop bleeding forming as they become stciky and act as a plug.
What is the importance of plasma?
The main role of plasma is to take oxygen, nutrients, hormones, and proteins to the parts of the body that need it.
What is the immune system?
The structures and processes in your body that stop disease.
What is Thrombokinase?
A substance involved in blood clotting.
What is serotonin?
A hormone that triggers the clotting process.
What is plasma?
The fluid part of blood.
What is an Erythrocyte?
Red blood cell
What is Haemoglobin?
A red protein in the blood that transports oxygen
What is Anaemia?
A condition where there is a lack of red blood cells or haemoglobin in the blood.
