Circulation Flashcards
Blood
Watery plasma, red blood cells, white blood cells, platelets
Circulation system
Blood, arteries, veins, capillaries, heart
Red blood cells
Contain haemoglobin to carry oxygen
White blood cells
Protect the body, make antibodies
Platelets
Clot blood
Functions of blood
Transport (RBC carry oxygen) and protection (WBC)
Arteries
Thick walls, narrow lumen
Veins
Thin walls, wide lumens, valves, carry blood to the heart
Capillaries
Link arteries and veins. Walls are one cell think, allows for passage of materials
Cardiac muscle
Muscle in the heart, it never tires
Four chambers of the heart
Right and left atria, right and left ventricles
Left ventricles
Think wall because it pumps blood all around the body
Normal body temperature
37 degrees Celsius
Average resting heart rate
70 bpm
Heart disease is prevented by
Having a good diet, don’t smoke, regular excercise and avoiding stress