Circulation Flashcards
Blood
Watery plasma, red blood cells, white blood cells, platelets
Circulation system
Blood, arteries, vein, capillaries, heart
Red blood cells
Contain haemoglobin to carry oxygen
White blood cells
Protect the body and make antibodies
Platelets
Clot blood
Functions of blood
Transport (RBC) and protection (WBC)
Arteries
Have thick walls, narrow Lumen, no valves, carry blood away from heart
Veins
Thin walls, wide lumen, valves, carry blood to heart
Capillaries
Link arteries and veins. Walls are one cell thick, allowed a 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 ventricle
Thick wall because it pumps blood all around the body
Normal body temperature
37 degrees Celsius
Average resting heart rate
70 beats per minute (bpm)
Heart disease is prevented by
Have a good diet, don’t smoke, excersise, avoiding stress