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 lumed valves carry blood to the heart
capillaries
link artereis and veins walls are one cell thick allowed for passage for 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 around the body
normal body temperature
37 degress celsius
average resting heart rate
70 bpm
heart disease is prevented by
good diet, dont smoke, exercise, regular exercise and avoiding stress