the heart Flashcards
what does the right atrium do?
-receive de-oxygenated blood
what does the right ventricle do?
-pumps blood to lungs
what does the left atrium do?
-receive oxygenated blood from the lungs
what artery is on the right side?
-pulmonary artery
what artery is on the left side?
-aorta
what vein is on the right side?
-vena cava
what vein is on the left side?
-pulmonary vein
which valve is on the right side?
-tricuspid valve
which valve is on the left side?
-bicuspid valve
exercise effect on blood
-more co2 in blood
what happens when you exercise?
-co2 detected by receptors in the aorta
-send signals to brain
-brain sends signals to heart
-causing it to contract more frequently
what happens when an organism is threatened?
-adrenal glands release adrenaline
-binds to receptors
-cardiac muscle contracts more frequently
-inc o2 supply to tissues
risk factors for coronary heart disease…
-diet high in saturated fat
-smoking
-being inactive
why would a diet high in saturated fat cause heart disease?
-leads to fatty deposits forming inside arteries
why would smoking cause heart disease?
-increases blood pressure, damaging inside of coronary artieries
