B3 Flashcards
what happens to deoxygenated blood in the heart
enters through the vena cava and then to the right atrium.
valves between the right ventricle and right atrium prevent backflow
heart contracts and deoxygenated blood goes up the pulmonary artery to the lungs to be oxygenated
what happens to oxygenated blood in the heart
enters the pulmonary vein
then to the left atrium
left ventricle
out of the aorta to the rest of the body
Why does the left side of the heart have thicker walls
pumps blood to the rest of the body
adaptions of arteries
Thick walls,thin lumen so it can withstand a high pressure
adaptions of viens
thin walls
wide lumen
valves
what is coronary heart disease
when the arteries become blocked
how can coronary heart disease be treated
Stents - open up the vessel
statins - reduce build-up of fatty deposits and blood cholesterol levels
What is begnin
does not spread
malignant
does spread through the body
What does protease break down protein into
Amino acids
What does amylase break down starch into
Glucose
What does lipase break down lipids into
Glycerol and fatty acids
what are the similarities between benign tumors and malignant
formed from abnormal cell growth
can form lumps of cell
result in changes of the cell
what are the differences between benign and malignant tumors
malignant tumours have cancerous cells
malignant tumors form secondary cells
benign are similar to normal cells
give me the advantages of stents
remain in place for a long time
effects are immediate
rapid recovery
