b2 - the body Flashcards
what is a tissue
group of cells that perform a similar function
what is an organ
a group of tissues working together to perform a specific function
what is an organ system
group of organs working together to make an organ system
what is an enzyme
a biological catalyst, meaning it speeds up a reaction
how can enzymes become denatured
if the temperature is too high
what is are carbohydrase
group of enzymes that break down enzymes into simple sugars
what are protease
enzymes that help break down proteins into amino acids
what are lipases
enzymes that break down lipids into fatty acids and glycerol
where is amylase produced
salivary glands, pancreas and small intestine
where is protease produced
pancreas, stomach and small intestine
where is lipase produced
pancreas and small intestine
what is bile
made in liber and helps digest fats by emulsifying it, stored in gall bladder and released into small intestine after a meal
how do you calculate the reaction rate
volume of the product divided by time
what does the coronary artery do
supplies the heart with its own source of oxygenated blood and glucose
where does deoxygenated blood enter the heart
through vena cava
what does the right ventricle do
puma the deoxygenated blood to the lungs through the pulmonary artery
where does oxygenated blood enter the heart
pulmonary vein
what does the left ventricle do
pumps the oxygenated blood through the aorta to the rest of the body
what do valves do
stop the blood from flowing backwards
where are the natural pacemakers found and what do they do
the right atrium and controls the resting heart rate
what are bronchi
tubes leading to each lung
where does gas exchange happen
alveoli
how are alveoli adapted
large surface area
what is the order of heart vessels
vena cava, pulmonary artery, aorta, pulmonary vein VPAP
