B2 organisation Flashcards
(47 cards)
where is bile produced and what are its functions
made in the liver, alkaline so neutralises HCl in stomach, emulsifies fats to form small droplets which increases the surface area
what do proteases break down and what are the products
protiens –> amino acids
where is amylase produced
salivary glands, pancreas, small intestine (wall of ileum)
where is protease produced
stomach, pancreas, small intestine (wall of ileum)
where is lipase produced
pancreas
what do amalyse enzymes break down and what molecules are produced
starch –> glucose
what do lipase enzymes break down and what molecules are produced
lipids –> fatty acids and glycerol
positive test for sugars
Benedicts solution turns Brick red
positive test for starch
Iodine solution turns food blue-black colour
positive test for protein
Buieret regeant turns purple
what type of system does the heart have
double circulatory system
where does the right ventricle pump blood to
the lungs
where does the left ventricle pump blood to
rest of body (not lungs)
what do pacemaker cells do
control the natural resting heaart rate
where are pacemaker cells located
right atrium
what are three types of blood vessel
artery, vein, capillary
why may a heart valve become faulty
may not:
open as wide as it should
close properly
where do arteries carry blood
away from the heart
what type of blood do arteries carry
oxygenated - except pulmonary artery
what is the pressure in an artery
high pressure
what are the walls of an artery like
thick muscular and elastic walls to pump and accomodate blood
what size is the artery’s lumen
narrow
where do veins carry blood
to the heart
what type of blood do veins carry
deoxygenated - except for pulmonary vein
