test 2 cards 6 Flashcards
digestion begins where?
in the mouth with mechanical movement of teeth
what is chemical digestionin the mouth?
salivary glands
the stomach is a tough muscular what bracketed on both ends by what?
puch, sphincters
food arrival causes stomach cells to release what?
gastrin
the primary digestive enzyme is what?
pepsin
what is secreted to break down lipids?
liapses
glandsin the stomach lining secreete what to protect cells in the stomach walls?
mucus
the stomach stores food, food leaves via what?
the pyloric sphincter
the pyloric sphincter opens and closes to control the release of what?
chyme
what does HCL do in the stomach?
disrupts the tertiary and secondary structure of protiens enhancing degredation by other enzymes.
what is the duodendum?
the place where food enters from the stomach, most remaining digestion occurs here.
jejunum and ilium do what?
carry out most nutrient absorption
final digestion of protiens, carbs, and lipids occur in what structure in humans?
the small intestine
the liver produces what?
bile
what does bile do?
emulsify’s fat
the stomach sits at a PH of what range?
1-3
the pancreas makes and stores what?
digestive enzymes
liapse does what?
breaks down fats
trypsin does what?
breaks down protiesn
amylase breaks down what?
carbs
the primary what occurs in the jejunum and ileum?
absorption of protiens, fats, and carbs
these sections contain what?
vili and microvili
cells in the jejunuma nd ileum are connected by what?
tight junctions
nutrient molecules such as glucose and amino acids are often whawt with the gut content of sodium ions?
co-transplanted
water and minerals are reabsorbed to tissues from what ?
large intestine or colon
T/F the primary funcitons of large intesting si to compact wastes that remain and absorb enough water to form feces
True
