Flashcards in 7- animal nuitrition Deck (33)
A diet that contains all the nutrients in correct amounts & proportions to make energy.
-lack of protein
-underweight kids that look fat due to too much carbohydrates
-lack of protein and carbohydrates
- underweight and skinny
taking of substances as food & drink into the body through mouth.
breakdown of food into smaller pieces without chemical changes to food.
breakdown of large insoluble food into small soluble molecules to be absorbed.
movement of small molecules of food & ions through the intestinal wall into blood.
movement of digested food molecules into the cells to be used.
passing out of undigested & unabsorbed food through anus.
loss of watery feces, when not enough water is absorbed from the feces.
treatment of diarrhea
Oral rehydration therapy by giving drink contains water, salts & sugar.
ingestion, mechanical digestion (teeth), chemical digestion (amyalse in saliva)
make saliva to dissolve & chew food. It contains
amylase to digest starch into maltose.
Muscular tube, takes food down to the stomach by peristalsis.
It has piece of cartilage [epiglottis] to stop food from going to lungs.
digest & store food.
-digest & store food.
-contract & relax to mix food with enzymes to make [chyme].
- goblet cells that secrete mucus.
- produce protease enzymes [pepsin] to digest proteins in acidic conditions.
- HCl, to give optimum pH for the enzyme & to kill bacteria in the food by denaturing their enzymes.
parts of small intestines
duodenum and iluem
molecules digested in small intestines
- starch (amylase)
- protein (alkali protease- tripsin)
- fats (lipase)
contains enzymes, flows from pancreas to duodenum, neutralize acidic chime from stomach
no enzymes, made in liver, neutralizes acidic chime for the enzymes, helps emulsification of fat
-yellow pigment from dead RBC
mechanical digestion of fat by breaking up large fats into smaller ones to increase surface area
enzymes in the villi pf the inner walls of the small intestines
-Maltase to break down maltose to glucose.
-Protease to finish breaking down any proteins to amino acids.
-Lipase to finish lipids digestion.
how is the absorption through intestinal walls to blood happen
active transport, diffusion
adaptive features if small intestines
- long, give time to complete digestion & absorption.
- villi, provide large surface area for faster absorption.
- Villi blood capillaries, simple molecules pass into blood & liver.
- Villi contain lacteals, absorb fats.
- Villi are one cell thick, digested food can pass easily to blood capillaries.
colon and rectum
absorbs water & salts from the undigested food before it
passes to the rectum & then out through anus.
They are used to bite off, chop, grind food into small pieces [mechanical digestion].
enamel, dentine, pulp cavity, cement
hard substance, but can dissolve by acids.
hard, but not as hard as enamel. It contains cytoplasm.
contains nerves & blood vessels. They supply the
cytoplasm with food & oxygen.