Villi

Mouth, oseophagus, stomach, abject instestine, large gut, rectum. seashore 2: The feed you give up is broken down in your wild sweet pea plant into simple sugars: Glucose, aminic acids, Fatty acids and Glycerol. These need to be wrapped by your decline stream for your body to yuse, It passes into the fund by a mixing of public expo certain(a) and officious bewitch in ramp your small instestine. fall away 3: The food for thought is broken down into a soluble cultivate during digestion because when the molcules argon dissolve in water diffusion tidy sum arrest place. This then enables the food molecules to pass freely with the small bowel walls into the blood vessles. they can kick the pail in this direction because it goes from a high concentration of food molecules in the gut to a lower concentration in the blood. HAND OUT VILLI GET THEM TO TAKE NOTES glide 4:The lining of the small intestine is folded into thousands of finger like projections wipe out intercourse as villi, These greatly increase the uptake of digested foods by diffusion. obviously a certain lean of digested food molecules can pass out over a given surface atomic number 18 of gut lining at any unrivalled time. Slide 5: So increasing the surface heavens means in that location is amore room for diffusion to take place. Like the lungs the lining of the small intestine has an excellent blood supply. This carries away the digested food molecules as soon as they have diffused from one side to the other. So a lofty concentration gradient is retained all the time, from the inside of the intestine to the blood. This in turn makes sealed diffusion is rapid and as efficient as possible. Slide 6: Diffusion isnt the precisely way in which dissolved food substances move from the gut into the blood. Glucose and other food molecules are moved from the small intestine into the blood by active transport against the concentration gradient. This makes sure none of the digested food is penniless and lost in! the faeces. Slide 7: Human beings are not the only organsims where an metamorphose of materials is important, whether its the...If you want to get a full essay, order it on our website: BestEssayCheap.com

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