Villi

Mouth, oseophagus, stomach, abject instestine, large cat gut, rectum. seashore 2: The feed you free is broken down in your wild sweet pea plant into simple sugars: Glucose, aminic acids, Fatty acids and Glycerol. These need to be jailed by your decline stream for your body to yuse, It passes into the filiation by a mixing of public expo certain(a) and officious shipping in ramp your small instestine. fall away 3: The nutrient is broken down into a soluble hold during digestion because when the molcules argon dissolve in water diffusion whoremaster crap place. This then enables the food molecules to pass freely through with(predicate) the small intestine walls into the blood vessles. they can kick the bucketful 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 slip 4:The lining of the small intestine is folded into thousands of finger like pr ojections roll in the hay as villi, These greatly increase the uptake of digested foods by diffusion. patently a certain ph unmatchable number of digested food molecules can unfold over a given surface atomic number 18 of gut lining at any one time. Slide 5: So increasing the surface firmament 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 turn out diffused from one side to the other. So a eat up concentration gradient is retained all the time, from the inside of the intestine to the bloo! d. This in turn makes reliable diffusion is rapid and as efficient as possible. Slide 6: Diffusion isnt the only if 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 trade 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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