Digestion..Absorption etc

[pb100191]

Hey

I need to know what;

Digestion
Absorption
Defecation
Bolus
Alimentary Canal
Enzyme
Digestive system - From mouth to Anus
Assimilation
Peristalsis

means...

lol response with the hour would be appreciated

[theprof]

Homework time again! Sorry for the delay - Hope it's still of use to you:

Digestion. The act or process of converting food into soluble compounds that can be absorbed into the blood and made use of by the body tissues.

Absorption. The passage of substances across and into tissues via osmosis or diffusion, such as the passage of food molecules into intestinal cells.

Defaaecation. The voiding of the contents of the bowel stored in the rectum via the anus.

Bolus. A mass of food ready to be swallowed after chewing. It is also used to describe a ball-shaped mass of food passing through the intestines.

Alimentary Canal. Digestive tract of an animal that begins with the mouth continues through the oesophagus to the stomach and intestines and finishes at the anus.

Enzyme. A protein substance produced by living organisms that acts as a catalyst to speed up metabolic and other biochemical processes involving organic materials.

Digestive System. The alimentary canal along with the organs involved in the process of breaking down ingested food into molecules that are used to nourish the body

Assimilation. The incorporation of nutrients from food into living tissue at the end of digestion.

Peristalsis. This may be defined as waves of contraction that pass along the walls of the hollow muscular structures of the alimentary canal, pushing the contents of the structure forward. Peristalsis occurs in the oesophagus and intestines.

[pb100191]

lol well yes, it was too late, but i need to revise it all for a test tomorrow anyway so thanks! x

[theprof]

My pologies. The wife took me for a spin in the new BMW she "persuaded" me to buy her. Got in later than I had expected.

I'll try better next time.

[pb100191]

I hope you don't think it's your fault! I'm grateful for what you've put! It will come in handy next time :P

Took Test today - I think i got one wrong,

Q What is the other name for a gut?
A. Nothing (I had no idea!)

But anyway, your not my mum so i don't need to be telling you this! Anyway, thanks!

[theprof]

Sorry to hear that.

That was a trick question anyway and I think a bit unfair. Sometimes the gut is defined as the intestines. Other people would tell you it's the alimentary canal, gastrointestinal tract, the tube between mouth and anus etc. They are all correct.

See what you teacher says.

Thanks for letting me know.

[pb100191]

Yeah, teacher said that it was the alimentary canal.

Thanks for your help.