7.4.1 Functions of Alimentary Canal Organs, Diarrhoea

Mouth
> i__ food; m__ digestion via t__
> c__ digestion of s__ via a__

ingesting, mechanical, teeth, chemical, starch, amylase

Salivary Gland
> makes s__ (has amalyse)
> lubricates food: makes small pieces s__ together

saliva, stick

Oesophagus
> transfers food from m__ → s__ via p__

mouth, stomach, peristalsis

Stomach
> makes g__ j__: has p__ for chemical digestion of p__
> __ to kill b__
> Peristalsis c__ food → l__

gastric juice, pepsin, protein, HCl, bacteria, churns, liquid

Duodenum
> __ part of the small intestine
> Receives p__ juice for c__ digestion of protein, f__, s__ && n__ acid from stomach
> Receives b__ to e__ fat (phys. digestion)

1st, pancreatic, chemical, fat, starch, neutralises, bile, emulsify

Ileum
> __ part of small intestine
> E__ in e__ lining = chemical digestion of m__ & peptides
> very l__; has v__ to ↑s_a_ for absorption

2nd, enzymes, epithelial, maltose, long, villi, surface area

Pancreas
> makes digestive enzymes:
>> a__, p__, l__

amylase, protease, lipase

Liver
> makes __
> deamination of excess a__ a__

bile, amino acids

Gall bladder
> stores __

bile

Colon
> __ part of large intestine
> excess w__ absorbed by food
> absorption of b__ s__ → l__

1st, water, bile salts, liver

Rectum
> __ part of large intestine
> stores __

2nd, faeces

Anus
> e__ of __

egestion, faeces

Cholera
> makes toxin causing s__ of c__ ions into __ intestine
>> causes o__: water → g__
> causes d__, de__, loss of s__ from blood
> very contagious & f__ if untreated

secretion, chloride, small, osmosis, gut, diarrhoea, dehydration, salt, fatal