Digestion And
Absorption
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As we have learned, digestion is the simple process of breaking down food molecules into smaller components. This process begins from the mouth and is then carried on to the stomach, to the small intestine, large intestine and then to the anus. This is the physical process of digestion. Here, let us learn more in detail about the chemical process of digestion involved while digesting biomolecules. Digestion is the process of breaking large, insoluble food molecules into smaller molecules for absorption into the bloodstream. This process involves the use of many digestive fluids and enzymes such as saliva, mucus, bile and hydrochloric acid, among others.
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Digestion And
Absorption
1. FOI
carbohydrate
Peioteins Eats Ñi^ tannins
Minerals
small quantities
Food (^) 4) Energy (2) Organic
materials
( growth & (^) repair of
tissues
)
Anterior Aifimmenntnauycanal ( mouth)
- (^) Mouth
I
2. Buccal^ cavity or^ Oral^ Cavity
L N Teeth (^) Muscular tongue posterior ( ANUS)
Musclelarrtonguem Freely
moniable (muscular^
organ
L ✓ attached to^ Upper (^) surface
have
small projections the floor c) a^ Papillae by frenulum^
( taste^ buds)
( some)
Pyloric Pyloric sphincter "
small Intestine
Duvodenum (^) Middle Ileum ( (^) C-Shaped) Jejunum
Highly Leong coiled ) (^) coiled ) t Large
Intestine
Klaus (^) of Alimentary canal rumrunner userosie Muscielaris Siib^ " mucosa Mucosa
ferocity
outermost made of
thin mesothelium with some
connective tissue (epi. of
visceral
organs )
(2) Muscularly smooth muscles Inner "
t s
Oblique
outer circular (
only
in some region)^ longitude '
- (^) nah (3)
Sub Mucosa
loose connective tissues^. v t^ t Nerves (^) Blood Lymph vessels
(4) Mucosa
Innermost
lining the lumen of alimentary canal (^).
Maggoty
- villi Irregular (^) folds
(small intestine)
(stomach)
t
Microvilli
( by cells lining villi
Brush border^ appearance
1^ surface area
Niece Network
of
<
Large lymph^ vessel capillaries (^4) a Lacteal
Mucosal epi
. has^
goblet
cells which
secrete mucus that^ helps in^ lubrication.
Mucosa
forms glands
in (^) stomach
Gastric glands
(^) and crypts in
btw,
bases of villi
(^) Intestine (^) (
Coy pts (^) of LieberKuhn)
duodenum^ glands are
present in (^) sub mucosa. All 4
layers
show modification in diff . parts of alimentary^ canal.
Digestive- (^) urn (^) Glandsurn
Salivary
' hiver
Pancreas glands c) Salivary (^) glands
Three^ pairs of salivary^ glands^ . Patties Submaxillary]^ sib cheek) submandibular linguas ( lower^ jalal)^ (below^ tongue) Situated^ just
outside the^ buccal^
cavity secretes salivary (^) juice into the buccal cavity.
(2) live.rs Largest gland^ ( 1. 1.5kg )
Just^ below^ diaphragm
(abdominal
cavity)
two^ lobes
Hepatic
lobules ( Sto. & funct
. (^) unit ) hate hepatic
covered
by
thin
Celestin the^
connective tissue form (^) of cords) sheath
clatyeisson
's hepatic ducts^ (Bite)^ capsule & Stored in^