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Microanatomy
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Histology of the human body
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MicroAnatomy
LardnerMuir
, 1. Digestive system I- oral cavity , pharynx, oesophagus
TOPIC : 46 -
St
hallow ie stomach , intestines ,
bladder
Organs {
parenchyma ie spleen ,
liver G pancreas
Hallow
organs
Has 3 layers ( tunic ) = Uvula
°
Tunica mucosa
•
Tunica muscular is
Tunica / Advcntica
°
serosa
I Tunica mucosa
→
Primary function Absorbtion chemical
digestion ,
Is the main functional unit
→ Formed by several layers ( laminae ) :
Lamina epithelial is
-
•
Lamina propria
Lamina muscularies
•
Lamina TELAE
•
suburucosa
Lamina epithelial
's
in intestine simple columnar absorptive epithelia
characteristics of epithelia :
→
formed by sicnmillar cells , lacks extra cell cellar matrix
→
Epithelium always lies over basement membrane
→
We dont have any blood vessles ,
get Oz G nutrients from
CT
Underlying tissues such as lamina
propria
CT Lamina propria :
→
function , supportive , nutritional bc it carries blood vessles G
lymphatic vessles , carries her s Ee Glands Inside walls of
organs yr
function is secretion .
oral cavity
→
-8
Digestive track has to extremal
openings { Anus
Airways
→
Urinary system
→
Reproductive system
I
=D
lymphatic nodules
→
Bacteria can enter so we need protection
Lamina muscular is mucosal
consist of l 2-
layers of muscle cells thin layer
function they surface of
charge
→ can mucosa
Lamina TELA sub -
mucosa
similar to lamina propria but is denser CT .
has blood G lymphatic Vessles
nerves , lymphatic hoducls
→
Border BTW muscle G mucosa of hallow
organs
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