Anatomy Of Digestive System

Question 1

Orga of GIT include 2 part

Answer 1

1.GIT tract
2.Accessory organ

Question 2

What are accessory organ?

Answer 2

Teeth ,tongue, salivary gland , liver, gall bladder, and pancrease

Question 3

Function of GIT organ

Answer 3

Ingestion, secretion ,absorption, digestionelimination, movement,

Question 4

Organ of GIT tract include?

Answer 4

1.
Oral cavity
2.
Pharynx
Oesophagus
4.
Stomach
5.
Small Intestine
Large Intestine

Question 5

How many layers of GIT

Answer 5

1. Mucosa
   2.submucosa
   3.muscular layer
   4.serosa

Question 6

Serosa also known as ?

Answer 6

Adventitia

Question 7

Expln general struture of mucosa

Answer 7

-consist of 3 layers -epithelium, lamina propria, and muscularis mucosae
-epithelium lining depends on position either stratified squamous non keratinized or simple columnar
-laminapropria is supporting Ct consist of lymphocyte, plasma cell,lymphatics and rich with blood vessel
-M.mucosae consist of several layers of smooth muscle

Question 8

Expln general structure of submucosa

Answer 8

-irregulat CT
-consist of :blood vessel, lymphatics, nerve plexus and gland(only at duodenum and oesophagus)

Question 9

Structure of muscularis externa

Answer 9

-is the smooth muscle arrange in circular and longitudinal layers.
-inner circular layer arrange in a circular manner around the circumference of the tube.
-tube diametter dexreased when muscle contract
-outer longitudinal layer arrange along the long axis of the tube
-when contract the length decreased

Question 10

Structure of serosa

Answer 10

Part of the gut that is not suspended in peritoneal cavity
-consist of CT with an outer simple sauamous (mesothelium)….mesotheluim also called visceral peritoneum

Question 11

What is Adventitia of git

Answer 11

Part of the gut that is not suspended in the peritoneal cavity
-it merges with adjacent structure and no epthelial lining.

Question 12

What is peritoneal cavity

Answer 12

The potential space between parietal and vicseral peritoneum contain small amt of fluid secreted by mesothelium cell

Question 13

Intraperitoneal

Answer 13

Organ that protrude into the cavity and fully covered by visceral peritoneal

Question 14

Retroperitoneal

Answer 14

Organ located behind the parietal peritoneum

Question 15

Secondary retroperitoneal

Answer 15

Organ that initially inside cavity ,and then get pushed behind parietal peritoneum