Stomach

Question 1

How is the abdomen divided?

Answer 1

It is divided into 9 regions
By 2 types of planes
1- right, left vertical planes ( midclaviculer)
2- 2 horizantal planes
transpyloric ( subcostal )
Intertuberculer ( through tubercles of iliac crest )

Regions
Rt hypochondriac. Epigastric. Lt hypochondriac
Rt lumbar . Umblical . Lt lumbar
Rt iliac hypogastric lt iliac

Question 2

Site of stomach ?

Answer 2

It is located in epigastric , lt hypochondriac and umbilical region

Question 3

Decribe ?

Answer 3

• intraperitonel organ
• the most diliated part of gut tube
• j shaped organ
• consists of
2 openings ( cardiac, pyloric )
2 borders ( lesser, greater curvture)
2 surfaces

Question 4

Parts of stomach ?

Answer 4

By 2 imaginary lines
• between cardiac notch ( incisura ) , greater curvature
• between angular notch ( incisura) , greater curvature

Into
Cardiac orifice
Fundus
Body
Pyloris regin with is divided into
• pyloric antrum
• pyloric canal
• pyloric sphincter

Question 5

Talk about cardiac orifice

Answer 5

(5)

• at the site of gastrosephageal sphinctor
• physiological rather than anatomical sphincter ( due you to 6 )
• it prevents GERD
• 1inch to the left of midline
• level of T11

Question 6

Talk about the fundus ?

Answer 6

• in x ray it appears black
• it contains usually gases
• in the left
• at the 5th intercostal space
• separated by apex of heart by diaphragm only

Question 7

Talk about borders of it

Answer 7

1- lesser curvature
- it is suspended from the liver by the lesser omentum.
- rt, lt gastric vessels runs on it

2- greater curvature
- the lower part of it is attached to transverse colon by greater omentum
- gastroepiploic vessesls runs on it

Question 8

Talk about sufaces , their relations

Answer 8

Anterior relation -:
• anterior abdominal wall
• Costal margin
• diaphram
• left lobe of liver

Posterior relations (stomach bed)
( seperated from the stomach by lesser sac except the spleen)

• Left diaphragm,
• Left kidney
•Left adrenal gland,
• pancreas
• transverse colon and mesocolon
• spleen ,spenic vessels

Question 9

Surface anatomy of it

Answer 9

1- cardiac orifice : 2,5 cm to the left from the midline ( at the level of lower border of T 10 )

2- pyloric orifice : 1 inch to the right of the midline ( at the level of transpyloric plane L1)

Question 10

Blood supply of stomach

Answer 10

Arterial supply : celiac trunk

Rt gastric , lt gastric on lesser curvature

Rt , lt gastroepiploic on greater curvature

Short gastric to fundus

Venous :
Parallel to the arteries then drain to portal vein

Question 11

Lymphatic drainage

Answer 11

Rt, lt gastric nodes
Rt, lt gastroepiploic nodes
Short gastric nodes

All to celiac nodes

Question 12

Innervation

Answer 12

Vagus nerve
Ant , post gastric ~> rt , lt gastric after rotation