Abdomen Week 2 (B) Flashcards
What is the main function of the small intestines?
- Primary absorption site
Small intestines
Origin:
Pylorus
Small intestines
Termination:
ileocecal junction
Small Intestine:
Admission into small intestine controlled by ______.
pylorus
What are the 3 parts of the small intestine?
Duodenum
Jejunum
Ileum
What is the duodenum?
Where does the duodenum begin?
Begins at pylorus and terminates at duodenojejunal junction (level of L2)
What are the 4 parts of the duodenum?
- Superior
- Descending
- Horizontal
- Ascending
What is the superior part of the duodenum? (3)
What is the descending part of the duodenum?
What is the horizontal part of the duodenum?
What is the ascending part of the duodenum?
What is the arterial supply of the duodenum?
Following embryological origin of the gut
Foregut: above major _____
Midgut: below foregut, until ____ ______
duodenal
hind guts
Duodenum:
- Proximal to opening of bile duct (foregut):
Duodenum:
- Distal to opening of bile duct (midgut):
- Veins follow arterial supply but drain either directly or indirectly into _____ vein
portal
Lymphatic drainage duodenum:
- Anterior lymphatic vessels:
- Posterior lymphatic vessels:
Duodenum innervation:
- Vagus + greater & lesser abdominopelvic splanchnic nerves via: (3)
What is the most common ulcer? (2)
- Gastric most common
- Duodenum second most common
- Helicobacter ____ infection
- Chronic _____ predisposes
pylori
anxiety
- Acid secretion —> weaken _____ —> H. pylori erodes into wall
- Eroding into arteries —> life threatening _____
mucosa
bleeds
What does the vagus nerve control?
- Vagus nerves controls acid secretion
Vagotomy =
old treatment of ulcers
Ulcer treatment:
- Prevention mostly today
What is the duodenum?
Duodenum
Extent:
Duodenum
Shape:
C-shaped with convexity to the right side and concavity enclosing the head of the pancreas.
Duodenum
Location:
epigastric and umbilical regions
Duodenum
- Parts: (4)
superior, descending, inferior and ascending
Duodenum
- Common bile duct and ______ ducts open into descending part
- Duodenojejunal flexure is widened by _______ muscle of the duodenum (ligament of Treitz)
pancreatic
suspensory
Duodenum
- Common bile duct and ______ ducts open into descending part
- Duodenojejunal flexure is widened by _______ muscle of the duodenum (ligament of Treitz)
pancreatic
suspensory
Superior (A&B)
* 5cm
* Lies at L1
Anterior:
Posterior:
Medial:
Superior:
Inferior:
Descending (C)
* 8.5cm
* Lies at L1-L3
Anterior:
Posterior:
Medial:
Superior:
Inferior:
Inferior (D)
* 7cm
* Lies at L3
Anterior:
Posterior:
Medial:
Superior:
Inferior:
Ascending (E)
5cm
Runs superomedially (left to right) from L3-L2
Anterior:
Posterior:
Medial:
Superior:
Inferior:
Neurovasculature and lymphatics:
Venous drainage:
Neurovasculature and lymphatics:
Lymphatic drainage:
Neurovasculature and lymphatics:
Innervation:
Arterial supply of the duodenum:
What is the liver? (2)
What does the liver occupy? (3)
Where are the functions of the liver? (3)
Liver surfaces:
▪ Convex diaphragmatic surface: (2)
▪Bare area
▪Subphrenic recesses
Liver surfaces:
▪ Flat to concave visceral surface: (2)
▪Hepatorenal recess ▪Subhepatic space
Inferior border:
What are the features of the diaphragmatic surface of the liver? (4)
What are the features of the visceral surface of the liver? (5)
What do the two saggital fissures & transverse ports hepatic form?
Form H
Visceral surface
- Right fissure:
Visceral surface
- Right fissure:
Visceral surface
- Left fissure: