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Anatomy Flashcards

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1
Q

Bottom three regions of the classification of the abdomen?

A

Right iliac, hypogastic (middle) and left iliac

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2
Q

Middle three regions of the classification of the abdomen?

A

Right lumbar, Umbilical, and left lumbar

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3
Q

Upper three regions of the classification of the abdomen?

A

Right hypochondrium, epigastric, left hypochondrium

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4
Q

Three main arteries that supply the gut?

A

Celiac trunk

Superior mesenteric artery

Inferior Mesenteric artery

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5
Q

Boundaries of the Foregut. Midgut and hindgut?

A

Foregut to Midgut is halfway along the C of the duodenum

Midgut to Hindgut is 2/3rds along the transverse colon

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6
Q

The lymph and nervous nodes all grouped by what three things?

A

The Celiac, Sup. Mesenteric and inferior mesenteric arteries.

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7
Q

Arterial, venous, and symp + Psymp supply to the foregut?

A

Arterial: Celiac trunk
Venous: Splenic/portal vein
Sympathetic: Via celiac plexus
Parasympathetic: Vagus

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8
Q

What is the foramen that connects the lesser sac to the greater sac?

A

Epiploic foramen

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9
Q

What does the umbilical vein become in adult anatomy?

A

Ligamentum teres

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10
Q

What does the ductus venosus become in adult anatomy?

A

Ligamentum venosum

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11
Q

What is a porto-systemic anastomoses?

A

An area where communication occurs between portal and systemic drainage

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12
Q

Some consequences of portal hypertension?

A

Splenomegaly

Oesophageal varices

Anorfectal varices

Caput medusae

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13
Q

What is caput medusae?

A

Enlarged superficial veins in anterior abdominal wall

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14
Q

How does the proximal limb of the gut tube rotate in embryology?

A

90o to the right

180o upwards

270o in a circle

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15
Q

what does the transverse melocolon connect?

A

The transverse colon to the posterior surface of the abdominal wall

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16
Q

What is an omplalocele?

A

When the gut fails to re-enter in week 10, leaving it outside of the gut

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17
Q

What is a vitelline regression?

A

Vitalline duct failing to regress during development - can cause fistula, or volvulus both bad, volvulus worse

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18
Q

Types of rotation abnormalities?

A

Non-rotation: failure of the gut tube to rotate at all

Volvulus: Distal duodenum pinch closed casing obstruction

Reverse rotation: duodenum anterior to colon (sup. mesenteric constricts duodenum

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19
Q

For the rectum to form at week 12, what elongates?

A

The urorectal septum

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20
Q

What line marks the split between endoderm and ectoderm derived anal canal?

A

Pectinate line

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21
Q

Whats a pneumoperitoneum?

A

Air leaking into the peritoneal cavity, often visualised as bubble under the diaphragm

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22
Q

Pancreatitis can cause bleeding where?

A

Retroperitoneal space or track through the peritoneum

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23
Q

Where is appendicitis pain normally located?

A

Felt in the umbilical region, later localises to the right iliac region

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24
Q

What stimuli are painful to viscera and what are not?

A

Painful:

  • Ischaemia
  • Distension
  • Inflammation

Non-painful:

  • Cutting
  • Burning
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25
Order of structures in the intestines starting from stomach
Stomach - duodenum - jejunum - ileum - cecum - ascending colon - transverse colon - descending colon - sigmoid colon
26
Three main arteries that come off the celiac trunk?
Left gastric Splenic Common hepatic
27

What does the left gastric artery supply?

Lesser curvature of the stomach and 3rd part of the Oesophagus

28
What does the splenic artery supply? What does it then divide into?
Spleen, pancreas Short gastric, left gastro-epiploic
29
What do the short gastric and left gastro-epiploic arteries supply?
Short gastric - fundus of the stomach Left gastro-epiploic - greater curvature of the stomach
30
What does the common hepatic artery go on to form? What do these arteries supply?
Hepatic artery proper - liver (divides into right and left hepatic arteries Right gastric - lesser curvature of the stomach (inferiorly) Gastroduodenal - supplies pylorus and gives off right gastroepiploic which supplies the greater curvature of the stomach inferiorly
31
What three structures run through the lesser omentum?
Bile duct, hepatic artery proper, hepatic portal vein
32
What is the bare area of the liver?
The area of the liver normally covered by the diaphragm - it lacks the peritoneal covering of the other areas of the liver
33
Main veins of the GI system?
Splenic vein, which the superior and inferior mesenteric arteries join onto to, it then joins the hepatic portal vein
34
Arteries that supply the small intestine and cecum?
Superior mesenteric forms the jejunal arteries and ileal arteries The ileocolic artery supplys the end of the ileum and the cecum
35
Main arteries that supply the large intestine that branch of the superior mesenteric artery, what they supply?
Right colic - ascending colon middle colic - transverse colon (2/3rds)
36
Main arteries that supply the colon and rectum that branch from the inferior mesenteric artery?
Left colic - end of transverse and the descending colon Sigmoid arteries - sigmoid colon Superior rectal artery - rectum
37
After the main arteries branch off the superior/inferior mesenteric to supply the colon, they all join one artery that runs along the colon, what is it?
Marginal artery
38
What are the small arteries that branch off the marginal artery to supply the colon called?
Vasa recta
39
Three arteries that supply the rectum, and where athey are located roughly?
Superior rectal - comes in superiorally from above the pelvic floor Middle rectal - runs along the muscles of the pelvic floor Inferior rectal - runs below the pelvic floor in the foramen
40
Main nerve of the pelvic floor?
Inferior rectal nerve - runs in foramen below the pelvic floor
41
Arterial supply of the oesophagus?
Upper third is supplied by the inferior thyroid artery, middle third by branches from thoracic aorta, lower third by left gastric artery
42
Venous drainage of the oesophagus?
Upper third by the inferior thyroid vein, middle by the azygos system and lower third by the left gastric vein
43
Lymphatic drainage of the oesophagus?
Lymph from the upper third drains into deep cervical nodes, the middle into the superior and posterior mediastinal nodes, and the lower third into nodes along the left gastric artery
44
What is inside the peritoneal cavity?
A small amount of peritoneal fluid
45
What is the dorsal and ventral mesogastrium?
The two areas of the peritoneum that attach to the anterior abdominal wall (ventral) and the posterior wall (dorsal)
46
What do the lienorenal and gastrosplenic ligaments attach?
Lienorenal attaches spleen to posterior surface of peritoneum (over the kidneys) Gastrosplenic - attaches stomach to spleen
47
Nerve supply of the oesophagus?
Sympathetic - splanchnic from the sympathetic chain Parasympathetic - Vagus
48
What exactly is the peritoneum?
The serous membrane lines the wall of the abdominopelvic cavity, and invests the organs
49
What structures of the adult gut are retroperitoneal?
Duodenum, ascending/descending colon and rectum.
50
Lymphatic drainage of the stomach?
Left gastric nodes, pyloric nodes, pancreatosplenic nodes, right gastrosplenic nodes - then all onto the celiac nodes
51
Spinal cord values for sympathetics of the stomach?
6th-9th
52
Parasympathetic nerve supply to the stomach?
Vagus nerve, anterior and posterior vagal trunk
53
What is the area that the bile duct and pancreatic duct empty into the duodenum?
The major duodenal papilla
54
Blood supply of the duodenum?
Foregut (before major duodenal papilla) supplied by superior pancreatoduodenal artery and after this the inferior pancreatoduodenal artery
55
The blood supply/lymph and nerve supply of the parietal/visceral peritoneum is the same is which structures?
Blood supply/lymph/nerve supply of visceral peritoneum is the same as the organ below it and the parietalis the same as the abdominal wall above it
56
Difference in mesentery and mesocolon?
Mesentery - small intestine Mesocolon - Transverse/sigmoid colon
57
What are the omenta?
Greater - flaps that lie inbetween the stomach and the posterior abdominal wall Lesser connects the stomach to the liver
58
What do the ascending and descending colon lack?
Mesentery
59
What embryological tissue do the greater and lesser omenta arise from?
Greater from the dorsal mesogastrium Lesser from the ventral mesogastrium
60
What is the epiploic foramen bordered by?
Inferior vena cava, free edge of lesser omentum
61
The divisions of the pancreas?
Head (with uncinate process), neck, body and tail
62
What vessels travel between the head and neck of the pancreas?
Superior mesenteric artery and vein
63
When the bile duct and pancreatic duct join together what is this structure called?
Hepatopancreatic ampulla
64
Lymph drainage of the pancreas?
To the pancreatosplenic nodes
65
The physiological division of the liver?
Between the gallbladder and inferior vena cava
66
What are the structures called that collect bile in the liver?
Bile canaliculi
67
Three divisions of the gallbladder?
Fundus - most anterior Body Neck
68
One way to make the gall-bladder radio-opaque?
Ingestion of iodine
69
Artery that supplies the gall bladder?
Cystic artery
70
Sympathetic and parasympathetic nerve supply of the gallbladder?
Sympathetic - from celiac ganglion Parasympathetic - anterior vagal trunk
71
Functions of the umbilical vein and ductus venosus in the fetus?
Umbilical vein - carries oxygenated blood into the fetus (from the placenta) ends at the hepatic portal vein in porta hepatis Ductus venosus connects porta hepatis to inferior vena cava Together enable blood to bypass the liver in the fetus
72
What are porto-systemic anastomoses?
Parts of the intestine where blood is drained both to the the inferior vena cava and the hepatic portal vein
73
Sites of porto-systemic anastomoses?
Lower end of oesophagus between left gastric and azygous Wall of anal canal Umbilicus
74
Nerve supply to the liver?
Sympathetic - from celiac plexus travelling along the porta hepatis Parasympathetic - from both posterior and anterior vagal trunks
75
What vessels are contained in the lienorenal ligament?
Splenic artery and vein
76
What vessels are enclosed within the gastrosplenic ligament?
Short gastric and left gastroepiploic vessels
77
Changes from jejunum to ileum?
Wall of jejunum is thicker and more vascular There are more folds (plicae circularis Ileum has large numbers of peyers patches
78
Branches off the superior mesenteric?
Inferior pancreatoduodenal artery Jejunal and ileal arteries Middle colic Right colic Ileocolic artery
79
Sympathetic and parasympathetic nerve supply to the small intestine?
Both from the prevertebral plexus Sympathetic from 9th and 10th thoracic spinal cord segments and synapse in celiac/superior mesenteric plexus before travelling through the superior mesenteric plexus Parasympathetic from the vagus nerve, distributed with branches of the superior mesenteric artery
80
What are teniae coli, and appendices epiploicae?
Teniae coli: The three bands of longitudinal muscle in the large intestine Appendices epiploicae: Deposits of fat between colonic wall and visceral peritoneum
81
what is the bend from ascending colon to transverse colon called?
Right colic (hepatic) flexure
82
What is the bend from transverse colon to descending colon called?
Left colic (splenic) flexure
83
Are peyers patches present in the large intestine?
NO
84
What are the cisterna chyli?
The opening of the thoracic duct, just below the diaphragm that lymph from the small and large intestine drains into
85
Nervous supply to the large intestines?
The parasympathetic supply as far at proximal two thirds of transverse colon derived from the vagus nerve through celiac and superior mesenteric plexi, without synapsing. From the distal third of the transverse colon to the rectum the parasympathetics come from pelvic splanchnics Sympathetics come from T11 to L2 - synapse in superior and inferior mesenteric plexi. From cecum to 2/3rds it is superior mesenteric and the rest is inferior mesenteric
86
What are the anal columns?
6-10 longitudinal mucosal folds that contain blood vessels from superior rectal artery/vein, the lower ends are made up of the anal valves.
87
Nerve supply to internal and external sphincters?
Internal - circular smooth muscle autonomic External - striated muscle supplied by inferior rectal (from pudendal)
88
Arterial supply to rectum, what do they branch from?
Superior rectal - inferior mesenteric Middle rectal - internal iliac Inferior rectal - internal pudendal
89
lymph drainage of the rectum?
Upper part to pararectal nodes then onto cisternae chyli from anorectal region - middle rectal vessels to internal iliac nodes below the anal canals to superficial inguinal nodes then onto cisternae chyli
90
Venous drainage of the rectum?
Internal and external venous plexi without valves surround the rectum and anal canal, they then lead to superior, middle and inferior rectal veins
91
Nervous supply of the rectum?
T11 to L2 sympathetic supply synapse in inferior mesenteric ganglion then onto inferior hypogastric plexi Parasympathetic from S2,3 and 4, then onto inferior hypogastric plexi

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