Human Anatomy: Abdominal Cavity & Organs
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Questions and Answers

Omentum connects the stomach to other ______.

viscera

The abdominal cavity is bounded above by the ______ diaphragm.

thoraco-abdominal

The largest body cavity is divided into two parts: abdomen proper and ______ cavity.

pelvic

The greater peritoneal cavity extends from the diaphragm into the ______.

<p>pelvis</p> Signup and view all the answers

The lesser peritoneal cavity, also known as the ______ bursa, is a diverticulum of the greater sac.

<p>omental</p> Signup and view all the answers

The 2 sacs of the peritoneal cavity communicate through the ______ foramen of Winslow.

<p>epiploic</p> Signup and view all the answers

The mesentery (proper) connects parts of the intestine to the ______ abdominal wall.

<p>posterior</p> Signup and view all the answers

The abdominal cavity extends below to the pelvic ______.

<p>diaphragm</p> Signup and view all the answers

Primary retroperitoneal organs are covered with peritoneum only on its ______ surface.

<p>anterior</p> Signup and view all the answers

Examples of primary retroperitoneal organs include the kidney and ______.

<p>ureters</p> Signup and view all the answers

Secondary retroperitoneal organs are derived from the ______.

<p>gut</p> Signup and view all the answers

The peritoneal elevation overlying the median umbilical ligament is known as the ______ fold.

<p>median umbilical</p> Signup and view all the answers

The peritoneal folds overlying the inferior epigastric vessels are referred to as ______ umbilical folds.

<p>lateral</p> Signup and view all the answers

Mesentery is a ______ layered peritoneal membrane that supports and attaches hollow viscera.

<p>2</p> Signup and view all the answers

The peritoneal reflections are extensions of the visceral ______.

<p>peritoneum</p> Signup and view all the answers

Examples of secondary retroperitoneal organs include the duodenum and ______.

<p>pancreas</p> Signup and view all the answers

Pancreatic branches of the ______ artery course along the superior border of the pancreas.

<p>splenic</p> Signup and view all the answers

The superior pancreaticoduodenal artery is a branch of the ______ artery.

<p>gastroduodenal</p> Signup and view all the answers

The inferior pancreaticoduodenal artery is a branch of the ______ artery.

<p>superior mesenteric</p> Signup and view all the answers

Venous drainage of the pancreas involves tributaries of the splenic and superior mesenteric veins, which eventually drain into the ______ vein.

<p>portal</p> Signup and view all the answers

The nerve supply to the pancreas is derived from the ______ and superior mesenteric plexus.

<p>celiac</p> Signup and view all the answers

The pancreatic enzymes secretion is controlled largely by hormones from the ______.

<p>duodenum</p> Signup and view all the answers

Pain fibers from the pancreas run in the thoracic ______ nerves.

<p>splanchnic</p> Signup and view all the answers

The posterior border of the spleen is more rounded and blunter than the ______ border.

<p>anterior</p> Signup and view all the answers

Muscle fibers are derived from the right crus of the ______.

<p>diaphragm</p> Signup and view all the answers

The superior pancreaticoduodenal vein drains into the ______.

<p>portal vein</p> Signup and view all the answers

Sympathetic nerve supply comes from the celiac and superior mesenteric ______.

<p>plexuses</p> Signup and view all the answers

Parasympathetic fibers are provided by the ______ nerves.

<p>vagus</p> Signup and view all the answers

Lymphatic drainage occurs through pancreaticoduodenal nodes which drain superiorly to ______ nodes.

<p>hepatic</p> Signup and view all the answers

The ______ lies on the hilum of the right kidney.

<p>head</p> Signup and view all the answers

The main pancreatic duct (Wirsung) terminates into the 2nd part of the duodenum at the summit of the greater duodenal ______.

<p>papilla</p> Signup and view all the answers

The union of the splenic and superior mesenteric veins forms the ______ vein.

<p>portal</p> Signup and view all the answers

The common bile duct and the main pancreatic duct of Wirsung open at the ______.

<p>summit</p> Signup and view all the answers

The accessory pancreatic duct (Santorini) drains into the 2nd part of the duodenum at the minor duodenal ______.

<p>papilla</p> Signup and view all the answers

The minor duodenal papilla is a mucosal elevation located about ______ cm above the major duodenal papilla.

<p>2.5</p> Signup and view all the answers

The neck and uncinated process of the pancreas lie in front of the abdominal ______.

<p>aorta</p> Signup and view all the answers

The head and neck of the pancreas are located inferoposteriorly to the ______.

<p>duodenum</p> Signup and view all the answers

The common bile duct is crossed by the ______ mesenteric artery and vein.

<p>superior</p> Signup and view all the answers

The anterior surface of the pancreas is associated with the ______ mesocolon.

<p>transverse</p> Signup and view all the answers

The tip of the tail of the pancreas contacts the ______ at its hilum.

<p>spleen</p> Signup and view all the answers

The pancreas can be found at the level of the ______ vertebra in the upper abdomen.

<p>L1</p> Signup and view all the answers

The stomach is found ______ to the pancreas.

<p>anteriorly</p> Signup and view all the answers

The anterior surface of the pancreas is crossed by the superior mesenteric vessels and the root of the ______.

<p>mesentery</p> Signup and view all the answers

The third portion of the duodenum runs horizontally along the lower border of the ______.

<p>pancreas</p> Signup and view all the answers

The descending part of the duodenum is approximately ______ cm long.

<p>7-10</p> Signup and view all the answers

The right crus of the diaphragm, IVC, and aorta form the posterior surface of the ______.

<p>pancreas</p> Signup and view all the answers

The bowel begins at the right side of the upper border of the ______ vertebra.

<p>L4</p> Signup and view all the answers

Flashcards

Abdominal Cavity

The large body cavity, extending from the diaphragm to the pelvic diaphragm.

Greater Peritoneal Cavity

The main part of the abdominal cavity, extending from the diaphragm into the pelvis.

Lesser Peritoneal Cavity

A smaller cavity, a diverticulum of the greater cavity, mostly behind the stomach and lesser omentum.

Omentum

Connects stomach to other viscera, has greater and lesser forms.

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Mesenteries

Connect parts of the intestines to the posterior abdominal wall.

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Epiploic Foramen of Winslow

The space connecting the greater and lesser peritoneal cavities.

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Pelvic Cavity

The lower, smaller part of the abdominal cavity.

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Peritoneum

Membrane lining the abdominal cavity.

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Primary Retroperitoneal Organs

Organs that are partially or completely covered by peritoneum only on their anterior surface and not derived from the GI tract.

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Secondary Retroperitoneal Organs

Organs derived from the gut that lose their peritoneal covering during development, covered only on their anterior.

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Median Umbilical Fold

Peritoneal elevation overlying the median umbilical ligament.

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Lateral Umbilical Folds

Peritoneal elevation overlying the inferior epigastric vessels.

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Umbilical Ligaments

Remnants of obliterated umbilical arteries, forming part of the umbilical folds.

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Peritoneal Reflections

Extensions of visceral peritoneum forming structures that support hollow viscus.

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Mesentery

Two-layered peritoneal membrane supporting hollow viscus attachment to body wall/organ.

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Retroperitoneal Organs

Organs located behind the peritoneum, either primary or secondary.

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Pancreatic blood supply

The pancreatic blood supply is provided by pancreatic branches of the splenic artery and pancreaticoduodenal arteries.

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Pancreaticoduodenal arteries

These arteries, supplying the pancreas, include superior and inferior branches.

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Pancreatic venous drainage

Venous blood from the pancreas drains into splenic and superior mesenteric veins, ultimately reaching the portal vein.

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Pancreatic nerve supply

Pancreatic nerve supply comes from the celiac and superior mesenteric plexus, reaching the posterior pancreas.

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Pancreatic enzyme secretion

Pancreatic enzyme release is regulated by hormones (like secretin) from the duodenum.

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Pancreatic pain fibers

Pancreatic pain signals travel via thoracic splanchnic nerves to spinal segments T6-T10.

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Spleen borders

Spleen borders include anterior, posterior, inferior borders, which are described as sharp, notched, rounded.

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Splenic functions

The spleen filters blood, eliminates old cells, filters antigens and particulate matter.

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Portal Vein Landmark

The superior pancreaticoduodenal vein connects to the portal vein, marking the GIT boundary between upper & lower sections.

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Pancreaticoduodenal Vein Drainage

The superior pancreaticoduodenal vein drains into the portal vein, while the inferior joins the superior mesenteric vein.

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Celiac & Superior Mesenteric Plexuses

Sympathetic nerve supply to the digestive tract, originating from these nerve plexuses.

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Vagus Nerve Function (Digestion)

Part of the parasympathetic nervous system, providing nerve fibers to assist with digestion.

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Pancreaticoduodenal Lymph Drainage

Lymphatic drainage from the pancreatic and duodenal areas, beginning superiorly to hepatic nodes, and draining inferiorly to celiac lymph nodes.

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Duodenum parts

The duodenum is divided into four parts: superior, descending, horizontal, and ascending.

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Major duodenal papilla

A small elevation in the duodenum where the common bile duct and main pancreatic duct join.

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Minor duodenal papilla

A smaller elevation in the duodenum near the major papilla, where the accessory pancreatic duct enters.

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Duodenum length

The duodenum is about 8cm in length and starts near the Liver.

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Duodenal Superior Relations

The quadrate lobe of the liver and the gallbladder are superior to the duodenum's superior portion.

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Duodenal Posterior Relations

The gastroduodenal artery, common bile duct, and portal vein are found behind the duodenum.

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Descending Duodenum

The second part of the duodenum, extending from the neck of the gall bladder to the lower border of the pancreas.

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Horizontal Duodenum

The third portion of the duodenum, traversing horizontally across the abdomen.

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Pancreatic Ducts

Both Main(Wirsung) and accessory (Santorini) pancreatic ducts enter the duodenum through the Major and Minor duodenal papilla.

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Duodenum Position

The duodenum is located in the upper-right abdomen. It starts at the curvature of the stomach and extends slightly.

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Major Duodenal Papilla

The opening in the duodenum where the main pancreatic duct and common bile duct empty their contents.

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Minor Duodenal Papilla

The opening in the duodenum for the accessory pancreatic duct.

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Pancreatic Ducts

Ducts carrying pancreatic enzymes.

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Accessory Pancreatic Duct (Santorini)

A smaller pancreatic duct that drains the head of the pancreas.

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Portal Vein

A vein formed by the union of splenic and superior mesenteric veins, crucial for nutrient transport.

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Duodenum Position

The first part of the small intestine, is positioned across the abdominal cavity.

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Pancreas' Location-Posterior

The pancreas is situated behind the stomach, with various parts situated around different organs in the abdominal cavity

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Transverse Mesocolon

Portion of peritoneum that connects the transverse colon to the posterior abdominal wall.

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Study Notes

Abdominal Cavity

  • The abdominal cavity is a large body cavity.
  • It's divided into two parts: the abdomen proper (larger upper part) and the pelvic cavity (smaller lower part).
  • It's bounded above by the thoraco-abdominal diaphragm.
  • The lower boundary is the pelvic diaphragm.

Peritoneum

  • A serous membrane lining the abdominal wall (parietal peritoneum) and enclosing abdominal viscera (visceral peritoneum).
  • It has two layers: parietal and visceral.
  • The space between them is the peritoneal cavity, containing a small amount of fluid.
  • This cavity can be male or female.

Abdominal Portion of the Esophagus

  • 1.5-2.5 cm long distal part of the esophagus.
  • It enters the abdominal cavity through the esophageal opening of the diaphragm (T10).
  • Connects to the stomach at the cardiac orifice.

Stomach

  • A dilated part of the alimentary tract (1.5 liters capacity).
  • Located in the upper quadrant (left hypochondriac, epigastric, and umbilical regions).
  • Has two curvatures (greater and lesser).
  • Divided into fundus, body, and pyloric region.

Duodenum

  • The first part of the small intestine.
  • C-shaped.
  • Divided into four parts: superior, descending, transverse, and ascending.
  • Receives the common bile duct and pancreatic ducts.

Pancreas

  • Flat, pistol-shaped gland.
  • Located behind the stomach.
  • Has head, neck, body, and tail.
  • Produces exocrine and endocrine secretions.

Spleen

  • Largest lymphatic organ.
  • Encapsulated, irregular, wedge-shaped, and vascular.
  • Located in the left upper quadrant of the abdomen.
  • Two major functions (removal of old blood cells and lymphocyte production).

Clinical Correlations

  • Includes conditions like gastric/duodenal ulcers, gastrectomy, gastric cancer, pancreatic hypertrophy, diabetes mellitus, and splenomegaly.

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Related Documents

GHSB Abdomen, Peritoneum, PDF

Description

Explore the intricate structures of the abdominal cavity, including its division into the abdomen proper and pelvic cavity. This quiz covers key components such as the peritoneum, esophagus, and stomach, focusing on their anatomy and functions. Test your knowledge of the human body's digestive system and its accompanying components.

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