BIO 202 LAB 4: Arteries of the Abdominal Aorta
Inferior Pancreaticoduodenal a.
#1 First branch of the Superior Mesenteric Artery. Runs superiorly and to the right to supply the duodenum and head of pancreas.
Inferior phrenic a.
#1 First lateral arteries of the abdominal aorta. Supplies the lower half of the diaphragm. Move upward
Cystic a.
#1 Supplies blood to the gallbladder; branch of the L. hepatic a.
Inferior Mesenteric a.
#11 Last branch off of the abdominal aorta (before it forks). Supplies the remained of the large intestine. branches: 1)Left colic a. 2)Sigmoid aa. 3)Superior rectal a.
L. Gastro-omental a.
#11 First major branch after the pancreatic aa forest. Anastamose on the greater curvature of the stomach.
Common iliac a.
#12 Left or Right. The abdominal aorta ends by dividing into the left and right common iliac arteries to supply the pelves and lower limbs. 1)Median sacral a (in between the fork) 2) Internal iliac a.
Pancreatic aa.
#12 Several small branching aa. of the splenic a. That feeds the pancreas.
Transverse colon
Part of the colon that passes across the interior abdomen. Turns posteriorly at the spleen and inferiorly at the splenic flexure to become the descending colon.
Sigmoid colon
Portion of the large intestine going from the descending colon to the rectum. Fourth and last, S-shaped segment of the colon, just before the rectum;
Descending colon
portion of the colon that extends downward from the transverse colon
Ascending colon
portion of the colon that extends upward from the cecum.
Common hepatic a.
#13 3rd branch of the Celiac trunk. Feeds the Liver. ...turns into the Hepeatic a. proper, splits at the end into the Hepatic aa. (liver), Branches: 1) Gastroduodenal a. (R. Gastro-omental, Anterior/Posterior Superior pancreaticoduodenal a. [Inferior pancreaticoduodenal a.]), R. gastric a., Cystic a.
Median sacral a.
#14 Middle artery between the two internal iliac (hypogastric) arteries that leads to the caudal artery of the tail. Terminal branch of the Aorta.
Superior mesenteric a
#15 Second anterior artery of the abdominal aorta. Branches: 1) Inferior Pancreaticoduodenal a. 2) Middle Colic a. 3) R. colic a. 4) Ileocolic a. 5) Jujunal aa. 6) Ileal aa Arises from the Anterior surface of the Abdominal Aorta 1 cm inferior to the Celiac Trunk. Level of the L1 Vertebra. Starts Posterior to the Pancreas, then passes Anterior the Pancreas, third part of the Duodenum, and Left Renal Vein. Upon entering the mesentery of the small intestine, follows path of jejunum and ileum.
Middle Colic a.
#2 2nd Branch of the Superior Mesenteric Artery. Supplies 2/3rds of the Transverse Colon.
L./R. Hepatic aa.
#2 fork after Hapatic a. proper that plug into the liver. 1) branch: Cystic a.
Ileum
#3 Final segment of the small intestine; fine tune oraganic absorption (B12,iron,etc) picks up/absorbs any nutrients not already absorbed.
Left colic a.
#3 First branch of the inferior mesenteric artery that supplies the descending colon
Celiac Trunk
#3 1st anterior branch 3 major a. = 1) Splenic a. 2) Left gastric a. 3) Common hepatic a.
Hepatic a. proper
#3 Continues from the Common hepatic a.
R. colic a.
#4 3rd branch off the Superior Mesenteric artery. Supplies the most of the ascending colon.
Sigmoid aa.
#4 Many branches of the inferior mesenteric a. that go toward the sigmoid colon like a bunch of webs. (branchs off the Left colic a. also)
R. gastric a.
#4 2nd branch off the Hepatic Artery (@ the Hepatic a. proper portion) and feeds the distal lesser curvature of stomach
Superior rectal a.
#5 A direct continuation of the inferior mesenteric artery and supplies the rectum.
Ileocolic a.
#5 branch that runs toward the ileocecal junction; Forks: supplies the ileum, cecum, ascending colon, and vermiform appendix (through the appendicular a., a branch of the ileocolic a.).
Gastroduodenal a.
#5 1rst branch off the Hepatic Artery and serves the stomach, duodenum, greater omentum and pancreas. Splits into: 1) R. gastro-omental a. 2) Anterior/Posterior Superior pancreaticoduodenal a. (Inferior pancreaticoduodenal a)
Ileal aa.
#7 Ateries jetting left off the tail end of the Superior mesenteric a. all along its lower length. Are variable in number. The pass in the two layers of the mesentery to the ileum and progressively divide and join in a series of anastomosing arcades.
Short gastric aa.
#8 Last major branch of the Splenic a. (before it connects to spleen) Supply the fundus of the stomach.
Appendix
#9 A mass of lymphatic tissue at the befenning of the large intestine that helps trap ingested pathogens., A small, fingerlike extension of the vertebrate cecum; contains a mass of white blood cells that contribute to immunity.
L. Gastric a.
#9 Middle branch of the Celiac trunk. Feeds the stomach.
Pancreas
(under stomach) Organs in the abdominal cavity with two roles. The first is an exocrine role: to produce digestive enzymes and bicarbonate, which are delivered to the small intestine via the pancreatic duct. The second is an endocrine role: to secrete insulin and glucagon into the bloodstream to help regulate blood glucose levels.
Jujunum
2nd part of the small intestine about three feet in length, and this is where most of our absorption occurs.
Gallbladder
A digestive accessory organ near the liver. The gallbladder stores and concentrates bile produced by the liver, and is stimulated to release bile when it is needed in the small intestine.
Liver
A large solid organ that lies in the right upper quadrant immediately below the diaphragm; it produces bile, stores glucose for immediate use by the body, and produces many substances that help regulate immune responses. Digestive Helper that helps with bile that is sent to the small intestine to break down lipids into fatty acids. Detoxifies poisons. Converts ammonia from amino acids into uric acid.
Cecum
A pouch connected to the junction of the small and large intestines. Absorb fluids and salts
Rectum
A short tube at the end of the large intestine where waste material is compressed into a solid form before being eliminated
Jejunal aa.
Ateries jetting left off the Superior mesenteric a. all along its length. The jejunal arteries are branches of the superior mesenteric artery which supply the jejunum. Are variable in number. They pass in the two layers of the mesentery to the jejunum and progressively divide and join in a series of anastomosing arcades.
Splenic a.
Branch of Celiac trunk. Branches: 1) Pancreatic aa. 2) L. Gastroomental a. 3) Short gastric aa.
Duodenum
First part of the small intestine.
Spleen
K (behind stomach) An abdominal organ that is considered part of the immune system. THe spleen has four functions: (1) it filters antigen from the blood (2) it is the site of B cell maturation, (3) it stors blood, and (4) it destroys old red blood cells.
Internal iliac a.
Left or Right. The inner branch of the common iliac artery on either side of the body. Delivers blood to bladder and reproductive organs.
Aortic hiatus
Opens through the diaphragm into the abdominal aorta.
Kidney
Renal. Constantly filter the blood to remove waste products and excess water. These are excreted as urine. About 200 quarts of blood are processed every day, producing an average of 2 quarts or urine. Also help the body maintain the proper level of fluid, produce hormones that control blood pressure and make red blood cells, and activate vitamin D to maintain healthy bones.
Abdominal Aorta
Upside down wish bone shape. 1) Celiac trunk 2) Superior mesenteric a. 3) Renal aa. 4) Gonadal aa. 5) Inferior mesenteric a. 6) Common iliac aa.
