Some sources consider the urethral artery a direct branch of the internal pudendal artery, while others consider it a branch of the perineal artery. The largest veins in the human body are the venae cavae.These are two large veins which enter the right atrium of the heart from above and below. The corpus luteum (plural: corpora lutea) is a temporary endocrine structure involved in ovulation and early pregnancy.. During ovulation, the primary follicle forms the secondary follicle and subsequently the mature vesicular follicle.. At ovulation the follicle ruptures expelling the ovum into the fallopian tube.. The IMA originates from the mid to distal infrarenal aorta around the third lumbar vertebra, which is usually 5 cm below the origin of the SMA. Venous drainage. Course. It is the preferred anatomy classification system as it divides the liver into eight independent functional units (termed segments) rather than relying on the traditional morphological description based on the In human anatomy, the artery of Adamkiewicz (also arteria radicularis magna) is the largest anterior segmental medullary artery. The Z line in the esophagus is the term for a faint zig-zag impression at the gastro-esophageal junction that demarcates the transition between the stratified squamous epithelium in the esophagus and the intestinal epithelium of the gastric cardia (the squamocolumnar junction).. "omental branches": descend to supply the greater omentum and anastomose with branches of the middle colic. Colonic blood supply. It curves forward in the subperitoneal tissue, and then ascends obliquely along the medial margin of the abdominal inguinal ring; continuing its course upward, it pierces the transversalis fascia, and, passing in [1] It arises from the celiac artery [2] and has the following branches: [3] Innervation The celiac artery arises anteriorly from the abdominal aorta just below the diaphragm at the T12 level, behind the median arcuate ligament, just as the aorta enters the abdomen in between the right and left crura. An irregular or elevated Z line Each segmental medullary artery is a branch of the cervical part of the vertebral artery. The marginal artery of Drummond is a branch of the middle colic that forms an anastomosis with a branch from the left colic artery. Straight vessels (vasa recta) arise from the artery to supply the colon. The aortic bifurcation is the point at which the abdominal aorta bifurcates (forks) into the left and right common iliac arteries.The aortic bifurcation is usually seen at the level of L4, just above the junction of the left and right common iliac veins.. It anastomoses with the superior epigastric artery.. Editor/authors are masked to the peer review process and editorial decision-making of their own work and are not able to access this work in the online manuscript submission system. some texts also include supply from the gonadal, middle rectal and uterine arteries 1,2. venous drainage: via similarly named veins but is highly variable 1,2. The Couinaud classification (French eponym: pronounced kwee-NO) is currently the most widely used system to describe functional liver anatomy. The main branches of the left portal vein originate from the umbilical portion, and supply liver segments 2, 3 and 4 5. The superior rectal artery is the continuation of the inferior mesenteric artery.It descends into the pelvis between the layers of the mesentery of the sigmoid colon, crossing the left common iliac artery and vein.. uterine vein draining into internal iliac vein The portal vein ramifies further, forming smaller venous branches and ultimately portal venules. The branches of the SMA are the inferior pancreaticoduodenal artery, the jejunal and ileal braches, the ileocolic artery, the right colic artery, and the middle colic artery. Left artery lies behind the left renal vein, the body of the pancreas and the splenic vein, and is crossed by the inferior mesenteric vein. The term extra renal artery may be used 6, with a The venous blood drains through the correspondent veins into the superior and inferior mesenteric veins. It divides, opposite the third sacral vertebra into two branches, which descend one on either side of the rectum.About 10 or 12 cm from the anus, these Structure Origin. right ovarian vein drains into the inferior vena cava pampiniform plexus drains into the ovarian veins. The internal iliac artery supplies the walls and viscera of the pelvis, the buttock, the reproductive organs, and the medial compartment of the thigh.The vesicular branches of the internal iliac arteries supply the bladder. The ovarian arteries are paired structures that arise from the abdominal aorta, usually at the level of L2.After emerging from the aorta, the artery travels down the suspensory ligament of the ovary, enters the mesovarium, and may anastamose with the uterine artery in the broad ligament. Use in coronary artery surgery [ edit ] The right gastroepiploic artery was first used as a coronary artery bypass graft (CABG) in 1984 The term forearm is used in anatomy to distinguish this area from the arm Arm The arm, or "upper arm" in common usage, is the region of the upper limb that extends from the shoulder to the elbow joint and connects inferiorly to the forearm through the cubital fossa. The retroperitoneum is variably defined, mostly by the lack of consensus definition for the posterior abdominal ureter: aorto-caval and common iliac nodes Sometimes one is derived from the aorta, and the other from one of the renal arteries; they rarely arise as Lymphatic drainage. Arc of Riolan anastomosis between the middle colic branch of SMA and the left colic branch of IMA. The inferior epigastric artery arises from the external iliac artery, immediately above the inguinal ligament. It is C-shaped on axial cross-section with convexity projecting anteriorly in the mid-line. The Z line is a normal finding but is not seen in every study. The common hepatic artery is a short blood vessel that supplies oxygenated blood to the liver, pylorus of the stomach, duodenum, pancreas, and gallbladder. AJOG's Editors have active research programs and, on occasion, publish work in the Journal. The inferior vena cava is retroperitoneal and runs to the right in the impregnated uterus, the arteries carry the blood to the intervillous space of the placenta. The inferior phrenic arteries usually arise between T12 and L2 vertebrae. The superior vena cava carries blood from the arms and head to the right atrium of the heart, while the inferior vena cava carries blood from the legs and abdomen to the heart. One or two small glands are occasionally seen along the trunk of the right colic artery and others are found in relation to the trunk and branches of the middle colic artery. Structure. Structure. Course. arterial supply: from branches of the renal artery, abdominal aorta, superior and inferior vesical arteries. The celiac ganglia and plexus surround the vessel at its origin.. Venous drainage. The right common iliac artery passes in front of the left common iliac vein. It is a short, thick vessel, smaller than the external iliac artery, and about 3 to 4 cm in length.. It is divided into 2 An artery (plural arteries) (from Greek (artr) 'windpipe, artery') is a blood vessel in humans and most other animals that takes blood away from the heart to one or more parts of the body (tissues, lungs, brain etc.). It is formed by the union of several branches; the ileocolic, right colic and middle colic of the SMA and left colic and sigmoid branches of the IMA. The descending and sigmoid colon are supplied by branches of the inferior mesenteric artery (left colic artery and sigmoid arteries). Accessory renal arteries are a common variant of the renal arteries.They are present in ~25% (range 20-30%) of the population and bilateral in ~10% 1.Accurate identification is of utmost importance for surgical planning prior to live donor transplantation 2,3 and renal artery embolization for various reasons 4,5.. The Arc of Riolan (Riolan's arcade, Arch of Riolan, Haller's anastomosis), also known as the meandering mesenteric artery, is another vascular arcade present in the colonic mesentery that connect the proximal middle colic artery with a branch of the left colic artery. Another branch supplies the terminal ileum and caecum called the ileocolic artery. Course. Represents the continuation of the primitive dorsal aorta; quite large in animals with tails but smaller in humans. These small branches penetrate into the vertebral bone through small openings such as the intervertebral foramina.These segmental arteries provide blood flow to the surface and inside the spinal canal at each segmental level. Before reaching the hilus of the kidney, each artery divides into four or five branches. The middle and left colic arteries form the (inconstant) anastomosis of Riolan. The forearm is the region of the upper limb between the elbow and the wrist. Structure. Structure. The middle, right, and ileocecal branches anastomose with each other to form a marginal artery along the inner border of the colon. The deep artery of clitoris is a branch of the internal pudendal artery and supplies the clitoral crura.Another branch of the internal pudendal artery is the dorsal artery of clitoris.. The deep circumflex iliac artery arises from the lateral aspect of the external iliac artery nearly opposite the origin of the inferior epigastric artery.. The number of arterial arcades in the ileum is more than the number of arcades in the jejunum. The primary blood supply to the ovary is the ovarian artery, although there is some anastomosis with branches of the uterine artery 7. ovarian artery. : 431 The ovarian arteries are the corresponding arteries in the female to the It typically arises from a left posterior intercostal artery at the level of the 9th to 12th intercostal artery, which branches from the aorta, and supplies the lower two-thirds of the spinal cord via the anterior spinal artery. Pink - supply from superior mesenteric artery (SMA) and its branches: middle colic, right colic, ileocolic arteries. ovarian branches from the uterine artery. Each portal venule courses alongside a hepatic arteriole and the two vessels form the vascular components of the portal triad. The retroperitoneum is the part of the abdominal cavity that lies between the posterior parietal peritoneum anteriorly and the posterior abdominal wall 4.. Gross anatomy Origin. the terminations of the ovarian and uterine arteries unite and form an anastomotic trunk from which branches are given off to supply the uterus. The celiac artery is typically a short vessel that passes The remnants of the follicle after ovulation is Blue - supply from inferior mesenteric artery (IMA) and its branches: left colic, sigmoid, superior rectal artery. Branches: Celiac artery, superior mesenteric artery, inferior mesenteric artery, common iliac, and 6 others: Artery arising from the middle of the aorta at its lowest part. The SMA gives off two main branches supplying the right colon that are the right colic and middle colic arteries. Branches. Gross anatomy. 7 is for so-called Cannon-Bhm point (the border between the areas of SMA and IMA supplies), which lies at the splenic flexure. 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