Inferior mesenteric artery territory
Product code: HP0415
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Whole Whole region / system / unpaired organ.
The inferior mesenteric artery supplies the hindgut-derived region of the gastrointestinal canal (tract), from the splenic flexure of the colon to the rectum. This pattern of arterial perfusion directly informs the regional pattern of lymphatic and venous drainage, sympathetic innervation and visceral pain, and the location of portosystemic anastomoses and arterial watersheds. This Silicone Plastinate reveals the origin, course and branching of the inferior mesenteric artery, including its target viscera and anastomoses with the superior mesenteric and internal iliac arteries. Organs and vessels of the retroperitoneal space can also be explored, alongside the position and structure of the marginal artery and its branches to the colon.
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Polymer injected arteries
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Stand mounted
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Human tissue with unique ID
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Full aftersales support
Key features include
General
- Inferior part of posterior thoracic wall and posterior abdominal wall, posterior part of the pelvis, and the gluteal region.
- Gastrointestinal canal, from ascending colon to anal canal.
Thorax
- Transverse section through the inferior part of the thorax, revealing the vertebral column and associated muscles, and the spinal cord with its meningeal coverings in the vertebral canal.
- Diaphragm (anterior part removed) mostly covered in the diaphragmatic part of the parietal pleura.
- Descending thoracic aorta, oesophagus and inferior vena cava passing through their associated foramen/hiatus (apertures) in the diaphragm.
- Superior view of the lateral and posterior parts of the costodiaphragmatic recesses.
- Position and fibre orientation of the intercostal muscles and muscles of the anterolateral abdominal wall.
- Course and tissue layer location of the intercostal nerves and arteries.
- Various thoracic splanchnic nerves.
Abdomen
- Gastrointestinal canal, from ascending colon to anal canal.
- Most parietal peritoneum and peritoneal formations removed: greater omentum retained and reflected superiorly.
- Liver removed to reveal the retroperitoneal space and its contents.
- Left and right kidneys (partly visible) and their anatomical relations.
- Cardia and cardiac orifice of stomach, including its mucosa and rugae.
- Four parts of the duodenum (to duodenojejunal flexure).
- Position and relations of the pancreas and vessels of the retroperitoneal space.
- Kidneys and ureters, and their relationship with psoas major and quadratus lumborum.
- Renal hilum, with associated arteries and veins.
- Spleen with associated arteries and veins, and its relationship with the left kidney.
- Origin, course, and branching pattern of the inferior mesenteric artery including its anastomosis with the superior mesenteric artery (a vascular watershed point).
- Origin and pattern of arterial supply to the colon, including the marginal artery.
- Superior mesenteric artery and its main branches, including its contribution to the marginal artery.
- Relationship of superior mesenteric artery and vein to the pancreas and duodenum.
- Branching of the coeliac trunk, including its branches to the inferior part of the oesophagus and the anastomotic loops formed by the gastric and gastroepiploic arteries to the curvatures of the stomach.
- Course and bifurcation/formation of the abdominal aorta and inferior vena cava.
- Common iliac vessels and their pattern of branching.
- Internal iliac-derived arterial supply to the rectum and anal canal.
- Sympathetic trunk and sympathetic ganglia.
Pelvis
- Anterior part of pelvis (body and inferior ramus of pubis), perineal and various pelvic viscera and the anterior part of pelvic diaphragm removed to reveal the position and arterial supply to the rectum and anal canal.
- Ischioanal fossae (posterior part) and neurovascular supply to the anal canal.
- Acetabulum with acetabular labrum, ligament of the head of the femur, and surrounding muscles.
- Sacrotuberous and sacrospinous ligaments, sciatic foramina, and parts of the sacral plexus.
- Latissimus dorsi and thoracolumbar fascia (one side) and erector spinae (opposite side).
- Gluteus maximus reflected (one side) and removed (opposite) side to reveal gluteus medius, deep gluteal muscles, and associated arteries and nerves.
Possible variants or pathology (not guaranteed)
- Branching patterns of vessels, nerves, and nerve plexuses.
- Variant origins of arteries (e.g., a coeliaco-mesenteric trunk, an aortic or superior mesenteric of origin of the coeliac trunk branches, and an aberrant or polar renal artery).
- Vertebral level of origin, position and course of vessels and nerves.
- Tortuosity of arteries.
- Arterial aneurysm and atherosclerosis.
- Osteoarthritis and disease-related joint deformity.
- Rheumatological bone and soft tissue changes.
- Distended thoracic or abdominal cavity.
- Morphology and position of viscera and muscles (e.g., large diameter colon).
- Renal segments show differential levels of coloured polymer perfusion (colouration).
- Pathology of the viscera (e.g., renal cyst, diverticula).
- Age-related changes to viscera and soft tissues.
- Enlarged lymph nodes (e.g., intercostal, para-aortic).
Available customisations
- Reveal the three layers of intercostal muscle in one intercostal space.
- Retain the parietal pleura on one side of thorax and diaphragm.
- Reveal the three flat muscle layers of the abdominal wall.
- Retain part of the parietal peritoneum and reveal the paracolic gutters (one side).
- Retain the cecum with vermiform appendix.
- Please contact us to discuss bespoke customisations.
