Multiple Variations of the Branches of Abdominal Aorta
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The Anatomy of the Rectum and Anal Canal
BASIC SCIENCE identify the rectosigmoid junction with confidence at operation. The anatomy of the rectum The rectosigmoid junction usually lies approximately 6 cm below the level of the sacral promontory. Approached from the distal and anal canal end, however, as when performing a rigid or flexible sigmoid- oscopy, the rectosigmoid junction is seen to be 14e18 cm from Vishy Mahadevan the anal verge, and 18 cm is usually taken as the measurement for audit purposes. The rectum in the adult measures 10e14 cm in length. Abstract Diseases of the rectum and anal canal, both benign and malignant, Relationship of the peritoneum to the rectum account for a very large part of colorectal surgical practice in the UK. Unlike the transverse colon and sigmoid colon, the rectum lacks This article emphasizes the surgically-relevant aspects of the anatomy a mesentery (Figure 1). The posterior aspect of the rectum is thus of the rectum and anal canal. entirely free of a peritoneal covering. In this respect the rectum resembles the ascending and descending segments of the colon, Keywords Anal cushions; inferior hypogastric plexus; internal and and all of these segments may be therefore be spoken of as external anal sphincters; lymphatic drainage of rectum and anal canal; retroperitoneal. The precise relationship of the peritoneum to the mesorectum; perineum; rectal blood supply rectum is as follows: the upper third of the rectum is covered by peritoneum on its anterior and lateral surfaces; the middle third of the rectum is covered by peritoneum only on its anterior 1 The rectum is the direct continuation of the sigmoid colon and surface while the lower third of the rectum is below the level of commences in front of the body of the third sacral vertebra. -
Rectum & Anal Canal
Rectum & Anal canal Dr Brijendra Singh Prof & Head Anatomy AIIMS Rishikesh 27/04/2019 EMBRYOLOGICAL basis – Nerve Supply of GUT •Origin: Foregut (endoderm) •Nerve supply: (Autonomic): Sympathetic Greater Splanchnic T5-T9 + Vagus – Coeliac trunk T12 •Origin: Midgut (endoderm) •Nerve supply: (Autonomic): Sympathetic Lesser Splanchnic T10 T11 + Vagus – Sup Mesenteric artery L1 •Origin: Hindgut (endoderm) •Nerve supply: (Autonomic): Sympathetic Least Splanchnic T12 L1 + Hypogastric S2S3S4 – Inferior Mesenteric Artery L3 •Origin :lower 1/3 of anal canal – ectoderm •Nerve Supply: Somatic (inferior rectal Nerves) Rectum •Straight – quadrupeds •Curved anteriorly – puborectalis levator ani •Part of large intestine – continuation of sigmoid colon , but lacks Mesentery , taeniae coli , sacculations & haustrations & appendices epiploicae. •Starts – S3 anorectal junction – ant to tip of coccyx – apex of prostate •12 cms – 5 inches - transverse slit •Ampulla – lower part Development •Mucosa above Houstons 3rd valve endoderm pre allantoic part of hind gut. •Mucosa below Houstons 3rd valve upto anal valves – endoderm from dorsal part of endodermal cloaca. •Musculature of rectum is derived from splanchnic mesoderm surrounding cloaca. •Proctodeum the surface ectoderm – muco- cutaneous junction. •Anal membrane disappears – and rectum communicates outside through anal canal. Location & peritoneal relations of Rectum S3 1 inch infront of coccyx Rectum • Beginning: continuation of sigmoid colon at S3. • Termination: continues as anal canal, • one inch below -
PERIPHERAL VASCULATURE Average Vessel Diameter
PERIPHERAL VASCULATURE Average Vessel Diameter A Trio of Technologies. Peripheral Embolization Solutions A Single Solution. Fathom™ Steerable Guidewires Total Hypotube Tip Proximal/ UPN Length (cm) Length (cm) Length (cm) Distal O.D. Hepatic, Gastro-Intestinal and Splenic Vasculature 24 8-10 mm Common Iliac Artery 39 2-4 mm Internal Pudendal Artery M00150 900 0 140 10 10 cm .016 in 25 6-8 mm External Iliac Artery 40 2-4 mm Middle Rectal M00150 901 0 140 20 20 cm .016 in 26 4-6 mm Internal Iliac Artery 41 2-4 mm Obturator Artery M00150 910 0 180 10 10 cm .016 in 27 5-8 mm Renal Vein 42 2-4 mm Inferior Vesical Artery 28 43 M00150 911 0 180 20 20 cm .016 in 15-25 mm Vena Cava 2-4 mm Superficial Epigastric Artery 29 44 M00150 811 0 200 10 10 cm pre-shaped .014 in 6-8 mm Superior Mesenteric Artery 5-8 mm Femoral Artery 30 3-5 mm Inferior Mesenteric Artery 45 2-4 mm External Pudendal Artery M00150 810 0 200 10 10 cm .014 in 31 1-3 mm Intestinal Arteries M00150 814 0 300 10 10 cm .014 in 32 Male 2-4 mm Superior Rectal Artery A M00150 815 0 300 10 10 cm .014 in 33 1-3 mm Testicular Arteries 1-3 mm Middle Sacral Artery B 1-3 mm Testicular Veins 34 2-4 mm Inferior Epigastric Artery Direxion™ Torqueable Microcatheters 35 2-4 mm Iliolumbar Artery Female 36 2-4 mm Lateral Sacral Artery C 1-3 mm Ovarian Arteries Usable 37 D UPN Tip Shape RO Markers 3-5 mm Superior Gluteal Artery 1-3 mm Ovarian Veins Length (cm) 38 2-4 mm Inferior Gluteal Artery E 2-4 mm Uterine Artery M001195200 105 Straight 1 M001195210 130 Straight 1 M001195220 155 Straight 1 Pelvic -
The Blood Supply of the Lumbar and Sacral Plexuses in the Human Foetus* by M
J. Anat., Lond. (1964), 98, 1, 105-116 105 With 4 plates and 3 text-figures Printed in Great Britain The blood supply of the lumbar and sacral plexuses in the human foetus* BY M. H. DAYt Department of Anatomy, Royal Free Hospital School of Medicine INTRODUCTION The existence of a blood supply to peripheral nerve is well established. Recently, a number of authors have reviewed the literature of the field, among them Blunt (1956) and Abdullah (1958), who from their own observations have confirmed that peripheral nerves are supplied by regional vessels reinforcing longitudinally arranged channels which freely anastomose with each other. There is also evidence that posterior root ganglia are particularly well supplied with blood vessels (Abdullah, 1958), but the precise distribution and arrangement of arteries to some individual nerve trunks and plexuses is still in need of investigation. The literature reveals few references to the blood supply of the lumbar and sacral plexuses. The distribution of arteries to the roots and ganglia of the sacral nerves was noted by Haller (1756), but the most important contributions in this field were those of Bartholdy (1897) and Tonkoff (1898), whose observations on the lumbar and sacral plexuses form part of a general survey of the blood supply of peripheral nerve in man. They cited the lumbar, ilio-lumbar, median and lateral sacral arteries as well as the gluteal and pudendal vessels as sources of supply, but gave no indication of the frequency of these contributions. Subsequent authors including Hovelacque (1927), dealt briefly with the distribution of the lateral sacral, median sacral, gluteal and pudendal arteries to the sacral plexus, but treated more fully the blood supply of the sciatic nerve. -
Bilateral Variant Testicular Arteries with Double Renal Arteries
Cases Journal BioMed Central Case Report Open Access Bilateral variant testicular arteries with double renal arteries Sarita Sylvia1, Sridhar Varma Kakarlapudi1, Venkata Ramana Vollala*2, Bhagath Kumar Potu3, Raghu Jetti2, Srinivasa Rao Bolla4, Mohandas Rao5 and Narendra Pamidi2 Address: 1Department of Anatomy, Mahadevappa Rampure Medical College, Gulbarga, India, 2Melaka Manipal Medical College, Manipal, India, 3Kasturba Medical College, Manipal, India, 4Mamata Medical College, Khammam, India and 5Asian Institute of Medicine, Science and Technology, Sungai Petani, Kedah, Malaysia Email: Sarita Sylvia - [email protected]; Sridhar Varma Kakarlapudi - [email protected]; Venkata Ramana Vollala* - [email protected]; Bhagath Kumar Potu - [email protected]; Raghu Jetti - [email protected]; Srinivasa Rao Bolla - [email protected]; Mohandas Rao - [email protected]; Narendra Pamidi - [email protected] * Corresponding author Published: 2 February 2009 Received: 16 December 2008 Accepted: 2 February 2009 Cases Journal 2009, 2:114 doi:10.1186/1757-1626-2-114 This article is available from: http://www.casesjournal.com/content/2/1/114 © 2009 Sylvia et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: The testicular arteries normally arise from the abdominal aorta. There are reports about the variant origin of these arteries. Accessory renal arteries are also a common finding but their providing origin to testicular arteries is an important observation. The variations described here are unique and provide significant information to surgeons dissecting the abdominal cavity. -
ANATOMICAL STUDY of ABDOMINAL AORTA and ITS BRANCHES for MULTIPLE VARIATIONS Mane Uddhav Wamanrao *1, Kulkarni Yashwant Ramakrishna 2
International Journal of Anatomy and Research, Int J Anat Res 2016, Vol 4(2):2320-27. ISSN 2321-4287 Original Research Article DOI: http://dx.doi.org/10.16965/ijar.2016.205 ANATOMICAL STUDY OF ABDOMINAL AORTA AND ITS BRANCHES FOR MULTIPLE VARIATIONS Mane Uddhav Wamanrao *1, Kulkarni Yashwant Ramakrishna 2. *1 Assistant Professor, Department of Anatomy, Dr. Shankarrao Chavan Government Medical College Nanded, Maharashtra, India. 2 Professor and Head, Department of Anatomy, Government Medical College Chandrapur, Maharashtra, India. ABSTRACT Introduction: Abdominal aorta and its major branches supply oxygenated blood to all the organs in abdominal cavity and lower limbs. Striking variations in the origin and course of the principal branches of abdominal aorta have received the attention of the anatomists and surgeons from long periods. Accurate knowledge of the relationship and course of these arterial conduits and particularly of their variation patterns is of considerable practical importance during laparoscopic and various other surgical procedures. Aim: This study was conducted to find out normal pattern and variations of abdominal aorta and its different branches. Materials and Methods: The variations in the branching pattern of abdominal aorta were studied with meticulous dissection and observation, on total 40 adult cadavers (21 males & 19 females), over the period of two years. Variations of various branches of abdominal aorta were noted. Results: We found absent celiac trunk in 5%, instead of common celiac trunk there were two trunks gastrosplenic and hepatic. Origin of inferior phrenic artery was from celiac trunk in 35% cadavers. Accessory renal arteries were found in 27.5%. Gonadal arteries were originating from renal arteries in 5% cadavers. -
Surgical Anatomy of the Common Iliac Veins During Para-Aortic and Pelvic Lymphadenectomy for Gynecologic Cancer
Original Article J Gynecol Oncol Vol. 25, No. 1:64-69 http://dx.doi.org/10.3802/jgo.2014.25.1.64 pISSN 2005-0380·eISSN 2005-0399 Surgical anatomy of the common iliac veins during para-aortic and pelvic lymphadenectomy for gynecologic cancer Kazuyoshi Kato, Shinichi Tate, Kyoko Nishikimi, Makio Shozu Department of Gynecology, Chiba University School of Medicine, Chiba, Japan See accompanying editorial by Lee on page 1. Objective: Compression of the left common iliac vein between the right common iliac artery and the vertebrae is known to be associated with the occurrence of left iliofemoral deep vein thrombosis (DVT). In this study, we described the variability in vascular anatomy of the common iliac veins and evaluated the relationship between the degree of iliac vein compression and the presence of DVT using the data from surgeries for gynecologic cancer. Methods: The anatomical variations and the degrees of iliac vein compression were determined in 119 patients who underwent systematic para-aortic and pelvic lymphadenectomy during surgery for primary gynecologic cancer. Their medical records were reviewed with respect to patient-, disease-, and surgery-related data. Results: The degrees of common iliac vein compression were classified into three grades: grade A (n=28, 23.5%), with a calculated percentage of 0%-25% compression; grade B (n=47, 39.5%), with a calculated percentage of 26%-50% compression; and grade C (n=44, 37%), with a calculated percentage of more than 50% compression. Seven patients (5.9%) had common iliac veins with anomalous anatomies; three were divided into small caliber vessels, two with a flattened structure, and two had double inferior vena cavae. -
Multiple Variations of Branches of Abdominal Aorta Salve V M , Ratanprabha C
KATHMANDU UNIVERSITY MEDICAL JOURNAL Multiple Variations of Branches of Abdominal Aorta Salve V M , Ratanprabha C Dept.Of Anatomy ABSTRACT: Dr Pinnamaneni Siddhartha Institute Of Medical The Abdominal aorta and its major branches supply oxygenated blood to nearly Sciences & Reasearch Foundation, all the organs in the abdominal cavity. During routine dissection (January 2009) of a middle aged male cadaver at Dr. PSIMS, Gannavaram, Krishna Dist. (INDIA), Chinnaoutpalli, Gannavaram Mandal, the following variations of branches of abdominal aorta were found. The coeliac Krishna District, A.P. India trunk gave off three branches. The first branch was left inferior phrenic artery which arose directly from coeliac trunk. The second branch bifurcates into left gastric artery and accessory hepatic artery for left lobe of liver. The second branch gave off splenic artery and common hepatic artery. The right testicular artery took its origin from right aberrant renal artery. This variation was associated with the presence CORRESPONDING of bilateral aberrant renal arteries for lower poles of both kidneys arising from abdominal aorta and aberrant renal arteries bilateral for upper poles originating Dr Vishal M. Salve from the renal arteries. Anatomical variation of testicular arteries is reported to be 4.7 %. Apart from creating hazards during abdominal surgery, vascular variation can Associate Professor also become a technical problem for infusion therapy and chemoembolisation of neoplasm in the liver. Dept.Of Anatomy KEY WORDS Dr Pinnamaneni Siddhartha Institute Of Medical Sciences & Reasearch Foundation, Abdominal aorta, celiac trunk, aberrant renal arteries, accessory hepatic artery, inferior phrenic artery, splenic artery. Chinnaoutpalli, Gannavaram Mandal, Krishna District, A.P, India E-mail: [email protected] Citation Salve V M, Ratanprabha C. -
Anatomy of the Rectum and Anal Canal, Surgery (2017), J.Mpsur.2016.12.008 BASIC SCIENCE
BASIC SCIENCE been described in the previous article) are noticeably absent on Anatomy of the rectum the rectal wall. Indeed it is this abrupt change in external appearance that enables the surgeon to identify the rectosigmoid and anal canal junction with confidence, at operation. The rectosigmoid junc- tion is approximately 6 cm below the level of the sacral prom- Vishy Mahadevan ontory. Approached from the distal end, however, as when performing a rigid or flexible sigmoidoscopy, the rectosigmoid junction is seen to be 14e18 cm from the anal verge. The rectum Abstract in the adult measures 10e14 cm in length. Collectively the rectum and anal canal constitute the very terminal segment of the large intestine, and thus of the entire gastro- Relationship of the peritoneum to the rectum intestinal tract. Their distal location renders the rectum and anal Unlike the transverse colon and sigmoid colon, the rectum lacks canal readily accessible to direct inspection and examination. The a mesentery. The posterior aspect of the rectum is thus entirely prime function of the rectum is to act as a distensible reservoir for free of a peritoneal covering. In this respect the rectum resembles faeces, while the anal canal incorporates in its wall a powerful the ascending and descending segments of the colon, and all of muscular sphincter which is of paramount importance in the mecha- these segments may be therefore be spoken of as retroperitoneal. nism of faecal continence. Diseases of the rectum and anal canal, The precise relationship of the peritoneum to the rectum is as both benign and malignant, account for a very large part of colorectal follows. -
Axis Scientific Human Circulatory System 1/2 Life Size A-105864
Axis Scientific Human Circulatory System 1/2 Life Size A-105864 05. Superior Vena Cava 13. Ascending Aorta 21. Hepatic Vein 28. Celiac Trunk II. Lung 09. Pulmonary Trunk 19. Common III. Spleen Hepatic Artery 10. Pulmonary 15. Pulmonary Artery 17. Splenic Artery (Semilunar) Valve 20. Portal Vein 03. Left Atrium 18. Splenic Vein 01. Right Atrium 16. Pulmonary Vein 26. Superior 24. Superior 02. Right Ventricle Mesenteric Vein Mesenteric Artery 11. Supraventricular Crest 07. Interatrial Septum 22. Renal Artery 27. Inferior 14. Aortic (Semilunar) Valve Mesenteric Vein 08. Tricuspid (Right 23. Renal Vein 12. Mitral (Left Atrioventricular) Valve VI. Large Intestine Atrioventricular) Valve 29. Testicular / 30. Common Iliac Artery Ovarian Artery 32. Internal Iliac Artery 25. Inferior 31. External Iliac Artery Mesenteric Artery 33. Median Sacral Artery 41. Posterior Auricular Artery 57. Deep Palmar Arch 40. Occipital Artery 43. Superficial Temporal Artery 58. Dorsal Venous Arch 36. External Carotid Artery 42. Maxillary Artery 56. Superficial Palmar Arch 35. Internal Carotid Artery 44. Internal Jugular Vein 39. Facial Artery 45. External Jugular Vein 38. Lingual Artery and Vein 63. Deep Femoral Artery 34. Common Carotid Artery 37. Superior Thyroid Artery 62. Femoral Artery 48. Thyrocervical Trunk 49. Inferior Thyroid Artery 47. Subclavian Artery 69. Great Saphenous Vein 46. Subclavian Vein I. Heart 51. Thoracoacromial II. Lung Artery 64. Popliteal Artery 50. Axillary Artery 03. Left Atrium 01. Right Atrium 04. Left Ventricle 02. Right Ventricle 65. Posterior Tibial Artery 52. Brachial Artery 66. Anterior Tibial Artery 53. Deep Brachial VII. Descending Artery Aorta 70. Small Saphenous Vein IV. Liver 59. -
Transection of Common Iliac Arteries and Veins Bilaterally a Survival After Bilateral Temporary Arterial Shunts and a Unique Postoperative Complication
European Journal of Trauma Case Study Transection of Common Iliac Arteries and Veins Bilaterally A Survival after Bilateral Temporary Arterial Shunts and a Unique Postoperative Complication Eric J. Kuncir, Demetrios Demetriades1 Abstract Case Study This is an unusual case report of a victim of a single J.M., a 23-year-old Hispanic male, sustained a single gunshot wound with transection of all four common gunshot wound to the left flank at about the mid axillary iliac vessels. The patient developed preoperative car- line at the level of the umbilicus. Los Angeles County diac arrest for which he underwent a successful resus- Paramedics responded quickly to the scene, and the citative thoracotomy. The iliac veins were managed by patient was unresponsive and had no obtainable vital ligation and the iliac arteries were stented as part of signs during transport. The patient arrived in the trauma damage control. The patient developed delayed acute room at LAC + USC 7 min later. Primary survey anuria due to ureteric obstruction secondary to bilater- revealed agonal respirations, a faintly palpable carotid al infected false iliac artery aneurysms. Reoperation pulse, and Glasgow Coma Score of 4. There was no visi- with ligation of the arteries and extra-anatomic ble active bleeding from a single wound to the left flank. axillofemoral and femorofemoral bypass was success- The patient was intubated by rapid sequence induction ful. The patient survived with weakness of the lower and was taken directly to the operating room (OR) extremities. without any investigation. He lost pulses during trans- port and a resuscitative left thoracotomy simultaneous Key Words with a midline laparotomy were performed in the OR 15 Iliac vessels · Damage control · False aneurysms min after initial arrival to the hospital. -
The Thoracic Aorta the Abdominal Aorta
The Thoracic Aorta The Thoracic Aorta (portion of descending aorta) descends through the thorax. Visceral branches: > pericardial - posterior pericardium > bronchial - 2 left, 1 right supplying blood to the lungs and bronchial pleurae > esophageal - esophagus > mediastinal - posterior mediastinum Parietal branches: > posterior intercostals - 9-10 pairs - anastomose around the front with anterior intercostals > superior phrenics - posterior diaphragm The Abdominal Aorta The Abdominal Aorta pierces diaphragm and enters abdominal cavity and is now abdominal aorta over the vertebral column. It gives off the following branches: > inferior phrenic - to supply the inferior diaphragm > celiac trunk gives off 3 branches: 1. common hepatic artery - gives off a complex group of arteries to the stomach: • right gastric artery which meets up (anastomoses) with left gastric artery to supply the lesser curvature of the stomach. • right gastroepiploic artery that meets up (anastomoses) with left gastroepiploic artery (branch of splenic artery) to supply the greater curvature of the stomach. 2. splenic artery (to spleen), 3. left gastric artery (to stomach) > superior mesenteric - to supply the midgut (duodenum to mid-transverse colon) > suprarenals - to supply the adrenal gland > renals - to supply the kidneys > gonadals - to supply the testes and ovaries > inferior mesenteric - to supply the hindgut (mid-transverse colon to rectum) > lumbar arteries - several pairs off the posterior side of the descending aorta > median sacral artery - off the posterior