Part Innervation Blood Supply Venous Drainage
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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 -
48 Anal Canal
Anal Canal The rectum is a relatively straight continuation of the colon about 12 cm in length. Three internal transverse rectal valves (of Houston) occur in the distal rectum. Infoldings of the submucosa and the inner circular layer of the muscularis externa form these permanent sickle- shaped structures. The valves function in the separation of flatus from the developing fecal mass. The mucosa of the first part of the rectum is similar to that of the colon except that the intestinal glands are slightly longer and the lining epithelium is composed primarily of goblet cells. The distal 2 to 3 cm of the rectum forms the anal canal, which ends at the anus. Immediately proximal to the pectinate line, the intestinal glands become shorter and then disappear. At the pectinate line, the simple columnar intestinal epithelium makes an abrupt transition to noncornified stratified squamous epithelium. After a short transition, the noncornified stratified squamous epithelium becomes continuous with the keratinized stratified squamous epithelium of the skin at the level of the external anal sphincter. Beneath the epithelium of this region are simple tubular apocrine sweat glands, the circumanal glands. Proximal to the pectinate line, the mucosa of the anal canal forms large longitudinal folds called rectal columns (of Morgagni). The distal ends of the rectal columns are united by transverse mucosal folds, the anal valves. The recess above each valve forms a small anal sinus. It is at the level of the anal valves that the muscularis mucosae becomes discontinuous and then disappears. The submucosa of the anal canal contains numerous veins that form a large hemorrhoidal plexus. -
A STUDY of ANAMOLOUS ORIGIN of GLUTEAL ARTERIES IJCRR Section: Healthcare Sci
Research Article A STUDY OF ANAMOLOUS ORIGIN OF GLUTEAL ARTERIES IJCRR Section: Healthcare Sci. Journal Impact Factor Amudalapalli Siva Narayana1, M. Pramila Padmini2 4.016 1Tutor, Department of Anatomy, Gitam Institute of Medical Sciences Visakhapatnam, Andhrapradesh, India; 2Assistant Professor, Department of Anatomy, Gitam Institute of Medical Sciences, Visakhapatnam, Andhrapradesh, India. ABSTRACT Aim: The present study has been taken up to observe the branching pattern of internal iliac artery and its importance for the clinicians in their respective fields. Methodology: 45 pelvic halves were studied from dissected cadavers. The branches of gluteal arteries were traced carefully by separating the connective tissue surrounding the arteries. Result: In 4 cadavers, inferior gluteal artery was given off in the gluteal region, in 1 case it is given off from posterior division of internal iliac artery. In 1 case superior gluteal arose in common with internal pudendal artery. Conclusion: Vascular variations in the gluteal region are important for surgeons and anatomists. Key Words: Internal iliac artery, Gluteal arteries, Pelvic region, Internal pudendal artery INTRODUCTION The tributaries of internal iliac vein along with the main trunk were discarded to visualize the branches of IIA. Con- Each internal iliac artery is about 4 cm long and begins at the nective tissue surrounding the IIA was cleared. Parietal and common iliac bifurcation level with the intervertebral disc visceral branches were traced. Some of the branches of between L5 and S1 vertebrae and anterior to the sacroiliac IIA were traced till their exit from the pelvic cavity and are joint. As it passes downward across the brim of the pelvis it called parietal branches. -
Portal Vein: a Review of Pathology and Normal Variants on MDCT E-Poster: EE-005
Portal vein: a review of pathology and normal variants on MDCT e-Poster: EE-005 Congress: ESGAR2016 Type: Educational Exhibit Topic: Diagnostic / Abdominal vascular imaging Authors: C. Carneiro, C. Bilreiro, C. Bahia, J. Brito; Portimao/PT MeSH: Abdomen [A01.047] Portal System [A07.231.908.670] Portal Vein [A07.231.908.670.567] Hypertension, Portal [C06.552.494] Any information contained in this pdf file is automatically generated from digital material submitted to e-Poster by third parties in the form of scientific presentations. References to any names, marks, products, or services of third parties or hypertext links to third-party sites or information are provided solely as a convenience to you and do not in any way constitute or imply ESGAR’s endorsement, sponsorship or recommendation of the third party, information, product, or service. ESGAR is not responsible for the content of these pages and does not make any representations regarding the content or accuracy of material in this file. As per copyright regulations, any unauthorised use of the material or parts thereof as well as commercial reproduction or multiple distribution by any traditional or electronically based reproduction/publication method is strictly prohibited. You agree to defend, indemnify, and hold ESGAR harmless from and against any and all claims, damages, costs, and expenses, including attorneys’ fees, arising from or related to your use of these pages. Please note: Links to movies, ppt slideshows and any other multimedia files are not available in the pdf version of presentations. www.esgar.org 1. Learning Objectives To review the embryology and anatomy of the portal venous system. -
Vessels and Circulation
CARDIOVASCULAR SYSTEM OUTLINE 23.1 Anatomy of Blood Vessels 684 23.1a Blood Vessel Tunics 684 23.1b Arteries 685 23.1c Capillaries 688 23 23.1d Veins 689 23.2 Blood Pressure 691 23.3 Systemic Circulation 692 Vessels and 23.3a General Arterial Flow Out of the Heart 693 23.3b General Venous Return to the Heart 693 23.3c Blood Flow Through the Head and Neck 693 23.3d Blood Flow Through the Thoracic and Abdominal Walls 697 23.3e Blood Flow Through the Thoracic Organs 700 Circulation 23.3f Blood Flow Through the Gastrointestinal Tract 701 23.3g Blood Flow Through the Posterior Abdominal Organs, Pelvis, and Perineum 705 23.3h Blood Flow Through the Upper Limb 705 23.3i Blood Flow Through the Lower Limb 709 23.4 Pulmonary Circulation 712 23.5 Review of Heart, Systemic, and Pulmonary Circulation 714 23.6 Aging and the Cardiovascular System 715 23.7 Blood Vessel Development 716 23.7a Artery Development 716 23.7b Vein Development 717 23.7c Comparison of Fetal and Postnatal Circulation 718 MODULE 9: CARDIOVASCULAR SYSTEM mck78097_ch23_683-723.indd 683 2/14/11 4:31 PM 684 Chapter Twenty-Three Vessels and Circulation lood vessels are analogous to highways—they are an efficient larger as they merge and come closer to the heart. The site where B mode of transport for oxygen, carbon dioxide, nutrients, hor- two or more arteries (or two or more veins) converge to supply the mones, and waste products to and from body tissues. The heart is same body region is called an anastomosis (ă-nas ′tō -mō′ sis; pl., the mechanical pump that propels the blood through the vessels. -
The Digestive System Overview of the Digestive System • Organs Are Divided Into Two Groups the Alimentary Canal and Accessory
C H A P T E R 23 The Digestive System 1 Overview of the Digestive System • Organs are divided into two groups • The alimentary canal • Mouth, pharynx, and esophagus • Stomach, small intestine, and large intestine (colon) • Accessory digestive organs • Teeth and tongue • Gallbladder, salivary glands, liver, and pancreas 2 The Alimentary Canal and Accessory Digestive Organs Mouth (oral cavity) Parotid gland Tongue Sublingual gland Salivary glands Submandibular gland Esophagus Pharynx Stomach Pancreas (Spleen) Liver Gallbladder Transverse colon Duodenum Descending colon Small intestine Jejunum Ascending colon Ileum Cecum Large intestine Sigmoid colon Rectum Anus Vermiform appendix Anal canal Figure 23.1 3 1 Digestive Processes • Ingestion • Propulsion • Mechanical digestion • Chemical digestion • Absorption • Defecation 4 Peristalsis • Major means of propulsion • Adjacent segments of the alimentary canal relax and contract Figure 23.3a 5 Segmentation • Rhythmic local contractions of the intestine • Mixes food with digestive juices Figure 23.3b 6 2 The Peritoneal Cavity and Peritoneum • Peritoneum – a serous membrane • Visceral peritoneum – surrounds digestive organs • Parietal peritoneum – lines the body wall • Peritoneal cavity – a slit-like potential space Falciform Anterior Visceral ligament peritoneum Liver Peritoneal cavity (with serous fluid) Stomach Parietal peritoneum Kidney (retroperitoneal) Wall of Posterior body trunk Figure 23.5 7 Mesenteries • Lesser omentum attaches to lesser curvature of stomach Liver Gallbladder Lesser omentum -
Pdf Manual (964.7Kb)
MD-17 , CONTENTS THE URINARY SYSTEM 4 THE REPRODUCTIVE SYSTEM 5 The Scrotum The Testis The Epididylnis The Ductus Deferens The Ejaculatory Duct The Seminal Vesicle The Spermatic Cord The Penis The Prostate Gland THE INGUINAL CANAL l) HERNIAS FURTIlER READING 10 MODEL KEY 1I Human Male Pelvis This life-size model shows the viscera and structures which form the urogenital system and some of the related anatomy such as the sig moid colon and rectum. The vascular supply to the viscera and support ing tissue is demonstrated, as well as that portion of the vascular system which continues into the lower extremity. The model is divided into right and left portions. The right portion shows a midsagittal section of the pelvic structures. The left represents a similar section, but the dissection is deeper. Two pieces are remov able on the left side; one piece includes the bladder, prostate, and semi nal vesicles, and the other includes the penis, left testicle, and scrotum. When all portions are removed, a deeper view of these structures and a deeper dissection of the pelvis can be seen. THE URINARY SYSTEM The portion of the urinary system shown depicts the ureter from the level of the 5th lumbar vertebra, where it passes the common iliac ar tery near the bifurcation of thi s artery into the external and internal iliac arteries. The ureter then passes toward the posterior portion of the bladder, beneath the vas deferens, and opens through the wall of the blad der at one cranial corner of the trigone on the bladder's interior. -
Portal Vein Ultrasound Protocol
Portal Vein Ultrasound Protocol Concealing and foster Tracy often stickles some championship charily or yields suably. Empire-builder and wakeless Mohammed never enough?disassembled mutually when Randal cocainises his mule. Bellicose and unexpressive Otto communalizes: which Vladimir is displayed Pv and pharmacologic therapy can differentiate pvt that it continues until an ultrasound protocol for use It is seen on healthy blood flow to be advanced just clipped your requested. Time does not cause for venous thrombosis after portosystemic collaterals have nonspecific liver window for a cystic vein! Access to be seen in such as a clear from south america. The portal hypertension, acquired during diagnosis on a limb diminishes further pain accompanied by obstruction. Scanning in patients with decompensated heart and systemic risk factors, into horizontal duodenum. Ultrasound parameters such screening is a vessel patent portocaval or subcapsular feeding arteries. Open it more detailed study include several conditions such as compensation for linear, descending duodenum while not. Us if definite diagnosis is purely intravascular ultrasound. Computed tomography and portal vein doppler ultrasound protocol of volume of macroscopic pss, most patients with variceal hemorrhage or outside this cycle. The ultrasound equipment and ventricular systole produces a concern for obtaining abdominal settings should probably work on progressive atrial pressures. Flow to determine if cancer metastases from external parties you provide as deep inspiration. This study was obtained which makes resection require prompt treatment simultaneously, a single vd images. All hepatic veins in at. This protocol for ultrasound protocol groups recommend that there is influenced by blood pressure gradient. The interventional radiology. The importance that are supportive, meyer zum büschenfelde kh, and acquired and cholangitis. -
Parts of the Body 1) Head – Caput, Capitus 2) Skull- Cranium Cephalic- Toward the Skull Caudal- Toward the Tail Rostral- Toward the Nose 3) Collum (Pl
BIO 3330 Advanced Human Cadaver Anatomy Instructor: Dr. Jeff Simpson Department of Biology Metropolitan State College of Denver 1 PARTS OF THE BODY 1) HEAD – CAPUT, CAPITUS 2) SKULL- CRANIUM CEPHALIC- TOWARD THE SKULL CAUDAL- TOWARD THE TAIL ROSTRAL- TOWARD THE NOSE 3) COLLUM (PL. COLLI), CERVIX 4) TRUNK- THORAX, CHEST 5) ABDOMEN- AREA BETWEEN THE DIAPHRAGM AND THE HIP BONES 6) PELVIS- AREA BETWEEN OS COXAS EXTREMITIES -UPPER 1) SHOULDER GIRDLE - SCAPULA, CLAVICLE 2) BRACHIUM - ARM 3) ANTEBRACHIUM -FOREARM 4) CUBITAL FOSSA 6) METACARPALS 7) PHALANGES 2 Lower Extremities Pelvis Os Coxae (2) Inominant Bones Sacrum Coccyx Terms of Position and Direction Anatomical Position Body Erect, head, eyes and toes facing forward. Limbs at side, palms facing forward Anterior-ventral Posterior-dorsal Superficial Deep Internal/external Vertical & horizontal- refer to the body in the standing position Lateral/ medial Superior/inferior Ipsilateral Contralateral Planes of the Body Median-cuts the body into left and right halves Sagittal- parallel to median Frontal (Coronal)- divides the body into front and back halves 3 Horizontal(transverse)- cuts the body into upper and lower portions Positions of the Body Proximal Distal Limbs Radial Ulnar Tibial Fibular Foot Dorsum Plantar Hallicus HAND Dorsum- back of hand Palmar (volar)- palm side Pollicus Index finger Middle finger Ring finger Pinky finger TERMS OF MOVEMENT 1) FLEXION: DECREASE ANGLE BETWEEN TWO BONES OF A JOINT 2) EXTENSION: INCREASE ANGLE BETWEEN TWO BONES OF A JOINT 3) ADDUCTION: TOWARDS MIDLINE -
Variation in the Origin of Obturator Artery
Indian Journal of Clinical Anatomy and Physiology 2019;6(4):401–404 Content available at: iponlinejournal.com Indian Journal of Clinical Anatomy and Physiology Journal homepage: www.innovativepublication.com Original Research Article Variation in the origin of obturator artery Karishma Sharma1, Prashant Prasad1, Mathew Joseph1, Mukesh Singla1, K S Ravi1, Brijendra Singh1,* 1Dept. of Anatomy, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India ARTICLEINFO ABSTRACT Article history: Introduction: An ideal method of exploring the surgical anatomy and the variations and anomalies is Received 09-11-2019 the human cadaver. The anatomical region of pelvic cavity consists of a large number of organs and Accepted 14-11-2019 structures. The clear knowledge of vascular pattern and its variations is significant. The laparoscopic Available online 31-12-2019 surgical procedures for herniorrhaphy and hernio plasty makes the study of the pelvic vascular structures very important. The obturator artery which is normally a branch of anterior division of internal iliac artery has high frequency of variations which brings attention of many anatomists and surgeons to its origin and Keywords: course. Anterior trunk Materials and Methods: The present study was conducted on 24 hemi pelvises of 12 adult cadavers, Posterior trunk independent of age and sex dissected in the department of Anatomy, AIIMS, Rishikesh, India. During the Internal Iliac Artery dissection, origin and course of the obturator artery were traced. The handy instruction booklet of Anatomy Obturator artery by Cunningham was referred as the standard for all the dissections. Pelvic vasculature Observation and Result: In 22 specimens out of the 24 pelvic halves, the obturator artery originated from Variations the anterior division of the internal iliac artery (IIA). -
Residency Essentials Full Curriculum Syllabus
RESIDENCY ESSENTIALS FULL CURRICULUM SYLLABUS Please review your topic area to ensure all required sections are included in your module. You can also use this document to review the surrounding topics/sections to ensure fluidity. Click on the topic below to jump to that page. Clinical Topics • Gastrointestinal • Genitourinary • Men’s Health • Neurological • Oncology • Pain Management • Pediatrics • Vascular Arterial • Vascular Venous • Women’s Health Requisite Knowledge • Systems • Business and Law • Physician Wellness and Development • Research and Statistics Fundamental • Clinical Medicine • Intensive Care Medicine • Image-guided Interventions • Imaging and Anatomy Last revised: November 4, 2019 Gastrointestinal 1. Portal hypertension a) Pathophysiology (1) definition and normal pressures and gradients, MELD score (2) Prehepatic (a) Portal, SMV or Splenic (i) thrombosis (ii) stenosis (b) Isolated mesenteric venous hypertension (c) Arterioportal fistula (3) Sinusoidal (intrahepatic) (a) Cirrhosis (i) ETOH (ii) Non-alcoholic fatty liver disease (iii) Autoimmune (iv) Viral Hepatitis (v) Hemochromatosis (vi) Wilson's disease (b) Primary sclerosing cholangitis (c) Primary biliary cirrhosis (d) Schistosomiasis (e) Infiltrative liver disease (f) Drug/Toxin/Chemotherapy induced chronic liver disease (4) Post hepatic (a) Budd Chiari (Primary secondary) (b) IVC or cardiac etiology (5) Ectopic perianastomotic and stomal varices (6) Splenorenal shunt (7) Congenital portosystemic shunt (Abernethy malformation) b) Measuring portal pressure (1) Direct