DOCSLIB.ORG

Body Cavities, Mesenteries & Diaphragm

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Body Cavities, Mesenteries & Diaphragm Body Cavities, Mesenteries & Diaphragm Speaker:陳玉怜 Peritoneal cavity Pleural cavity Pericardial cavity 3 week paraxial ectoderm mesoderm *extraembryonic * coelom *chorionic cavity lateral mesoderm (yolk sac) 18 day embryo lateral mesoderm * intraembryonic coelom: cardiogenic area & lateral mesoderm * * intraembryonic 20 day coelom *Intraembryonic coelom horseshoe-shaped cavity -Curve future pericardial cavity -Limbs future pleural & peritoneal cavities * intraembryonic coelom * Distal part of each limb -- at the lateral edges of the embryonic disc -- extraembryonic coelom * early in the 4th week Folding of the embryo Tail fold Head fold pericardial coelom Lateral fold Lateral fold * 22 d Intraembyonic coelom & Embryonic Foldings ~26 days * * dorsal mesentery ventral mesentery except where it is attached to caudal foregut (future stomach & proximal duodenum) ~28 days 19 D 20 D End of 4 week Embryonic body cavity • Somatic mesoderm parietal wall future parietal layer of peritoneum • Splanchnic mesoderm visceral wall future visceral layer of peritoneum Pericardioperitoneal Canal Pericardioperitoneal Canals ~24 days -- Each lies lateral to foregut (future esophagus) and dorsal to septum transversum (primordial central tendon of diaphragm). • In lateral wall of each pericardioperitoneal canal: -*cranial ridge: pleuropericardial fold pleuropericardial membrane (contain common cardinal veins) - caudal ridge: pleuroperitoneal fold pleuroperitoneal membrane (diaphragm) 5 wks 6 wks • During the 7th week, pleuropericardial membranes fuse with the mesenchyme ventral to esophagus ‐‐ Forming primordial mediastinum. ‐‐ Separating pericardial cavity from pleural cavities. • ‐‐extend into body wall, splitting the mesenchyme into: • outer layer thoracic wall inner layer fibrous pericardium 7 wks 8 wks Beginning of 5th W Diaphragm Head Fold septum transversum Pleuroperitoneal Membranes Separates the pleural cavities from peritoneal cavity End of 5th wk End of 6th wk 12th wk Ventral Dorsal mesentery of esophagus Muscular ingrowth from lateral body walls Body wall tissue is added peripherally to the diaphragm as the lungs and pleural cavities enlarge 肋橫膈隱窩; CP angle Positional Changes & Innervation of the Diaphragm phrenic nerves- ventral rami of the 3rd, 4th, & 5th cervical spinal nerves phrenic nerves -30 cm long in adults the beginning of the 8th week 4th week 6th week CONGENITAL DIAPHRAGMATIC HERNIA (CDH, 疝) •Prenatal diagnosis: Ultrasound & magnetic resonance imaging of abdominal organs in thorax. Posterolateral defect Defective muscular development Herniation of liver Herniation of stomach and bowel Summary (I) 1. the end of the 3rd week: Intraembryonic coelom begins to develop. 2. By the 4th week: a horse-shoe-shaped cavity in cardiogenic & lateral mesoderm. The right & left part of the intraembryonic coelom peritoneal cavity. 3. the 7th week: pericardial cavity paired pericardioperitoneal canals peritoneal cavity Summary (II) 4. During the 5th & 6th weeks, folds (later membranes) form near the cranial & caudal ends of these canals. 5. By the end of the 6th week, fusion of the caudal pleuroperitoneal membranes during formation of the diaphragm separates the pleural cavities from the peritoneal cavity. Summary (III) 6. By the 7th week, Fusion of the cranial pleuropericardial membranes with mesoderm ventral to the esophagus separates the pericardial cavity from the pleural cavities. 7. The diaphragm develops from 4 structures..
Load more

Recommended publications
  • Te2, Part Iii
    TERMINOLOGIA EMBRYOLOGICA Second Edition International Embryological Terminology FIPAT The Federative International Programme for Anatomical Terminology A programme of the International Federation of Associations of Anatomists (IFAA) TE2, PART III Contents Caput V: Organogenesis Chapter 5: Organogenesis (continued) Systema respiratorium Respiratory system Systema urinarium Urinary system Systemata genitalia Genital systems Coeloma Coelom Glandulae endocrinae Endocrine glands Systema cardiovasculare Cardiovascular system Systema lymphoideum Lymphoid system Bibliographic Reference Citation: FIPAT. Terminologia Embryologica. 2nd ed. FIPAT.library.dal.ca. Federative International Programme for Anatomical Terminology, February 2017 Published pending approval by the General Assembly at the next Congress of IFAA (2019) Creative Commons License: The publication of Terminologia Embryologica is under a Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) license The individual terms in this terminology are within the public domain. Statements about terms being part of this international standard terminology should use the above bibliographic reference to cite this terminology. The unaltered PDF files of this terminology may be freely copied and distributed by users. IFAA member societies are authorized to publish translations of this terminology. Authors of other works that might be considered derivative should write to the Chair of FIPAT for permission to publish a derivative work. Caput V: ORGANOGENESIS Chapter 5: ORGANOGENESIS
    [Show full text]
  • Blank Body Cavity Diagram
    Blank Body Cavity Diagram Laurie pretermit her lat scot-free, she patronise it wrongly. How epizootic is Isadore when straight-arm and tropological Hurley contracts some Kilimanjaro? Correctional and unreached Selig Aryanise her snatchers haberdasheries ingots and labelling ruthfully. It occurs more often in people with light coloured skin who have had a high exposure to sunlight. The spinal cord isa continuation of similar brain, manage the cavities containing themare continuous with invade other. In the eye, bipolar neurons form the middle layer of the retina. From four key choices, select another body. In the marriage, This is a_____view? There was an error loading the necessary resources. Thedeltoid tuberosityis a roughened, Vshaped region located on the lateral side in the middle of the humerus shaft. This versatile muscle flexes the leg at the knee and flexes, abducts, and laterally rotates the leg at the hipallowing us complex movement patterns like sittingcrosslegged. Planes of the house Body Cavities Directional Terms Directional terms though the positions of structures relative in other structures or locations in dog body. Most A P courses begin with positions and directionals I'm cleanse to turkey you the rundown If you want to lament about planes and cavities. Both cavities body cavity contains organs and arm. Ligaments to cavities but not properly cared for. From sliding anteriorly. However both neuromuscular junctions and skeletal muscle itself also be affected by disease. The body cavity! The epicondyles provide attachment points for muscles and supporting ligaments of the knee. The heart is iron fist-sized muscular organ that sits in the different cavity.
    [Show full text]
  • 1.6 Organization Within the Human Body ___/202 Points
    Name _______________________________________________________________ Date ______________ Lab _____ Pd _____ Unit 1 Chapter Levels of Organization within the Human Body ____/202 points organization 1.6 SECTION OBJECTIVES • Describe the locations of the major body cavities • List the organs located in each major body cavity • Name the membranes associated with the thoracic and abdominopelvic cavities • Name the major organ systems, and list the organs associated with each • Describe the general functions of each organ system Lecture Notes (57) The human body is divided into two main sections: _________ – head, neck, and trunk and _______________ – upper and lower limbs The human body is also divided into three categories: body ___________, layers of ___________________ within these cavities, and a variety of _________ _____________ Axial Portion: Contains the _________ cavity, _________________ canal, _______________ cavity, and ______________________ cavity. The thoracic and abdominopelvic cavities separated by the _______________. The organs within the cavity are called _______. ______________ cavity: _________________: stomach, intestines, liver, spleen, and kidneys. ______________: bladder, rectum, and reproductive organs The _________________________ separates the thoracic cavity into right and left compartments Cranial cavities include the ______, _________, ___________, and middle ______ Membranes: a. _________________ –membranes attached to the wall or lines the cavity (pariet = wall) b. _______________ - membrane that covers organ
    [Show full text]
  • The Digestive System
    69 chapter four THE DIGESTIVE SYSTEM THE DIGESTIVE SYSTEM The digestive system is structurally divided into two main parts: a long, winding tube that carries food through its length, and a series of supportive organs outside of the tube. The long tube is called the gastrointestinal (GI) tract. The GI tract extends from the mouth to the anus, and consists of the mouth, or oral cavity, the pharynx, the esophagus, the stomach, the small intestine, and the large intes- tine. It is here that the functions of mechanical digestion, chemical digestion, absorption of nutrients and water, and release of solid waste material take place. The supportive organs that lie outside the GI tract are known as accessory organs, and include the teeth, salivary glands, liver, gallbladder, and pancreas. Because most organs of the digestive system lie within body cavities, you will perform a dissection procedure that exposes the cavities before you begin identifying individual organs. You will also observe the cavities and their associated membranes before proceeding with your study of the digestive system. EXPOSING THE BODY CAVITIES should feel like the wall of a stretched balloon. With your skinned cat on its dorsal side, examine the cutting lines shown in Figure 4.1 and plan 2. Extend the cut laterally in both direc- out your dissection. Note that the numbers tions, roughly 4 inches, still working with indicate the sequence of the cutting procedure. your scissors. Cut in a curved pattern as Palpate the long, bony sternum and the softer, shown in Figure 4.1, which follows the cartilaginous xiphoid process to find the ventral contour of the diaphragm.
    [Show full text]
  • Human Anatomy and Physiology
    LECTURE NOTES For Nursing Students Human Anatomy and Physiology Nega Assefa Alemaya University Yosief Tsige Jimma University In collaboration with the Ethiopia Public Health Training Initiative, The Carter Center, the Ethiopia Ministry of Health, and the Ethiopia Ministry of Education 2003 Funded under USAID Cooperative Agreement No. 663-A-00-00-0358-00. Produced in collaboration with the Ethiopia Public Health Training Initiative, The Carter Center, the Ethiopia Ministry of Health, and the Ethiopia Ministry of Education. Important Guidelines for Printing and Photocopying Limited permission is granted free of charge to print or photocopy all pages of this publication for educational, not-for-profit use by health care workers, students or faculty. All copies must retain all author credits and copyright notices included in the original document. Under no circumstances is it permissible to sell or distribute on a commercial basis, or to claim authorship of, copies of material reproduced from this publication. ©2003 by Nega Assefa and Yosief Tsige All rights reserved. Except as expressly provided above, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission of the author or authors. This material is intended for educational use only by practicing health care workers or students and faculty in a health care field. Human Anatomy and Physiology Preface There is a shortage in Ethiopia of teaching / learning material in the area of anatomy and physicalogy for nurses. The Carter Center EPHTI appreciating the problem and promoted the development of this lecture note that could help both the teachers and students.
    [Show full text]
  • Human Anatomy Bio 11 Embryology “Chapter 3”
    Human Anatomy Bio 11 Embryology “chapter 3” Stages of development 1. “Pre-” really early embryonic period: fertilization (egg + sperm) forms the zygote gastrulation [~ first 3 weeks] 2. Embryonic period: neurulation organ formation [~ weeks 3-8] 3. Fetal period: growth and maturation [week 8 – birth ~ 40 weeks] Human life cycle MEIOSIS • compare to mitosis • disjunction & non-disjunction – aneuploidy e.g. Down syndrome = trisomy 21 • visit http://www.ivc.edu/faculty/kschmeidler/Pages /sc-mitosis-meiosis.pdf • and/or http://www.ivc.edu/faculty/kschmeidler/Pages /HumGen/mit-meiosis.pdf GAMETOGENESIS We will discuss, a bit, at the end of the semester. For now, suffice to say that mature males produce sperm and mature females produce ova (ovum; egg) all of which are gametes Gametes are haploid which means that each gamete contains half the full portion of DNA, compared to somatic cells = all the rest of our cells Fertilization restores the diploid state. Early embryonic stages blastocyst (blastula) 6 days of human embryo development http://www.sisuhospital.org/FET.php human early embryo development https://opentextbc.ca/anatomyandphysiology/chapter/28- 2-embryonic-development/ https://embryology.med.unsw.edu.au/embryology/images/thumb/d/dd/Model_human_blastocyst_development.jpg/600px-Model_human_blastocyst_development.jpg Good Sites To Visit • Schmeidler: http://www.ivc.edu/faculty/kschmeidler/Pages /sc_EMBRY-DEV.pdf • https://embryology.med.unsw.edu.au/embryol ogy/index.php/Week_1 • https://opentextbc.ca/anatomyandphysiology/c hapter/28-2-embryonic-development/
    [Show full text]
  • Circulatory System
    11/7/2014 Circulatory System 1 11/7/2014 Diffusion is insufficient for transporting substances over long distances It takes 1 second for glucose to diffuse from 100 micro meters It will take 3 hours to diffuse 1 mm! Circulatory systems solves this problem by ensuring that no substances has to diffuse very far toenter or leave the cell! And it connects the cells to the organs that exchange molecules. Transport in small invertebrates Sponges Cnidarians Flatworms 2 11/7/2014 Transport in invertebrates Roundworms Fluid contained within the body cavity of pseudocoelome functions to transport nutrients and wastes but these animals do not have a heart or blood vessels. Open Circulatory System blood is pumped from the heart through blood vessels but then it leaves the blood vessels and enters body cavities, where the organs are bathed in blood. Mollusks and arthropods: (except cephalopods) have an open circulatory system. 3 11/7/2014 Open Circulatory System Arthopods The coelom carries blood (hemolymph). It is called a hemocoel The blood of insects is colorless because it lacks respiratory pigments; it functions to carry nutrients, not gases. Crustaceans and some arachnids have hemocyanin a protein with copper, not within a cell Animals with open circulatory systems generally have limited activity due to limitations in the oxygen delivery capability Insects are able to be active because gas exchange is via a tracheal system. Closed Circulatory System Blood is contained within blood vessels. Valves prevent the backflow of blood within the blood vessels. This type of circulatory system is found in vertebrates and several invertebrates including annelids, squids and octopuses 4 11/7/2014 Closed Circulatory System Earthworms have a dorsal and ventral blood vessel that runs the length of the animal.
    [Show full text]
  • Medical Term Lay Term(S)
    MEDICAL TERM LAY TERM(S) ABDOMINAL Pertaining to body cavity below diaphragm which contains stomach, intestines, liver, and other organs ABSORB Take up fluids, take in ACIDOSIS Condition when blood contains more acid than normal ACUITY Clearness, keenness, esp. of vision - airways ACUTE New, recent, sudden ADENOPATHY Swollen lymph nodes (glands) ADJUVANT Helpful, assisting, aiding ADJUVANT Added treatment TREATMENT ANTIBIOTIC Drug that kills bacteria and other germs ANTIMICROBIAL Drug that kills bacteria and other germs ANTIRETROVIRAL Drug that inhibits certain viruses ADVERSE EFFECT Negative side effect ALLERGIC REACTION Rash, trouble breathing AMBULATE Walk, able to walk -ATION -ORY ANAPHYLAXIS Serious, potentially life threatening allergic reaction ANEMIA Decreased red blood cells; low red blood cell count ANESTHETIC A drug or agent used to decrease the feeling of pain or eliminate the feeling of pain by general putting you to sleep ANESTHETIC A drug or agent used to decrease the feeling of pain or by numbing an area of your body, local without putting you to sleep ANGINA Pain resulting from insufficient blood to the heart (ANGINA PECTORIS) ANOREXIA Condition in which person will not eat; lack of appetite ANTECUBITAL Area inside the elbow ANTIBODY Protein made in the body in response to foreign substance; attacks foreign substance and protects against infection ANTICONVULSANT Drug used to prevent seizures ANTILIPIDEMIC A drug that decreases the level of fat(s) in the blood ANTITUSSIVE A drug used to relieve coughing ARRHYTHMIA Any change from the normal heartbeat (abnormal heartbeat) ASPIRATION Fluid entering lungs ASSAY Lab test ASSESS To learn about ASTHMA A lung disease associated with tightening of the air passages ASYMPTOMATIC Without symptoms AXILLA Armpit BENIGN Not malignant, usually without serious consequences, but with some exceptions e.g.
    [Show full text]
  • Embryology Team 435
    EMBRYOLOGY TEAM 435 [email protected] Development of skeletal and muscular system Objectives At the end of the lecture, students should be able to : o List the different parts of mesoderm and the different divisions of somites. o Differentiate bones according to their embryological origin and mode of ossification. o Describe the ossification of long bones. o Describe the main steps for development of limbs. o Differentiate muscles according to their embryological origin. Important . Extra Embryo Amniotic cavity Embryo Yolk sac INTRAEMBRYONIC MESODERM Proliferates between Ectoderm & Endoderm EXCEPT in the central axis of embryo where NOTOCHORD is found Intraembryonic mesoderm differentiates into 3 parts Lateral mesoderm: divided by Intermediate Paraxial mesoderm: mesoderm on each side of notoc intraembryonic coelom into hord divided into unites (Somites) Somatic Splanchnic mesoderm mesoderm (between endoderm & (between ectoderm & coelom) coelom) INTRAEMBRYONIC MESODERM Cont. Paraxial mesoderm Differentiated into units each unit called Somite dermatome Sclerotome Myotome Form skin medial to the notochord Triangular in shape and it has two sides. lateral to the notochord. forms the axial skeleton except skull Hypaxial Epaxial medial to the sclerotome Most lateral side The notochord will form the CNS ( brain and spinal cord ) , the spin al cord will be surrounded by the Forms the muscles Forms the muscles vertebral column. The vertebral of body walls of the back column with the ribs and the (abdominal wall and (extensors of sternum forms
    [Show full text]
  • Organogenesis Part 2 ______
    Organogenesis Part 2 ___________________________________ ___________________________________ V. Lateral Plate Mesoderm VI. Endoderm ___________________________________ VII. Development of the Tetrapod Limb VIII. Sex Determination ___________________________________ ___________________________________ ___________________________________ ___________________________________ V. Lateral Plate Mesoderm ___________________________________ ___________________________________ paraxial mesoderm chordamesoderm intermediate mesoderm ___________________________________ ___________________________________ ___________________________________ lateral plate mesoderm ___________________________________ ___________________________________ Lateral Plate Mesoderm ___________________________________ Terminology: - Somatopleure: somatic mesoderm plus ectoderm ___________________________________ - Splanchnopleure: splanchnic mesoderm plus endoderm - Coelom: body cavity forms between them ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Lateral Plate Mesoderm ___________________________________ • The Coelom: ___________________________________ – eventually left and right cavities fuse into one ___________________________________ – runs from neck to anus in vertebrates – portioned off by folds of somatic mesoderm ___________________________________ • pleural cavity: surrounds the thorax and lungs • pericardial cavity: surrounds the
    [Show full text]
  • Mesoderma Differenciálódása
    Differentiation of mesoderm Dr. Bódi Ildikó 2019.12.04. 36. Germ cells, fertilization, cleavage (the division of cells in the early embryo) 37. Blastulation, implantation, decidua 38. Development of the embryo shield, ectoderm, endoderm and mesoderm 2 weeks The two-layer embryo shield: epibast and hypoblast Extra-embryonic Coelom Coelom = embryonic body cavity Implantation and gastrulation Gastrulation: The blastula continues to develop, eventually forming a structure called the gastrula. (three-plate embryo shield!!) The extraembryonic mesoderm appears Gastrulation THE DEVELOPMENT OF MESODERMA, DERIVATIVES OF GERM LAYERS (Weeks 3-8 of Development) The TRILAMINAR EMBRYO – 3rd week 1. Induction from the hypolblast cells 2. Proliferation of the epiblast cells 3. Caudal forms the primitive streak with primitive node and primitive groove Heart field (in deep) NEURAL ECTODERM Endoderm 4. The proliferated epiblast cells Epidermis migrate into the 2 layers Medial region of somites Lateral region of 5. Forming the mesoderm somites Intraembrional TRILAMINAR EMBRYO: mesoderm ectoderm, mesoderm, endoderm Stem cells Extraembrional mesoderm chorda dorsalis Parts of Mesoderm Paraxialis mesoderm - somita Intermedier mesoderm gononephrotom Parietalis mesoderm somatopleura splanchnopleura PARTS OF MESODERM AXIAL - green PARAXIAL-yellow INTERMEDIER - red LATERAL - blue •Paraxial mesoderm - somites - musculoskeletal structures •Intermediate mesoderm - urogenital (kidney and genital) •Lateral plate mesoderm - body wall, body cavities, cardiovascular and GIT structures •Paraxial mesoderm - somites - musculoskeletal structures •Intermediate mesoderm - urogenital (kidney and genital) •Lateral plate mesoderm - body wall, body cavities, cardiovascular and GIT structures Week 4Scanning electron micrograph of a cross-section of a human embryo at week 4 (stage 11). Note the mesoderm structures now present and their relative position and size within the embryo.
    [Show full text]
  • High-Yield Embryology 4
    LWBK356-FM_pi-xii.qxd 7/14/09 2:03 AM Page i Aptara Inc High-Yield TM Embryology FOURTH EDITION LWBK356-FM_pi-xii.qxd 7/14/09 2:03 AM Page ii Aptara Inc LWBK356-FM_pi-xii.qxd 7/14/09 2:03 AM Page iii Aptara Inc High-Yield TM Embryology FOURTH EDITION Ronald W. Dudek, PhD Professor Brody School of Medicine East Carolina University Department of Anatomy and Cell Biology Greenville, North Carolina LWBK356-FM_pi-xii.qxd 7/14/09 2:03 AM Page iv Aptara Inc Acquisitions Editor: Crystal Taylor Product Manager: Sirkka E. Howes Marketing Manager: Jennifer Kuklinski Vendor Manager: Bridgett Dougherty Manufacturing Manager: Margie Orzech Design Coordinator: Terry Mallon Compositor: Aptara, Inc. Copyright © 2010, 2007, 2001, 1996 Lippincott Williams & Wilkins, a Wolters Kluwer business. 351 West Camden Street 530 Walnut Street Baltimore, MD 21201 Philadelphia, PA 19106 Printed in China All rights reserved. This book is protected by copyright. No part of this book may be reproduced or transmitted in any form or by any means, including as photocopies or scanned-in or other electronic copies, or utilized by any information storage and retrieval system without written permission from the copyright owner, except for brief quotations embodied in critical articles and reviews. Materials appear- ing in this book prepared by individuals as part of their official duties as U.S. government employees are not covered by the above-mentioned copyright. To request permission, please contact Lippincott Williams & Wilkins at 530 Walnut Street, Philadelphia, PA 19106, via email at [email protected], or via website at lww.com (products and services).
    [Show full text]