ANAT2341 Lab 3

Trilaminar Embryo to Early Embryo

Introduction

The first laboratories covered gametogenesis, fertilization, implantation and early events of embryonic development. The third week (Clinical week 5 LMP) is the begining of the embryonic period which continues through to week eight.

This laboratory will look at the third to fourth week of human development (stage 7 onward). We will be using a range of online materials and resources to explore these topics. The laboratory will also allow time for work on the group online project. Note that during this time the conceptus cells not contributing to the embryo are contributing to placental membranes and the early placenta.

The best way of beginning to understand the sequence is by considering the "stages" of development in relation to age (in days or weeks). Stages are based on the external and/or internal morphological development of the vertebrate embryo, and are not directly dependent on either age or size.

Historically, the human embryonic period proper is divided into 23 Carnegie stages and criteria beyond morphological features include age in days, number of somites present, and embryonic length have sometimes been included in the stage descriptions. These stages are also shown in the movie Carnegie stage human growth through embryonic period.

Objectives

1. Understand the conceptus changes during week 3 and 4.
2. Understand the process of gastrulation and the trilaminar embryo.
3. Understand the development of the germ layers: mesoderm and ectoderm.
4. Identify abnormalities associated with this period of development.

ANAT2341 Course Timetable   Week (Mon) Lecture 1 (Mon 1-2pm) Lecture 2 (Tue 3-4pm) Practical (Fri 1-3pm) Week 2 (1 Aug) Introduction Fertilization Lab 1 Week 3 (8 Aug) Week 1 and 2 Week 3 Lab 2 Week 4 (15 Aug) Mesoderm Ectoderm Lab 3 Week 5 (22 Aug) Early Vascular Placenta Lab 4 Week 6 (29 Aug) Gastrointestinal Respiratory Lab 5 Week 7 (5 Sep) Head Neural Crest Lab 6 Week 8 (12 Sep) Musculoskeletal Limb Development Lab 7 Week 9 (19 Sep) Renal Genital Lab 8 Mid-semester break Week 10 (3 Oct) Public Holiday Stem Cells Lab 9 Week 11 (10 Oct) Integumentary Endocrine Lab 10 Week 12 (17 Oct) Heart Sensory Lab 11 Week 13 (24 Oct) Fetal Birth and Revision Lab 12 ANAT2341 2016: Moodle page | ECHO360 | Textbooks | Students 2016 | Projects 2016

ANAT2341Lectures - Textbook chapters   Lecture (Timetable) Textbook - The Developing Human Textbook - Larsen's Human Embryology Embryology Introduction Introduction to the Developing Human Fertilization First Week of Human Development Gametogenesis, Fertilization, and First Week Week 1 and 2 Second Week of Human Development Second Week: Becoming Bilaminar and Fully Implanting Week 3 Third Week of Human Development Third Week: Becoming Trilaminar and Establishing Body Axes Mesoderm Fourth to Eighth Weeks of Human Development Fourth Week: Forming the Embryo Ectoderm Nervous System Development of the Central Nervous System Early Vascular Cardiovascular System Development of the Vasculature Placenta Placenta and Fetal Membranes Development of the Vasculature Endoderm - GIT Alimentary System Development of the Gastrointestinal Tract Respiratory Respiratory System Development of the Respiratory System and Body Cavities Head Pharyngeal Apparatus, Face, and Neck Development of the Pharyngeal Apparatus and Face Neural Crest Nervous System Development of the Peripheral Nervous System Musculoskeletal Muscular System Development of the Musculoskeletal System Limb Development of Limbs Development of the Limbs Renal Urogenital System Development of the Urinary System Genital Urogenital System Development of the Urinary System Stem Cells Integumentary Integumentary System Development of the Skin and Its Derivatives Endocrine Covered through various chapters (see also alternate text), read head and neck, neural crest and renal chapters. Endocrinology Textbook - Chapter Titles   Nussey S. and Whitehead S. Endocrinology: An Integrated Approach (2001) Oxford: BIOS Scientific Publishers; ISBN-10: 1-85996-252-1. Chapter 1. Principles of endocrinology Chapter 2. The endocrine pancreas Chapter 3. The thyroid gland Chapter 4. The adrenal gland Chapter 5. The parathyroid glands and vitamin D Chapter 6. The gonad Chapter 7. The pituitary gland Chapter 8. Cardiovascular and renal endocrinology Full Table of Contents Heart Cardiovascular System Development of the Heart Sensory Development of Eyes and Ears Development of the Eyes Fetal Fetal Period Fetal Development and the Fetus as Patient Birth and Revision Additional Textbook Content - The following concepts also form part of the theory material covered throughout the course. Principles and Mechanisms of Morphogenesis and Dysmorphogenesis Common Signaling Pathways Used During Development Human Birth Defect

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Cite this page: Hill, M.A. (2024, April 25) Embryology ANAT2341 Lab 3. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/ANAT2341_Lab_3

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G