The mammary glands in female rats are compound tubuloalveolar glands composed of a highly branched system of ducts and terminal secretory alveoli arranged in lobules. In ruminants such as cows, goats, and deer, the mammary glands are contained in their udders. Dr.Kensarah *, - Title: Breast Anatomy and Location of Disease Processes Author: cwc336 Last modified by: ntecuser Created Date: 7/5/2006 8:30:02 AM Document presentation format, - Title: BREAST CANCER Author: q Last modified by: Gokhan Created Date: 4/29/1995 5:20:15 AM Document presentation format: Ekran G sterisi Other titles, Role of Nodal Irradiation in Breast Cancer. Slide 265 Nipple, areola H&E View Virtual Slide. Identify the gross anatomical features- location, extent, deep relations, and structure and blood supply of breast. Note the differences in morphology of the cells as they move toward the surface. • Mammary gland has high metabolic activity and responds to hormonal and neural stimuli • Thus it is an ideal “model” system to study mechanisms of biochemical control. The gland is comprised of 15-20 secretory lobes which are separated by fibrous bands called the suspensory ligaments of the breast (of Cooper). - Organ system Histology (Skin and its appendages. Once the ductal tree reaches maturity, the terminal ends become inactive blunt terminal ducts without alveolar development set in mature adipose tissue (B). Note the tops of the goblet cells protruding between the cilia. Understand the multiple, cellular mechanisms involved in the formation and release of milk. In many sections, portions of a large excretory, lactiferous duct slide 261 View Image are present. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. - Triple-Negative Breast Cancer And its Clinical Implication * * * * * Clinical Implication 1. This type of epithelium covers surfaces that are subjected to abrasion. The orientation of the tissue can be confusing because of connective tissue projections that push up into the epithelium. They are generally considered to be localized on the apical surface of epithelial cells. Correct answer 2. Their alveoli are fully developed only in the course of pregnancy and lactation. The basement membrane is not always this thick in other epithelia (Note that "basal lamina" is a term that refers to an ultrastructural feature while "basement membrane" refers to a light microscopic feature. 14 Mammary Gland: Structure Alveoli opening into ductSuspensory ligament running from skin to P Major 15. Ruská 87, 100 00 Prague 10. The yellow colored area indicates the outline of one cell (see previous wall chart #153 for plane of section). 153 Trachea - ciliated pseudostratified epithelium Respiratory View Virtual EM Slide Hence, some of the strategies that are used to skirt these problems are INTRODUCTION TO LACTATIONAL PHYSIOLOGY • Class Mammalia - Animals having hair and mammary glands • Mammal • Comes from Latin mamma: breast milk or milk gland. 156 Cilia - Cross-sectioned in human trachea View Virtual EM Slide 190 Esophagus - Stratified Squamous non-keratinized epithelium View Virtual EM Slide Stratified squamous nonkeratinizing epithelium, Slide 153 (esophagus, H&E) View Virtual SlideSlide 126 (trachea, esophagus) View Virtual Slide [see orientation]Slide 250 (vagina, H&E) View Virtual Slide, This type of epithelium covers some internal surfaces that are kept moist by mucus or other fluids. Compare the morphology of the inactive and active gland. Under it, you can see connective tissue, which we will study next time. Salivary Glands. The basement membrane looks like a pink line at the base of the epithelium, which is rather easily seen in places on this slide. They are immotile (they do not move on their own). https://en.wikivet.net/Mammary_Gland_-_Anatomy_&_Physiology Lactation Physiology Mammary Gland. The cilia appear as hairlike projections at the cell apex. In contrast to the mammary glands of humans, which consist of 15–20 separate glands with individual openings onto the nipple, each gland in the rat has a single (main) lactiferous duct entering the nipple. In some slides, the keratinized region is gray, but occasionally it has been penetrated in places by red stain. Boasting an impressive range of designs, they will support your presentations with inspiring background photos or videos that support your themes, set the right mood, enhance your credibility and inspire your audiences. Otherwise, look for tubular or circular profiles at low power and examine the endothelial lining of these vessels at high power. Each of theses lobes is a compound tubular acinar gland. They are all artistically enhanced with visually stunning color, shadow and lighting effects. The placenta is a key organ for pregnancy evolution and fetal growth. This epithelium is found at the surface of the skin and is known as the epidermis. The basal bodies are centrioles and have 9 triplets of microtubules with no central pair. The ducts from each lobule empty into a lactiferous duct that empties onto the surface of the nipple. View and Download PowerPoint Presentations on Mammary Gland PPT. This chapter describes the placental development, the macroscopic aspect and the histological characteristics through the gestation. Peripheral Nervous System. These slides show simple cuboidal epithelium, lining tubules in the kidney. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. View histology_1_lec5_glands.ppt from JH HHGG at Al-Quds University. Specifically, the portion of the peritoneum that is applied against the walls of the cavities is known as "parietal peritoneum" whereas the portion covering the organs (and their associated mesenteries) is the "visceral peritoneum.". English. What are the differences among cilia, microvilli, stereocilia and kinocilia (which you will come across later)? Histology of Human Placenta. The covering skin shows:• Areola: central pink area of skin, deeply pigmented during pregnancy• Nipple: – An elevation in the center of the areola – It contains 15-25 opening of lactiferous duct This EM micrograph depicts the typical appearance of microvilli on the apical surface of two types of cells with a striated or brush border. The lubrication provided by mucus helps to protect against abrasion. Mammary glands are regulated by the endocrine system and become functional in response to the hormonal changes associated with parturition. The line indicates the plane of section on EM#154. The villi are lined by a simple epithelium, and, therefore, you should ideally see a single row of dark nuclei toward the base of the cells (you may see more if the epithelium is cut tangentially). 65 Epidermis Stratified Squamous Keratinizing Epithelium. A desmosome can be seen in the upper right corner of this transmission electron micrograph. Mammary gland• These are a pair of compound tubulo-alveolar glands to nourish new- borns• The histological structure varies according to sex ,age & physiologic status 6. Correct answer 1. In the Which of the following statements regarding microvilli is FALSE? Slide 261 Mammary gland active lactating H&E View Virtual Slide. The junction shown is a field of GAP JUNCTIONs. - The core of microvilli consists of ACTIN filaments. Transitional epithelium is confined to the urinary tract and is adapted for extensibility and water impermeability, as when the bladder fills with urine. The proliferation of these cells lead to the formation of secretory alveoli. It posseses dense plaques that are anchored to intermediate filaments. The inner layer are the actual ductal epithelial cells whereas the outer layer of cells is, in fact, a layer of myoepithelial cells. As protection against desiccation, it undergoes a process known as cornification or keratinization. Ridges eventually disappear, except at fourth intercostal space where mammary gland develops Week 15 - 20: Mesenchyme condenses around epithelial stalk under testosterone influence Solid epithelial columns develop within mesenchyme Week 20 - 32: Differentiation of mesenchyme into fat within collagenous stroma Stroma of reticular dermis forms suspensory ligaments of Cooper, … Ultrastructure refers to structures seen at the electron microscope level. This is the lining of the esophagus, where it is no longer necessary to have an outer keratinized layer to protect against desiccation, as it was for skin. 40,970 Deaths Breast Cancer Facts & Figures ... 40,170 Deaths (40,970 in 2006) Breast Cancer Facts & Figures 2008-2009 (ACS) Breast Cancer Deaths ... Clinical Trials Evaluating the Role of Sentinel Node Resection in Patients with Early-Stage Breast Cancer, - Clinical Trials Evaluating the Role of Sentinel Node Resection in Patients with Early-Stage Breast Cancer, Chapter 5-- Histology (microscopic anatomy). And they’re ready for you to use in your PowerPoint presentations the moment you need them. The spiny appearance of cells deeper in the epithelium can also often be seen in the light microscope. There is shortage of references in higher teaching institutions especially in newly opened institutions engaged in training of various Veterinary professionals in the country. The endocardium, the simple squamous epithelial lining of the heart, can be seen at the top of this section. Intercostal art – – 2,3,4th ICS lat br – 2nd IC Art largest br – • supply upper breast, Nipple and … There are two subclasses: 1. The epithelial lining is again two layered, the bottom layer being principally myoepithelium. Thus, endothelium is generally identified on the basis of the structure and position of nuclei alone; that is, the nuclei are also often flattened and elongated, and are found lining the lumen of the vessel. 4 Hormonal regulation and characteristics of breast development at puberty The onset of cyclic production of estrogen and progesterone at puberty leads to the characteristic anatomical and histological changes of mature breasts. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. The mammary glands are one of the distinguishing features found on mammals. wellbeing. A healthy mammary gland is one the basis to product commercialisable dairy products, in terms of quality and quantity. Note again the spiny appearance of the cells, due to the desmosomal attachments. Slide 259 Mammary gland inactive nulliparous H&E View Virtual SlideSlide 258 Mammary gland active, pregnant H&E View Virtual SlideSlide 261 Mammary gland active lactating H&E View Virtual Slide. Health Information Technology & Services. Distinguish normal histology of lactating and … Simple squamous epithelial cells are flattened, i.e., wider than they are tall. Both the epithelial cells and myoepithelial cells increase in number. Note also that there is very little other tissue between tubules, so that you often see two rows of cuboidal epithelia from adjacent tubules back to back. MAMMARY GLAND IN MAMMALS… In Humans, the mammary glands are situated on the breasts. These cells secrete mucus; the clear "balloon" in the apical region of each goblet cell is where the stored mucus is located (mucus does not react with H&E stain). These ligaments originate from the underlying thoracic fascia and insert to the dermis of the overlying skin, supporting the non-ptotic shape of the breasts. Associate Professor, Department of Radiation Medicine OHSU Review of nodal anatomy The primary drainage ... - Phyllodes breast tumor Joint Hospital Surgical Grand Round 26 April 2014 Ng Yuen Shan, Sandy (Tuen Mun Hospital) Triple assessment, in patients with phyllodes tumors ... - Title: Breast Imaging - Anatomy and Techniques Author: CEIngram Last modified by: Pre-installed Created Date: 10/23/2000 9:44:07 AM Document presentation format. Alveoli slide 261 View Image have formed, their epithelial cells have large, clear areas of apical cytoplasm, a region occupied by glycogen and lipid. Mammary Gland. MAMMARY GLAND IN MAMMALS… 5. • 2. Also, note that, in some areas, these villi are transversely sectioned and appear instead as circular profiles. When compared with the inactive mammary gland, you can see that the intralobular ducts have proliferated to form additional secretory regions. The urinary tract - epithelium shown is transitional epithelium (note the DOME-shaped cells), which lines the urinary tract. Sometimes the blood vessels contain red blood cells and can be identified that way. Slide 211 (nondistended ureter, human, H&E) View Virtual SlideSlide 19-1, "odd" (distended ureter, rat, H&E) View Virtual SlideSlide 19-2, "even" (non-distended ureter, rat, H&E) View Virtual SlideDuke University Slide 98, (non-distended bladder, H&E) View Virtual Slide (virtual slide courtesy of Duke University). Access to the supplemental resources for this session is password-protected and restricted to University of Michigan students. 2. Stratified squamous keratinizing epithelium, Slide 106 (plantar skin, H&E) View Virtual SlideSlide 112 (plantar skin, H&E View Virtual Slide. Like the other tissues in the female reproductive system, alterations in circulating hormone levels result in histologically demonstrable changes in the mammary gland. A type of intercellular junction as viewed by routine transmission electron microscopy in panel A and in a freeze-fracture preparation in panel B. Pancreas. 120 Left Atrioventrical Valve - Bicuspid or mitral valve Simple Squamous Epithelium View Virtual EM Slide Also, it is a columnar epithelium, so the cells should be taller than they are wide. 50,000 to 70,000 new cases ... - Breast Pain and Nipple Discharge Philip Turton Consultant Breast, Oncoplastic, and Aesthetic Breast Surgeon Leeds General Infirmary ... BREAST%20CANCER%20UPDATE%20DETECTION%20TO%20DIAGNOSIS. Mammary gland, milk-producing gland characteristic of all female mammals and present in a rudimentary and generally nonfunctional form in males. Let’s now review the mammary gland histology. You can appreciate that this epithelium (skin) is stratified (has multiple layers of cells) and that the layers near the surface (at the top of the micrograph) have keratinized (lost their nuclei and become a layer of keratin). The junctions found in the spinous layer are called desmosomes. In which organ/organ system would expect to find this type of epithelium? Do you have PowerPoint slides to share? They are points of cell-cell attachment, made more obvious by shrinkage during preparation. Wheater's (5th ed), Cell Structure and Function (Review), Ross and Pawlina (6th ed), Chapters 1-3 Cells and methods of study (Review), Ross and Pawlina (6th ed), Chapter 4, Tissue concept and classification, Ross and Pawlina (6th ed), Chapter 5, Epithelial tissue, Ross and Pawlina, Chapters 23 pages 863-870, Except where otherwise noted, this work is licensed under a, Michigan Histology and Virtual Microscopy Learning Resources, Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. Lactation Physiology Mammary Gland Slides courtesy of Dr. H.D. Note also that not all lobules within the gland have proliferated to the same degree. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Mammary Gland PPT Zool 1072 Human Anatomy And Physiology 257681 PPT. 5- My ofilaments. Breast Cancer. Separated from teat cistern by the cricoid fold. First, examine slide 29 at low power and note finger-like projections of intestinal villi. MAMMARY GLAND By Dr IRAM TASSADUQ INTRODUCTION Mammary Glands exist in both sexes. Compare the examples of an inactive and active glands, noting the differences in the amount of glandular tissues. In the non-distended ureter, note the shape of the large surface cells, which are frequently dome-shaped and may bulge out into the lumen. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. The mammary glands of other mammals that have more than two breasts, such as dogs and cats, are sometimes called dugs. INDIA. The typical 9+2 arrangement of the microtubules is especially evident. The molecules to be The objective of this distance learning course is to understand the basis of mammary gland: physiology and anatomy. 16 Epithelium - Desmosome and Intermediate Filaments View Virtual EM Slide Each breast is made up of 15-25 secretory lobes, embedded in adipose tissue. The surface cells have been stretched thin, as have the other layers, and there actually appear to be fewer layers, as the cells can slide past one another to a certain degree. The spinous layer of stratified squamous epithelium got its name because the desmosomes linking adjacent cells gives them a "spiny" appearance. Now, compare with the distended ureter (this tissue was artificially over-distended to make a point about the capacity of this epithelium). 154 Trachea - Respiratory Epithelium Respiratory Epithelium (tangential section) View Virtual EM Slide Note that the dense irregular connective tissue of the dermis is interrupted by numerous fascicles of smooth muscle slide 265 View Image that insert into the dermal connective tissue (much like arrector pili muscles). Whole mount (A) and histology of the mature adult mouse mammary gland. ), 2. If you are a University of Michigan student enrolled in a histology course at the University of Michigan, please click on the following link and use your Kerberos-password for access to download lecture handouts and the other resources. 46: My oepithelial cell "Basket cell": 1 - Saliv ary adenomere. Interlobular (between lobules) connective tissue, on the other hand, is dense and collagenous and contains fewer cells. To understand the basis of the working of What substructures form the core of each cilium? The absence of nuclei in this layer shows that it is devoid of live cells. Unlike keratinizing epithelium, nuclei are still present in most surface cells (although they are often difficult to see in sectioned tissue. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, PowerShow.com is a great resource. Refer to the diagram at the end of this chapter for the tissue orientation and consult the atlas for the cell types that make up the epithelium.
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