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, … 120 Left Atrioventrical Valve - Bicuspid or mitral valve Simple Squamous Epithelium View Virtual EM Slide Oral Cavity. Let’s now review the mammary gland histology. To understand the basis of the working of Only some of these cells reach the free surface of the epithelium, where it is generally ciliated and contains goblet cells. 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). Mammary Gland. The proliferation of these cells lead to the formation of secretory alveoli. Transitional Epithelium. • 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. To learn on different aspect in milking. Mammary gland 1. The junction shown is a field of GAP JUNCTIONs. Note the tops of the goblet cells protruding between the cilia. And, best of all, most of its cool features are free and easy to use. The cilia appear as hairlike projections at the cell apex. INDIA. Lobules. Rudimentary in males throughout life Start developing at puberty Most of the ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 50220d-MjFkZ Assistant Professor of Pathology Medical College Majma ah University, - Breast Cancer and Chemotherapy. Note also the increased cellularity (especially, the plasma cells) of the intralobular connective tissue. The line indicates the plane of section on EM#154. The typical 9+2 arrangement of the microtubules is especially evident. Click on a question to reveal the answer. 156 Cilia - Cross-sectioned in human trachea View Virtual EM Slide Compare the morphology of the goblet cells with that of the other cells of the epithelium. • 2. Slide 265 Nipple, areola H&E View Virtual Slide. This tissue was probably taken from an individual before the last trimester. Correct answer 2. Compare the examples of an inactive and active glands, noting the differences in the amount of glandular tissues. GLANDULAR EPITHELIA Glandular Epithelia Glandular epithelia are formed by cells specialized to secrete. Be able to identify the classes of epithelia underlined in the text below, and give some thought to why these different classes of epithelia have such different morphologies. 154 Trachea - Respiratory Epithelium Respiratory Epithelium (tangential section) View Virtual EM Slide MAMMARY GLAND LECTURE BY DR. ABDUL WAHEED ANSARI PROF. OF ANATOMY, MES MEDICAL COLLEGE, PERINTALMANNA.KERALA. They contain a core of keratin intermediate filaments. If so, share your PPT presentation slides online with PowerShow.com. Slide 29 (small intestine) View Virtual Slide, Slide 176 40x (colon, H&E) View Virtual Slide. In other parts of the section, look for tubules in cross-section in slide 9N-1 View Image or slide 210 View Image where the lumen will be surrounded by a circle of cells. 213 Small intestine - microvilli View Virtual EM Slide While understanding the light microscopic structure of tissues and organs is important for interpreting pathological change, much of the really interesting biological side of medicine now involves understanding cell structure in more detail. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. Look around on the slide until you find a region of epithelium having this appearance. A healthy mammary gland is one the basis to product commercialisable dairy products, in terms of quality and quantity. A simple squamous epithelium, called "endothelium," lines blood vessels, lymphatic vessels, and the chambers of the heart. 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. They are all artistically enhanced with visually stunning color, shadow and lighting effects. Steps for Properly Setting Up a Microscope. Each of theses lobes is a compound tubular acinar gland. Also, it is a columnar epithelium, so the cells should be taller than they are wide. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Peripheral Nervous System. Mature Bone. It allows for the passage of ions (and other small molecules) from one cell to another. What substructures form the core of each cilium? Shown is the epithelial lining cell of a proximal tubule in the kidney. We assume that you already have a general knowledge of cell ultrastructure and can recognize the nucleus, mitochondria, cell membranes, endoplasmic reticulum and ribosomes. 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). Identify the gross anatomical features- location, extent, deep relations, and structure and blood supply of breast. On the other hand, the protein components are released by the usual mechanism of exocytosis. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. Identify the type of epithelium that is depicted in this image. Sebaceous glands slide 265 View Image are present to a variable extent, especially in the areola. Identify the type of epithelium in this image. Simple columnar - the epithelium is simple columnar (with microvilli). Deeper in the connective tissue, the ducts acquire a stratified columnar appearance that is really a cuboidal duct cell sitting on a myoepithelial cell as in the sweat gland. Simple squamous epithelial cells are flattened, i.e., wider than they are tall. PowerShow.com is a leading presentation/slideshow sharing website. This chapter describes the placental development, the macroscopic aspect and the histological characteristics through the gestation. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. Note the presence of goblet cells, which look like balloons suspended in the epithelium. A type of intercellular junction as viewed by routine transmission electron microscopy in panel A and in a freeze-fracture preparation in panel B. Unlike keratinizing epithelium, nuclei are still present in most surface cells (although they are often difficult to see in sectioned tissue. Slide 40 (trachea, H&E) View Virtual SlideSlide 126 (trachea, esophagus) View Virtual Slide [see orientation].