learn about each. In this lab I will observe each membrane. Basically just getting to know each membrane better. Exercise 1: The Microscopic Structure of Cutaneous Membranes Observations: Draw your sketch of keratinized stratified squamous epithelium here. Label the keratinized layer. Describe the structures and cells you observed. QUESTIONS: A. What is keratin? Tough fibrous protein. B. Why is your skin keratinized? To protect the skin from the outside. Exercise 2: Microscopic Structure
Premium Skin Rheumatoid arthritis Membrane biology
here) *two slides -Cyst that arises from epithelium entrapped within lymphoid tissue. It presents as a superficial submucosal mass that is yellow or whitish in coloration. The most frequent location is in the floor of the mouth followed by the posterior lateral border of the tongue‚ soft palate‚ tonsillar pillars‚ orophorynx‚ and the ventral tongue. The entrapped epithelium may have originated from salivary gland ducts or from the lining epithelium of surface invaginations plugged with
Premium Squamous cell carcinoma Cancer
ESC 495 Glutaraldehyde Glutaraldehyde is an oily‚ colorless liquid chemical with a strong‚ pungent smell. It is an organic compound with the formula CH2(CH2CHO)2.Glutaraldehyde has several applications; it is used as a cold sterilant in the health care industry‚ primarily to disinfect medical equipment‚ as well as dental equipment. Glutaraldehyde is used as a biocide (meaning it can deter harmful organisms) in metalworking fluids and in oil and gas pipelines. Glutaraldehyde can
Free Respiratory system
The Effect of Mercury on Sodium Transport Across a Cane Toad (Bufo Marinus) Skin Epithelium Tchong Lioong CHEUNG KAI SUET School of Biomedical‚ Bimolecular and Chemical Sciences‚ Department of Physiology‚ The University of Western Australia‚ Crawley‚ Australia 6009. Received 23rd April 2012; revised 7th May 2012; accepted 7th July 2012 _____________________________________________________________________________ Abstract Mercuric Chloride (HgCl2) was used to investigate apical Sodium
Premium
Despite the complexity of the human body and the diversity of organs it contains; there are only four tissues called basic or principal tissues - these are epithelium‚ connective tissue‚ muscle and nerve tissue. The following paragraphs describe the main structural features‚ functions and sub-divisions of each type of tissue. EPITHELIUM Epithelium is characterised by closely packed cells and has very little extra-cellular material (ground substance or fibres). Cells are held together by means of
Premium Scientific method Psychology Sociology
(air sac) in the lung is composed of which type of epithelium? simple squamous epithelium Yes‚ this single layer of squamous cells is ideal for the diffusion of gases in the lungs. 1) The proximal tubule of the nephron (kidney tubule) in the kidney is composed of which type of epithelium? simple cuboidal epithelium Yes‚ the simple cuboidal cells line the kidney tubules (nephrons) so that secretion and absorption can take place. 2) The epithelium of the esophagus is composed of which type of epithelial
Premium Marketing Management Strategic management
Ductal hyperplasia Ductal hyperplasia is characterized by proliferation of ductal epithelium‚ resulting in increased cellularity and multi layering of ductal epithelium. The pattern of growth varies greatly from case to case leading to different types of ductal hyperplasia. Features indicative of benign nature of the lesion includes oval nuclei with indistinct cytoplasmic border and eosinophilic rather than pale cytoplasm‚ arrangement of the cells in parallel bundles‚ presence of peripheral elongated
Premium Cancer Oncology Metastasis
The Organisation Level of an Organ System. There are 11 organ systems in the body such as the reproductive system‚ digestive system and the cardiac system. The first level organisation is the organelles which collect together to produce a cell. The organelles all have a function in the cell to keep it alive. For example the mitochondria is an organelle in a cell which has the role of respiration in the cell. The mitochondria produces ATP which involves contracting muscles‚ taking part in cell division
Premium Cell Protein DNA
junction c) plasmodesmata d) adhesion junction e) desmosome _____27. Haversian canals and a matrix of crystals of calcium phosphate would be found in a) teeth b) nails c) hooves d) bone e) cartilage _____28. Cuboidal epithelium would be found a) in the walls of the heart. b) in the knees and other joints as well as in the nose and tracheal rings. c) on the surface of the skin. d) lining glands and kidney tubules‚ and covering the ovaries. e) in tendons and the sheath
Premium Cell Organelle Biology
RESPIRATORY SYSTEM Respiration (processes) 1. Ventilation and breathing‚ which is the movement of air into and out of the lungs 2. Exchange of oxygen and carbon dioxide between the air in the lungs and the blood 3. Transport of oxygen and carbon dioxide between the blood and tissues 4. Exchange of oxygen and carbon dioxide between the blood and tissues. Function 1. Regulation of blood pH 2. Voice production 3. Olfaction 4. Innate immunity ANATOMY OF THE RESPIRATORY SYSTEM A. Upper respiratory
Premium Respiratory system