Oxygen Exchange and Transport Oxygen exchange or respiration takes place at a respiratory surface; a boundary between the external environment and the interior of the body. Gas exchange is the process by which oxygen and carbon dioxide (the respiratory gases) move in opposite directions across an organism’s respiratory membranes‚ between the air or water of the external environment and the body fluids of the internal environment. Oxygen is needed by cells to extract energy from organic molecules
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dioxide. Filters‚ warms‚ and humidifies the air. Produces sound (speech). Helps with sense of smell. Assists to regulate the pH within the blood. 9.02 Nose- Nares/Nostrils- Allow entrance for air. Nasal Cavity- Lined with mucous & ciliated epithelium. Air is filtered‚ warmed‚ and humidified. Nasopharynx- Part of the throat serving only as a passageway for air. Pharynx- Throat. 3 Passageways that serve for air and food. Larynx- Voice box. The epiglottis helps to prevent food from entering
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Helicobacter pylori: Epidemiology‚ Pathogenesis and Diagnosis "If these bacteria are truly associated with antral gastritis‚ as described by Warren‚ they may have a part to play in poorly understood‚ gastritis associated diseases (i.e. peptic ulcer and gastric cancer)." Barry Marshall‚ 19831 Introduction: Barry Marshall’s and J. Robin Warren’s (now "classic") letters to the Lancet in June 1983 suggesting that the‚ then unidentified‚ curved bacilli found in human gastric epithelia "may have a
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microscope and their functions. Students will identify the cell structures using the microscope. Materials Light microscope Microscope slides Coverslip Toothpick Distilled water Demo slides Method Observation Exercise 1: Human Cheek Epithelium (Eukaryotic Animal Cell) 1. A clean toothpick was used to scrape the inside of my cheek gently. 2. The scrapings was stirred into a drop of distilled water on the slide and the coverslip
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Female Genitalia Health Assessment Lecture Objectives: * Describe the structure and function of the female genitalia * Describe particular developmental and transcultural considerations. * Collective subjective and objective data. * Record the findings. * Identify the appropriate nursing diagnoses for problem areas identified. Female Genitalia Structure & Function * Consists of external and internal structures External: * vulva or pudendum (extends from
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ACUTE GASTROENTERITIS Gastroenteritis is inflammation of the gastrointestinal tract‚ involving both the stomach and the small intestine and resulting in acute diarrhea. It can be transferred by contact with contaminated food and water. The inflammation is caused most often by an infection from certain viruses or less often by bacteria‚ their toxins‚ parasites‚ or an adverse reaction to something in the diet or medication. ANATOMY AND PHYSIOLOGY The GIT is composed of two general parts‚ the main
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This is a cross section of the esophagus. Number 1 represents the lumen of the esophagus. Identify the tissue types indicated by 2 and 3. 2. stratified squamous epithelium 3. laminia propria [pic] Below is a picture of intestinal villi. Identify the tissue type at 1 and the cell type at 3. [pic] 1. absorptive epithelium 3. Goblet cell Below is a photo of the trachea. Identify the cell modifications at 1‚ and the tissue types at 2 and 3. 1. mucus of goblet cell 2. pseudostratified
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Farah cabe Psychology 2010 Ch‚1‚2‚3 text Homework 6) Like Wilhelm Wundt’s structuralism‚ Sigmund Freud’s psychoanalytic theory emphasized C) menatal processes Study sets with a ’psychoanalytic theory’ term meaning ’a theory developed by freud that attempts to explain personality‚ motivation‚ and mental disorders by focusing on unconscious determinants of behavior. 12) Glial cells a) Form myelin Supporting elements‚ blood brain barrier‚ dilate blood vessels. oligodendrocyte and Schwann
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and tissue changes progressing from dysplasia to carcinoma in situ and then to invasive cancer. Presence of anaplastic cells and loss of normal tissue architecture signify the development of cancer. This progression is easily seen in the squamous epithelium. The high rate of cell division‚ local mutagens‚ and inflammatory mediators all contribute to the accumulation of genetic abnormalities that lead to cancer. The mutation of these cells can happen at a chromosomal or genetic level and once it happens
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Urinary SystemAnatomy and Physiology Zoe McCarthy 1 Urinary System in Context 2 Urinary System in Context System How does it do it? 3 Functions of the Urinary system • 1. Regulating blood volume and pressure • 2. Regulating plasma concentrations of sodium‚ potassium‚ chloride and other ions • 3. Stabilising blood pH • 4. Conserving nutrients • 5. Detoxifying poisons (with the liver) 4 Organisation of the Urinary System • • • • Kidneys Ureters Urinary bladder Urethra 5 Position of
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