nflammatory bowel disease (IBD) encompasses two illnesses - Crohn’s disease (CD) and ulcerative colitis (UC) - that are characterized by chronic intestinal inflammation. The disease progression of IBD is heterogeneous‚ as is the response of individual patients to different treatments. Typically IBD and the resultant inflammation cause a combination of abdominal pain‚ diarrhea‚ intestinal bleeding‚ weight loss‚ malabsorption and nutritional deficiencies. The onset of IBD is greatest in early adulthood
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above skin; root is below within follicle FUNCTIONS OF HAIR 1. Sensation 2. Communication • Facial‚ pubic and auxiliary hair • Eyebrows 3. Protection • Barrier 4. Thermoregulation THE EPIDERMIS • It is composed of stratified squamous epithelium (ET) and a simple basal layer of cuboidal cells. • It lacks blood vessels‚ but the deepest layer‚ the stratum basale‚ is close to the dermis and receives nutrients. • The thickness of the epidermis varies with region of the body. CELLS OF EPIDERMIS
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also significant participants in allergic responses‚ hence the similarities between allergic reactions and asthma attacks. Other changes include mucus plugging of the airways‚ interstitial edema‚ and microvascular leakage. Destruction of bronchial epithelium and thickening of the subbasement membrane is also characteristic. In addition‚ there may be hypertrophy and hyperplasia of airway smooth muscle‚ increase in goblet cell number‚ and enlargement of sub-mucous glands. Although causes of the initial
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Did you get it? 1. What’s the role of eyelids? To protect the eyes. 2. Which structure of eye forms tears? Lacrimal glands 3. What are tears? A dilute saline solution containing lysozyme and antibodies. 4. What’s the visual role of the external eye muscles? They direct the eyeball toward what you wish to see. 5. What is the meaning of the term blind spot in relation to the eye? The blind spot contains no photoreceptors; it is the site where the optic nerve leaves the eyeball 6. What function
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ORAL EMBRYOLOGY 2 Introduction: Oral embryology is the study of the developmental stages of the teeth and oral cavity from conception to before the birth of a fetus. The face and oral cavity all begin to devolp within the embryonic period of pregnancy. For the oral cavity to be fully functional it has to go through many different developmental stages. The development of the oral cavity begins within the third week of pregnancy when the Ectoderm and Mesoderm
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Body fluids are maintained at a constant level by several homeostatic mechanisms: Osmosis- is the diffusion of water through a selectively permeable membrane known as a plasma membrane. Water is highly polar it is repelled by the lipid core (nonpolar) of the plasma membrane but can easily pass through the aquaporins created by the proteins in the membrane‚ so osmosis is happening all the time as water moves into and out of cells. Diffusion- Is where ions move away from an area where they are
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Thyroid gland: is a butterfly shaped gland‚ located in front of the trachea ‚ secreting hormones T3 triiodothyronine and T4 thyroxine. Observed at the labpaq website and noted in the slide the thyroid follicles‚ colloid‚ and simple cuboidal epithelium and C cells. Parathyroid gland: is located behind the thyroid. It secretes parathyroid hormones - PTH that regulates calcium and phosphate. Observed at labpaq website Chief cells and oxyphil cells were noted. Thymus gland: it lies under
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vulnerable organ • skin is the most vulnerable organ – exposed to radiation‚ trauma‚ infection‚ and injurious chemicals • body’s largest and heaviest organ Skin and Subcutaneous Tissue • consists of two layers: – epidermis – stratified squamous epithelium – dermis – connective tissue layer – hypodermis • another connective tissue layer below the dermis • not part of the skin • contains fat tissue (for insulation)‚ blood vessels and nerves • thick skin – on palms and sole‚ and corresponding
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SENSATION AND PERCEPTION * One of the basic processes in the interaction of man and his environment that governs the reception of information. * Man must be able to sense‚ interpret‚ and respond to various events and stimulations. The study of reception and function of stimulation may be divided into two parts: * Sensation – considers the mechanism of receiving information * Perception – considers the received information and past experiences. SENSATION * Sensations that can
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Part 1 of 17 - 1.67/ 5.0010004 Points Question 1 of 60 0.0/ 1.667 Points All of the following belong to feedback systems which control homeostasis EXCEPT A. All of the above are basic components of the feedback system. B. control center. C. receiver. D. receptor. E. effector. Answer Key: C Feedback: Please review chapter 1. Question 2 of 60 0.0/ 1.667 Points Group of related organs that have a common function is called a(n) A. organ.
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