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Bone is not a static part of the body — it's constantly being resorbed (broken down) and formed throughout your life. Your entire skeleton is replaced about every decade, according to the NIH. During your childhood and teenage years, bone formation occurs more quickly than bone resorption, resulting in growth. You reach your maximum bone density and strength around age 30, after which bone resorption slowly overtakes bone formation. Osteoporosis develops when there's an abnormal imbalance between bone resorption and formation — that is, resorption occurs too quickly, or formation too slowly.
A torn meniscus is one of the most common knee injuries. Any activity that causes you to forcefully twist or rotate your knee, especially when putting the pressure of your full weight on it, can lead to a torn meniscus. Each of your knees has two menisci — C-shaped pieces of cartilage that act like a cushion between your shinbone and your thighbone. A torn meniscus causes pain, swelling and stiffness. You also might have trouble extending your knee fully. Conservative treatment — such as rest, ice and medication — is sometimes enough to relieve the pain of a torn meniscus and give the injury time to heal on its own. In other cases, however, a torn meniscus requires surgical repair.
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This video, created by Nucleus Medical Media, shows the function of white blood cells in normal immunity. It also portrays how the human immunodeficiency virus (HIV) affects the immune system and causes acquired immunodeficiency syndrome (AIDS). Common types of antiretroviral medications used to treat HIV and AIDS are also shown.
#HIV #AIDS #HumanImmunodeficiencyVirus
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Cholangitis Email this page to a friend Email this page to a friend Facebook Twitter Google+ Cholangitis is an infection of the bile ducts, the tubes that carry bile from the liver to the gallbladder and intestines. Bile is a liquid made by the liver that helps digest food. Causes Cholangitis is most often caused by bacteria. This can occur when the duct is blocked by something, such as a gallstone or tumor. The infection causing this condition may also spread to the liver. Risk factors include a previous history of gallstones, sclerosing cholangitis, HIV, narrowing of the common bile duct, and rarely, travel to countries where you might catch a worm or parasite infection. Symptoms The following symptoms may occur: Pain on the upper right side or upper middle part of the abdomen. It may also be felt in the back or below the right shoulder blade. The pain may come and go and feel sharp, cramp-like, or dull. Fever and chills. Dark urine and clay-colored stools. Nausea and vomiting. Yellowing of the skin (jaundice), which may come and go.
Genital warts are soft growths that appear on the genitals. Genital warts are a sexually transmitted infection (STI) caused by certain strains of the human papillomavirus (HPV). These skin growths can cause pain, discomfort, and itching. They are especially dangerous for women because some types of HPV can also cause cancer of the cervix and vulva.
Cobalamin (vitamin B12) deficiency is particularly common in the elderly (>65 years of age), but is often unrecognized because of its subtle clinical manifestations; although they can be potentially serious, particularly from a neuropsychiatric and hematological perspective.
This video is designed for my introductory A&P course to study the endocrine system. This tutorial will take you through the various endocrine organs, hormones produced, and effects at each tissue. Prolactin is one of the 5 hormones we are studying of the anterior pituitary. SHOW MORE
Esophageal manometry is a test used to measure the function of the lower esophageal sphincter (the valve that prevents reflux of gastric acid into the esophagus) and the muscles of the esophagus (see diagram). This test will tell your doctor if your esophagus is able to move food to your stomach normally.
plantar fasciitis and calcaneal spur can be treated by EPFR with calcanean drilling - endoscopic plantar fascia release علاج الشوكة العظمية للكعب بالمنظار د. أسامة الشاذلي مدرس جراحة العظام واستشاري جراحات و مناظير القدم والكاحل كلية الطب جامعة عين شمس