Top videos

Pill/Emergency Contraception Work
Pill/Emergency Contraception Work samer kareem 5,545 Views • 2 years ago

Emergency Contraception is a way to prevent pregnancy AFTER unprotected sex. Lots of people have questions about it: What does the morning after pill do? How does emergency contraception work to prevent pregnancy? What are the different types of emergency contraception? This video answers these questions and more.

HIV Virus Life Cycle and Drug Reaction
HIV Virus Life Cycle and Drug Reaction Magdy 11,456 Views • 2 years ago

Binding and Fusion: HIV begins its life cycle
when it binds to a CD4 receptor and one of two
co-receptors on the surface of a CD4+
Tlymphocyte. The virus then fuses with the host
cell. After fusion, the virus releases RNA, its
genetic material, into the host cell.

Reverse Transcription: An HIV enzyme
called reverse transcriptase converts the singlestranded HIV RNA to double-stranded HIV DNA.

Integration: The newly formed HIV DNA
enters the host cell's nucleus, where an HIV
enzyme called integrase "hides" the HIV DNA
within the host cell's own DNA. The integrated
HIV DNA is called provirus. The provirus may
remain inactive for several years, producing few or
no new copies of HIV

Transcription: When the host cell receives a
signal to become active, the provirus uses a host
enzyme called RNA polymerase to create copies of
the HIV genomic material, as well as shorter
strands of RNA called messenger RNA (mRNA).
The mRNA is used as a blueprint to make long
chains of HIV proteins.

Assembly: An HIV enzyme called protease cuts
the long chains of HIV proteins into smaller
individual proteins. As the smaller HIV proteins
come together with copies of HIV's RNA genetic
material, a new virus particle is assembled.

Budding: The newly assembled virus pushes out
("buds") from the host cell. During budding, the new
virus steals part of the cell's outer envelope. This
envelope, which acts as a covering, is studded with
protein/sugar combinations called HIV
glycoproteins. These HIV glycoproteins are
necessary for the virus to bind CD4 and coreceptors. The new copies of HIV can now move
on to infect other cells.

Reduction of Inferior Shoulder Dislocation
Reduction of Inferior Shoulder Dislocation samer kareem 15,356 Views • 2 years ago

A technique for reducing an inferior shoulder dislocation. watch to learn more

The baby who didnt know he was born
The baby who didnt know he was born samer kareem 4,967 Views • 2 years ago

Mysterious things happen in nature, and extraordinary birth delivery facts amaze and astound us. And "The baby who didn't know he was born" is one of them; the reason was because his mother didn't break water, so the little one thought was still in the womb. Of course, the amniotic sac was later broken by the doctor, and as soon as this happened the baby began to breath and cry.

STOP SMOKING
STOP SMOKING DrPhil 10,602 Views • 2 years ago

STOP SMOKING

How does the brain work?
How does the brain work? samer kareem 1,418 Views • 2 years ago

The brain is the most complex organ in our body. It controls everything we do, from simple things such as breathing, to complex things such as co-ordinating our movements. The brain stores our memories, allows us to think and speak, and controls how we behave

Vascular dementia
Vascular dementia samer kareem 1,735 Views • 2 years ago

Vascular dementia is a general term describing problems with reasoning, planning, judgment, memory and other thought processes caused by brain damage from impaired blood flow to your brain. You can develop vascular dementia after a stroke blocks an artery in your brain, but strokes don't always cause vascular dementia. Whether a stroke affects your thinking and reasoning depends on your stroke's severity and location. Vascular dementia also can result from other conditions that damage blood vessels and reduce circulation, depriving your brain of vital oxygen and nutrients

Chemotherapy
Chemotherapy samer kareem 2,390 Views • 2 years ago

Chemotherapy (often abbreviated to chemo and sometimes CTX or CTx) is a category of cancer treatment that uses chemical substances, especially one or more anti-cancer drugs (chemotherapeutic agents) that are given as part of a standardized chemotherapy regimen.

Spinal Injury Animation
Spinal Injury Animation samer kareem 9,093 Views • 2 years ago

An estimated 12,500 spinal cord injuries occur in the U.S. every year, leaving the injured people, their friends, and their family, to cope with the aftermath of the catastrophe. For many, navigating the challenges of the health care system can feel a bit like going to medical school. Suddenly you're learning a veritable cornucopia of new terms, and may be spending endless hours Googling spinal cord anatomy to fill in the gaps in your knowledge. An educated patient is better equipped to advocate for his or her needs and interests. An education in spinal cord anatomy helps you understand what your doctor is saying, ask intelligent questions, and detect medical errors before they endanger your health.

 Heart Surgery
Heart Surgery ThailandMedical Tourism 11,162 Views • 2 years ago

Heart surgery in Thailand is world class and affordable.

Removing a 20-CM Long Loa Loa Worm from the Eye
Removing a 20-CM Long Loa Loa Worm from the Eye Scott 4,411 Views • 2 years ago

Loa loa filariasis (also known as loiasis, loaiasis, Calabar swellings, Fugitive swelling, Tropical swelling and African eyeworm) is a skin and eye disease caused by the nematode worm, loa loa. Humans contract this disease through the bite of a Deer fly or Mango fly (Chrysops spp), the vectors for Loa loa. The adult Loa loa filarial worm migrates throughout the subcutaneous tissues of humans, occasionally crossing into subconjunctival tissues of the eye where it can be easily observed. Loa loa does not normally affect one's vision but can be painful when moving about the eyeball or across the bridge of the nose.The disease can cause red itchy swellings below the skin called "Calabar swellings". The disease is treated with the drug diethylcarbamazine (DEC), and when appropriate, surgical methods may be employed to remove adult worms from the conjunctiva.

Taking Dental Impressions: Correction Impression
Taking Dental Impressions: Correction Impression samer kareem 1,385 Views • 2 years ago

A short introduction on how to take a correction impression. The shown materials are recommended by Orthorobot and have proven to be fully compatible with the Orthorobot lab procedure.

Posterior Urethral Strictures Associated with Urinary Incontinence after Prostatectomy Management
Posterior Urethral Strictures Associated with Urinary Incontinence after Prostatectomy Management Scott Stevens 9,926 Views • 2 years ago

Posterior Urethral Strictures Associated with Urinary Incontinence after Prostatectomy Management

Specialist Gynecomastia Surgeon Clinic in South Delhi,India
Specialist Gynecomastia Surgeon Clinic in South Delhi,India Gynecomastia India 2,090 Views • 2 years ago

Get the best treatment and the best cost for Gynecomastia Surgery in India at KAS Medical Center. Gynecomastia Surgery is done by an experienced cosmetic surgeon Dr. Ajaya Kashyap. For more details visit: www.bestgynecomastiaindia.com FB page: https://www.facebook.com/bestgynecomastiaindia Consult our experts ring us up at +91-9958221983 Please Send Your Query: info@bestgynecomastiaindia.com

Aggressive face squamous cell cancer
Aggressive face squamous cell cancer Magdy 3,208 Views • 2 years ago


Man had to have aggressive removal of Squamous Cell Carcinoma which resulted in the loss of a large portion of his face.

Labor and Birth HD Video
Labor and Birth HD Video Harvard_Student 56,294 Views • 2 years ago

Labor and Birth HD Video

Wound-closure new technologies
Wound-closure new technologies samer kareem 12,711 Views • 2 years ago

Wound-closure technologies are becoming less painful and more efficient at closing wounds.

Multiple Endocrine Neoplasia (MEN 2B)
Multiple Endocrine Neoplasia (MEN 2B) samer kareem 1,724 Views • 2 years ago

Multiple endocrine neoplasia type 2 (MEN2) is a hereditary condition associated with three primary types of tumors: medullary thyroid cancer, parathyroid tumors, and pheochromocytoma. MEN2 is classified into three subtypes based on clinical features. MEN2A, which affects 60% to 90% of MEN2 families Medullary thyroid cancer: 98% to 100% with MEN2A are affected Pheochromocytoma, a typically benign (noncancerous) tumor of the adrenal glands: 50% with MEN2A affected Parathyroid adenoma (benign tumor) or hyperplasia, meaning increased size, of the parathyroid gland: 5% to 10% with MEN2A affected MEN2B, which affects 5% of MEN2 families Medullary thyroid cancer: 98% to 100% with MEN2B affected Pheochromocytoma: 50% with MEN2B affected Mucosal neuromas, which is a benign tumor of nerve tissue on the tongue, lips and throughout the gastrointestinal tract: 95% to 98% affected Digestive problems caused by disordered nerves in the gastrointestinal tract: 75% to 90% affected Muscle, joint, and spinal problems: 95% affected Typical facial features, including swollen lips and thick eyelids: 75% to 90% affected Familial medullary thyroid cancer (FMTC), which affects 5% to 35% of MEN2 families Medullary thyroid carcinoma only Sources: Gagel RF, Marx SJ. “Multiple endocrine neoplasia.” Williams Textbook of Endocrinology, Chapter 40, 11th ed., Philadelphia, 2008, and Eng C, Clayton D, et al. Grubbs EG, Gagel RF. My, How Things Have Changed in Multiple Endocrine Neoplasia Type 2A! J Clin Endocrinol Metab 100(7):2532-5, 7/2015. PMID: 26151398. What causes MEN2? MEN2 is a genetic condition. This means that the cancer risk and other features of MEN2 can be passed from generation to generation in a family. The gene associated with MEN2 is called RET. A mutation (alteration) in the RET gene gives a person an increased risk of developing medullary thyroid cancer and other tumors associated with MEN2.

Plastic Surgery in Boca Live Results
Plastic Surgery in Boca Live Results Arthur Handal 1,434 Views • 2 years ago

This video was taken 4 days after the surgery. This Patient had a facial rejuvenation procedure performed by Dr. Handal. He was exceptionally pleased with the results. Contact us for a consultation on how our team can help you to look better, (561) 912-9888. https://www.handalplasticsurgery.com

Leg Ulcers
Leg Ulcers samer kareem 1,924 Views • 2 years ago

A leg ulcer is simply a break in the skin of the leg, which allows air and bacteria to get into the underlying tissue. This is usually caused by an injury, often a minor one that breaks the skin. In most people such an injury will heal up without difficulty within a week or two. However, when there is an underlying problem the skin does not heal and the area of breakdown can increase in size. This is a chronic leg ulcer.

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