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Neurotransmission
Neurotransmission samer kareem 1,455 Views • 2 years ago

Ca2+ binds with the membrane of the synaptic vesicles, which causes the vesicles to break and release the neurotransmitter into the synaptic cleft. After the neurotransmitters are released, they diffuse across the synaptic cleft and interact with receptors on the postsynaptic membrane. When the action potential reaches the presynaptic terminal, it provokes the release of a small quantity of neurotransmitter molecules, which bind to chemical receptor molecules located in the membrane of another neuron, the postsynaptic neuron, on the opposite side of the synaptic cleft.

Sectioned Heart
Sectioned Heart samer kareem 8,815 Views • 2 years ago

Sectioned Heart

How a wisdom tooth is removed
How a wisdom tooth is removed samer kareem 7,745 Views • 2 years ago

A wisdom tooth or third molar is one of the three molars per quadrant of the human dentition. It is the most posterior of the three. Wisdom teeth generally erupt between the ages of 17

Portal Hypertension
Portal Hypertension samer kareem 9,187 Views • 2 years ago

Portal hypertension is an increase in the blood pressure within a system of veins called the portal venous system. Veins coming from the stomach, intestine, spleen, and pancreas merge into the portal vein, which then branches into smaller vessels and travels through the liver.

APGAR Test
APGAR Test samer kareem 20,488 Views • 2 years ago

Although the Apgar score was developed in 1952 by an anesthesiologist named Virginia Apgar, you also might hear it referred to as an acronym for: Appearance, Pulse, Grimace, Activity, and Respiration. The Apgar test is usually given to a baby twice: once at 1 minute after birth, and again at 5 minutes after birth.

Cardiovascular System
Cardiovascular System samer kareem 7,823 Views • 2 years ago

The heart, blood vessels, and blood are the parts that make up the circulatory system, which is defined as a closed system of blood vessels for the transport of gasses and nutrients. The heart is the key organ in the circulatory system. As a hollow, muscular pump, its main function is to propel blood throughout the body.

Ganglion Cyst Surgical Removal
Ganglion Cyst Surgical Removal samer kareem 17,011 Views • 2 years ago

Ganglion Cyst Surgical Removal

Medical Terminology
Medical Terminology samer kareem 5,428 Views • 2 years ago

Medical Terminology

Cell Cycle
Cell Cycle samer kareem 35,749 Views • 2 years ago

The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells.

What is diabetes? How does diabetes affect the body?
What is diabetes? How does diabetes affect the body? samer kareem 20,823 Views • 2 years ago

a disease in which the body’s ability to produce or respond to the hormone insulin is impaired, resulting in abnormal metabolism of carbohydrates and elevated levels of glucose in the blood and urine.

How Much Force Does It Take To Break A Bone?
How Much Force Does It Take To Break A Bone? samer kareem 5,280 Views • 2 years ago

Force Does It Take To Break A Bone

Zollinger-Ellison Syndrome
Zollinger-Ellison Syndrome samer kareem 10,499 Views • 2 years ago

Experts do not know the exact cause of Zollinger-Ellison syndrome. About 25 to 30 percent of gastrinomas are caused by an inherited genetic disorder called multiple endocrine neoplasia type 1 (MEN1). MEN1 causes hormone-releasing tumors in the endocrine glands and the duodenum.

Intussusception of the Bowel video - Animation by Cal Shipley, M.D.
Intussusception of the Bowel video - Animation by Cal Shipley, M.D. samer kareem 7,833 Views • 2 years ago

In cases when the presentation is unclear, ultrasonography is the imaging methodology of choice. The characteristic finding is the presence of a "target sign". Ultrasonography is not required in patients with obvious clinical diagnosis (as seen in this patient). Such patients can proceed directly to treatment with diagnostic and therapeutic air (pneumatic) or water-soluble (hydrostatic contrast) enema.

Diaper Rash
Diaper Rash samer kareem 5,305 Views • 2 years ago

-The management of diaper rash includes frequent changing of diapers, avoiding tight-fitting diapers, exposing the skin to air, using diapers with super absorbent surfaces, and applying barrier creams such as zinc oxide or petrolatum.

Nasogastric Intubation Into Brain
Nasogastric Intubation Into Brain samer kareem 10,729 Views • 2 years ago

This was a Nasogastric Intubation that went very wrong. The tube went up into the brain, causing severe damage, instead of going down through the throat.

Osler Weber Rendu
Osler Weber Rendu samer kareem 4,209 Views • 2 years ago

-Osler-Rendu-Weber syndrome is characterized by multiple telangiectasias and vascular lesions of the CNS.

First Aid: Defibrillator
First Aid: Defibrillator samer kareem 6,443 Views • 2 years ago

Defibrillation is a treatment for life-threatening cardiac dysrhythmias, specifically ventricular fibrillation (VF) and non-perfusing ventricular tachycardia (VT). A defibrillator delivers a dose of electric current (often called a countershock) to the heart.

Multiple Vaginal Orgasms
Multiple Vaginal Orgasms samer kareem 3,736 Views • 2 years ago

To learn how to give multiple vaginal orgasms

Doctor makes magic
Doctor makes magic samer kareem 5,567 Views • 2 years ago

Doctor makes magic - Doctor hace magia (Sorprendente) - Doctor Magic

Treating Scoliosis with Magnets
Treating Scoliosis with Magnets samer kareem 17,998 Views • 2 years ago

Pediatric orthopedic surgeons at Columbia are using a new device with magnetic technology that avoids the need for multiple spine-lengthening surgeries to correct early-onset scoliosis, a severe curvature of the spine in young children. In April 2014, Michael Vitale, MD, the Ana Lucia Professor of Pediatric Orthopedic Surgery at CUMC and 1995 graduate of P&S, performed the first procedure in the New York area, using the device to treat a 5-year-old boy. When braces and casts cannot control scoliosis in young children, surgeons turn to growing rods, which help correct the curve while allowing the spine to grow. When spinal maturity is near, the rods are removed and a spinal fusion can be performed. But during years of treatment with growing rods, patients must undergo surgery every six months to lengthen the rods to keep up with the patients’ growth. A patient may undergo eight to 10 procedures, which are costly and result in lost time for parents at work and children at school. The new device—MAGEC (MAGnetic Expansion Control) rods—contains a mechanism inside the growing rods that allows surgeons to lengthen the rods with a handheld external magnet, without surgery.

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