The video will describe what is sarcoidosis. Please see my website for disclaimer.

A very funny video by Michael Moore showing a brief history of America

DMC Surgeon uses minimally-invasive surgery to remove uterine fibroids to hasten recovery. ~ Detroit Medical Center

Catheterization of the Pulmonary Artery through the internal jugular vein

the video will describe oxyhemoglobin dissociation curve. please see my website for disclaimer.

A video discussing the importance of following up the blood pressure for diabetic patients and the serious complications that they can avoid by this very simple measure.

WORLD'S FIRST TRUE ANATOMIC ZIRCONIA DENTAL IMPLANT SOLUTION dentistry

Bleeding during the ligation of an artery during right hemicolectomy

DMC Podiatrist Dr. Charles Kissel perfoms a bunionectomy to help a woman get back on her feet and back to work ~ Detroit Medical Center

TV Interview with Dr. Mostafa Yakoot, MD about the novel Influenza H1N1 (Swine Flu)
Updates in triage and management.

Laparoscopic Surgery varicocellectomy

Bruce had a stroke 2 years ago. Then, he broke his hip. The stroke affected his right side, and he has had limited mobility and was using a walker for recovery, Bruce could only walk with breaks and was hunched over. The GlideTrak opened Bruce's posture and allowed him to breath better and allowed for over 25 minutes of walking exercise, greatly increasing the Patients self-confidence and at the end he was actually able to stand on his own feet, with the straps as guides, whereas this was not possible before his sessions on the GlideTrak. clean, water-damp cloth. Repeat application procedure as needed.

The video will describe epithelium. Please see disclaimer on my website. www.academyofprofessionals.com

a video showing the technique of Shave and Punch Skin Biopsies nique of

In this video a real case of the extremely rare disease "Fibrodysplasia ossificans progressiva" or what is called the "FOP" This disease is commonly misdiagnosed and usually end up by unnecessary surgery which exaggerate the disease. Children born with FOP characteristically have deformed great toes, possibly missing a joint or simply presenting with a notable lump at the minor joint. The first "flare-up" that leads to the formation of FOP bones usually occurs before the age of 10. FOP is a genetic disease. The bone growth progresses from the top downward, just as bones grow in fetuses. A child with FOP will typically develop bones starting at the neck, then on the shoulders, arms, chest area and finally on the feet. However it does not necessarily occur in this order due to injury-caused flare-ups. Often, the tumor-like lumps that characterize the disease appear suddenly. The gene that causes ossification is normally deactivated after a fetus' bones are formed in the womb, but in patients with FOP, the gene keeps working. Aberrant bone formation in patients with FOP occurs when injured connective tissue or muscle cells at the sites of injury or growth incorrectly express an enzyme for bone repair during apoptosis (self-regulated cell death), resulting in lymphocytes containing excess bone morphogenetic protein 4 (BMP4) provided during the immune system response. Since the incorrect enzyme remains unresolved within the immune response, the body continues providing the incorrect BMP4-containing lymphocytes. BMP4 is a product that contributes to the development of the skeleton in the normal embryo.

An animation illustrating valvular heart surgery

Neurotransmitter 3D Animation
on Tuesday, December 21, 2010




Neurotransmitters are endogenous chemicals which transmit signals from a neuron to a target cell across a synapse. Neurotransmitters are packaged into synaptic vesicles clustered beneath the membrane on the presynaptic side of a synapse, and are released into the synaptic cleft, where they bind to receptors in the membrane on the postsynaptic side of the synapse. Release of neurotransmitters usually follows arrival of an action potential at the synapse, but may also follow graded electrical potentials. Low level "baseline" release also occurs without electrical stimulation. Neurotransmitters are synthesized from plentiful and simple precursors, such as amino acids, which are readily available from the diet and which require only a small number of biosynthetic steps to convert. The chemical identity of neurotransmitters is often difficult to determine experimentally. For example, it is easy using an electron microscope to recognize vesicles on the presynaptic side of a synapse, but it may not be easy to determine directly what chemical is packed into them. The difficulties led to many historical controversies over whether a given chemical was or was not clearly established as a transmitter. In an effort to give some structure to the arguments, neurochemists worked out a set of experimentally tractable rules. According to the prevailing beliefs of the 1960s, a chemical can be classified as a neurotransmitter if it meets the following conditions: * There are precursors and/or synthesis enzymes located in the presynaptic side of the synapse. * The chemical is present in the presynaptic element. * It is available in sufficient quantity in the presynaptic neuron to affect the postsynaptic neuron; * There are postsynaptic receptors and the chemical is able to bind to them. * A biochemical mechanism for inactivation is present. There are many different ways to classify neurotransmitters. Dividing them into amino acids, peptides, and monoamines is sufficient for some classification purposes. Major neurotransmitters: * Amino acids: glutamate, aspartate, D-serine, γ-aminobutyric acid (GABA), glycine * Monoamines and other biogenic amines: dopamine (DA), norepinephrine (noradrenaline; NE, NA), epinephrine (adrenaline), histamine, serotonin (SE, 5-HT), melatonin * Others: acetylcholine (ACh), adenosine, anandamide, nitric oxide, etc. In addition, over 50 neuroactive peptides have been found, and new ones are discovered regularly. Many of these are "co-released" along with a small-molecule transmitter, but in some cases a peptide is the primary transmitter at a synapse. β-endorphin is a relatively well known example of a peptide neurotransmitter; it engages in highly specific interactions with opioid receptors in the central nervous system. Single ions, such as synaptically released zinc, are also considered neurotransmitters by some[by whom?], as are some gaseous molecules such as nitric oxide (NO) and carbon monoxide (CO). These are not classical neurotransmitters by the strictest definition, however, because although they have all been shown experimentally to be released by presynaptic terminals in an activity-dependent way, they are not packaged into vesicles. By far the most prevalent transmitter is glutamate, which is excitatory at well over 90% of the synapses in the human brain. The next most prevalent is GABA, which is inhibitory at more than 90% of the synapses that do not use glutamate. Even though other transmitters are used in far fewer synapses, they may be very important functionally—the great majority of psychoactive drugs exert their effects by altering the actions of some neurotransmitter systems, often acting through transmitters other than glutamate or GABA. Addictive drugs such as cocaine and amphetamine exert their effects primarily on the dop

Squmaous Cell Carcinoma Of Scalp Challenging Cases & Controversial Questions with a focus on Mohs frozen section histology and pathology. Visit us @ www.skincancercentre.com.

Graphic video demonstrating the reconstruction of a facial cheek defect following the removal of a common skin cancer in a challenging location near the lower eyelid. Visit us @ www.skincancercentre.com.

USMLE Step 2 CS - Amenorrhea - This is just preview video. To get full access please visit our website : www.usmletutoring.com