New to Meducation?
Sign up
Already signed up? Log In

Category

Preview
4
59

3D MRI Visualization Technique Spots Whether Tumor Cells Are Dying from Chemo |

Modern chemo treatment for liver tumors requires monitoring how the therapy is affecting the tumors. This is typically done by measuring the size of the tu  
medgadget.com
over 5 years ago
Preview
0
2

Stem cell scientist 'guilty of misconduct' - BBC News

A Japanese committee investigating problems with a supposedly groundbreaking stem cell study has found the lead researcher guilty of scientific misconduct.  
BBC News
over 5 years ago
Preview
2
40

Lung Cancer

When we talk about lung cancer, we are generally referring to tumour of the bronchus. 95% of lung cancers are carcinoma of the bronchus 2% are alveolar tumours 3% are benign or less invasive malignant tumours. Death normally occurs after 30 ‘cell doublings’ of malignant cells. In this document I will be referring to bronchial carcinoma unless otherwise stated    
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
2
50

Psoriasis

Pathology Keratinocyte hyperproliferation: differentiation, or ‘skin cell going from basal layer to horny layer’, reduced from 4 weeks to 4 days [approximately!] Histopathological features: Parakeratosis: retained nuclei Acanthosis: thick epidermis Absent granular layer Lengthened rete ridges Thin dermal papillae  
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
4
55

Basic Physiology of Metabolism

Only 1% of pancreatic tissue is endocrine. This tissue is found in the Islets of langerhans. Surrounding the islets are adipose tissue deposits. The older you get, the more adipose tissue you have. There are four types of cell in the islets of langerhans, alpha, beta, delta and F. Alpha and beta secreted substances involved with control of glucose, delta and F cells control the level of action of the gastrointestinal tract.     
almostadoctor.com - free medical student revision notes
over 5 years ago
700x466x800px hematopoiesis simple svg.png.pagespeed.ic.jhvzg3stth
7
738

Haematopoiesis - Blood Cell Formation

All blood cells develop from haemocytoblasts The process is called haematopoiesis (sometimes just haemopoiesis) Haemocytoblasts are also known as pluripotential stem cells. These cells can replicate themselves as well as differentiate into other cells, thus providing the constant supply of blood cells. The turnover of cells is very quick:  
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
1
5

Comparison and Summary of White Cell Disease

 
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
3
125

Alcoholic Hepatitis

This is a very common cause of liver injury. It is caused by excessive alcohol intake. Typically there will be steatosis of the liver. In this pathological change, fat globules begin to accumulate in the cytoplasm of liver cells. this can be pretty harmless, and as a result, is not very specific for predicting if the liver will develop cirrhosis.  
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
4
56

Basic Gastric Physiology

There are basically two regions in the stomach, which contain two different lots of cells, which have different functions: Oxyntic glandular area – this contains oxyntic (parietal cells) that secrete gastric juice and intrinsic factor, as well as chief (peptic cells) that secrete pepsinogen Antral (lower) region – this contains G cells that secrete gastrin. G cells are also found in the duodenum.  
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
1
31

Potassium

The Basics 98% is intracellular Serum range 3.5 – 5 mmol/L K+ and H+ tend to vary together Most body secretion is in urine – from distal tubules   Shifts K+ INSIDE cells: Insulin Aldosterone β-adrenergic stimulation  
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
1
41

Goodpasture’s syndrome (anti-GBM antibody disease)

  This is a rare, genetic, autoimmune condition characterised by a combination of glomerulonephritis with alveolar hemorrhage in the presence of circulating anti-glomerular basement membrane (GBM) antibodies.  Circulating anti-GBM antibodies bind to basement membranes in the kidneys and lungs, fix complement and trigger a cell-mediated inflammatory response, causing glomerulonephritis and pulmonary capillaritis.    Specific predisposing factors include the following: Association with HLA-DR2  
almostadoctor.com - free medical student revision notes
over 5 years ago
Preview
7
166

Visual Processing in the Retina

In this episode, I talk about the visual processing that happens in the retina, starting with the rods and cones, going to the bipolar cells and then the ganglion cells. Watch to learn how this process works.  
YouTube
over 5 years ago
Preview
7
183

The Receptive Field of a Ganglion Cell

In this episode, I talk about receptive field of ganglion cells, showing how rods and cones are connected to bipolar cells that are then connected to Ganglion cells.  
YouTube
over 5 years ago
Preview
1
7

Can the damaged brain repair itself?

After a traumatic brain injury, it sometimes happens that the brain can repair itself, building new brain cells to replace damaged ones. But the repair doesn't happen quickly enough to allow recovery from degenerative conditions like motor neuron disease (also known as Lou Gehrig's disease or ALS). Siddharthan Chandran walks through some new techniques using special stem cells that could allow the damaged brain to rebuild faster.  
ted.com
over 5 years ago
Preview
6
151

Siddharthan Chandran: Can the damaged brain repair itself?

After a traumatic brain injury, it sometimes happens that the brain can repair itself, building new brain cells to replace damaged ones.  
YouTube
over 5 years ago
Preview
1
23

Physiology Tutorial - Blood Flow

The task of maintaining an adequate interstitial homeostasis (the proper nutritional environment surrounding all cells in your body) requires that blood flows almost continuously through each of the millions of capillaries in the body. The following is a brief description of the parameters that govern flow through a given vessel. All bloods vessels have certain lengths (L) and internal radii (r) through which blood flows when the pressure in the inlet and outlet are unequal (Pi and Po respectively); in other words there is a pressure difference (ΔP) between the vessel ends, which supplies the driving force for flow. Because friction develops between moving blood and the stationary vessels walls, this fluid movement has a given resistance (vascular), which is the measure of how difficult it is to move blood through a vessel. One can then describe a relative relationship between vascular flow, the pressure difference, and resistance (i.e., the basic flow equation):  
vhlab.umn.edu
over 5 years ago
Preview
1
22

Hi-tech goggles 'detect cancer cells' - BBC News

A US trial of hi-tech goggles could reduce the need for secondary operations for cancer patients.  
BBC News
over 5 years ago
Preview
4
91

B Lymphocytes (B cells)

Overview of B cells (B lymphocytes) and how they are activated and produce antibodies More free lessons at: http://www.khanacademy.org/video?v=Z36dUduOk1Y  
YouTube
over 5 years ago
Preview
1
12

Stem cells cloned from human adults may lead to patient-specific medical treatment

A team of scientists have used cloning methods to produce stem cells from the skin cells of adult patients. To do this, researchers extracted DNA from the cells of two adult males, aged 35 and 75....  
The Verge
over 5 years ago
Www.bmj
1
28

Discrepancies in autologous bone marrow stem cell trials and enhancement of ejection fraction (DAMASCENE): weighted regression and meta-analysis

Objective To investigate whether discrepancies in trials of use of bone marrow stem cells in patients with heart disease account for the variation in reported effect size in improvement of left ventricular function.  
www.bmj.com
over 5 years ago