Category: A

Folds of the arachnoid layer of the cranial meninges that project through the inner layer of dura mater into the superior sagittal sinus and other venous sinuses of the brain. Through them, cerebrospinal fluid reenters the bloodstream.  

The surgical establishment of a connector between the axillary artery and the common femoral arteries. A synthetic artery graft is used and implanted subcutaneously. This technique is used in treating patients with insufficient blood flow to the legs (peripheral vascular disease).  

A graft in which vascular infiltration does not occur.  

A graft taken from another part of the patient’s body.  

A graft from a genetically nonidentical donor of the same species as the recipient.  

A gradient of physiological or metabolic activity exhibited by embryos and many adult animals, the principal one of which follows the main axis of the body, being highest at the anterior end and lowest at the posterior end.  

In sensitometry, a measure of the contrast of the film or film screen system by determination of the slope of the sensitometric curve. The quantification of the extent or sharpness of the linear segment within the H&D curve, specifically between 0.25 and 2.00, is performed to determine its measurement.  

A gradient. The difference between the calculated oxygen pressure available in the alveolus and the arterial oxygen tension. It measures the efficiency of gas exchange.  

One of the two anterior pituitary hormones that affects the ovaries or testes: follicle-stimulating hormone and luteinizing hormone.  

A goiter caused by the growth of an encapsulated adenoma.