Category: M

A nerve that supplies both muscles and skin of a body area.  

Black spots seen floating before the eyes usually due to the presence of opaque specks in the vitreous humor.  

The conversion of dead tissue into a hard shrunken mass, chiefly by dehydration. Dry gangrene, also known as the shrinking or withering of a deceased fetus within the womb.  

Lenses in which the power of the lower part gradually increases toward the lower edge. There is no dividing line on the lens as there is between the upper and lower segments of bifocal lenses. The wearer can see clearly at any distance by lowering or raising his eyes to look through an appropriate part…

A genus of mold fungi commonly seen on dead and decaying organic matter. They can be pathogenic in man, causing infections of the skin and respiratory system. A genus of mold found in dead and decaying matter. Some species can cause infections of external ear, skin, and respiratory passageways.  

The region of the cerebral cortex that is responsible for initiating nerve impulses that bring about voluntary activity in the muscles of the body. It is possible to map out the cortex to show which of its areas is responsible for which particular part of the body. The motor cortex of the left cerebral hemisphere…

The term is usually used as part of the medical name of a specific disease. Morbus, the Latin word for disease, is used in such terms as morbus cordis (heart disease), morbus coxae (hip-joint disease).  

An iodine-containing substance produced in the thyroid gland from which the thyroid hormones are derived. An amino acid intermediate in the synthesis of thyroxine and triiodothyronine.  

A person who is completely color-blind. There are two types. The rod monochromat appears to have totally defective cones: he has very poor visual acuity as well as the inability to discriminate colors. The cone monochromat has normal visual acuity: his cones appear to respond normally to light but to be completely unable to discriminate…

The changing of the shape of an infant’s head during labor, brought about by the pressures to which it is subjected when passing through the birth passage. Shaping of the fetal head to adapt itself to the dimensions of the birth canal during its descent through the pelvis.