Category: M

A disease caused by a meningococcus.  

A condition in which there are signs of meningeal irritation suggesting meningitis, but where there is no pathological change in the cerebrospinal fluid. Symptoms (e.g., stiff neck) that mimic those of meningitis but in which there is no inflammation of the meninges; occurs most often in children. Stiffness of the neck mimicking that found in…

A benign tumour in the meninges. A meningioma is a type of tumor that arises from the meninges, a membrane that covers the brain and spinal column. Meningiomas occur most often in the brain but can also occur along the spinal column. Meningiomas are rare in children; in fact, they account for only 2% of…

A haemorrhage from a meningeal artery.  

A sometimes fatal condition in which acid fluid from the stomach is brought up into the windpipe and passes into the lungs, occurring mainly in obstetric patients [Described 1946. After Curtis L. Mendelson (b. 1913), US obstetrician and gynaecologist.] Inhalation of regurgitated stomach contents, usually as a complication of general anaesthesia. It may cause death…

The laws of heredity, that are the basis of the science of genetics [Described 1865. After Gregor Johann Mendel (1822-84), Austrian Augustinian monk and naturalist of Brno, whose work was rediscovered by de Vries in 1900.] Basic principles of inheritance, developed in the 19th century by the Austrian monk Gregor Mendel on the basis of…

To repair something.  

A series of ducts and canals formed of membrane inside the osseous labyrinth. Network of membranous semicircular ducts, containing the fluid endolymph, that are suspended within the bony semicircular canals of the inner ear and function in the maintenance of balance.  

A bone which develops from tissue and not from cartilage. A bone that develops in connective tissue by direct ossification, without cartilage being formed first. The bones of the face and skull are membrane bones. Bone formed within embryonic fibrous connective tissue, in which fibroblasts differentiate into osteoblasts. Such bone is formed without a cartilage…

The presence of little brown, yellow or black sports on the skin. A skin condition in which blotches of abnormally increased pigmentation appear on the face. In melasma, deposits of brown pigment may be noticed on the forehead, cheeks, or above the upper lip. The condition is referred to as the “mask of pregnancy” during…