A circumscribed change in the color of skin that is neither raised nor depressed. Macules are completely flat and can only be appreciated by visual inspection and not by touch. Physicians refer to flat skin spots on the skin as macules, as opposed to papules.
Small circumscribed changes in the color of skin that are neither raised (elevated) nor depressed. Macules are never large. They are basically little spots or blemishes in the skin. They are entirely flat and can only be appreciated by visual inspection; they cannot be seen from the side. Dermatologists call small flat skin spots on […]
Any pathologic condition or disease of the macula, the small spot in the retina where vision is keenest. Also called macular retinopathy.
- Mad deer disease
See Chronic wasting disease.
- Magendie, foramen of
An opening from the fourth ventricle in the brain to the central canal of the upper end of the spinal cord.
A soft-bodied wormlike larva of a fly that lays its eggs in living or especially in decaying tissues. The living or rotting material furnishes heat for the hatching of the eggs and food for the newly hatched maggots. Certain blowfly maggots — notably, those of the blackbottle fly (Phormia regina) and the greenbottle fly (Phaenicia […]