Microvascular disease
Disease of the finer blood vessels in the body, including the capillaries. In contrast to macrovascular disease. The microvascular complications of diabetes such as neuropathy can lead to loss of sensation and the development of foot ulcers.
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- Micturition
Urination; the act of urinating.
- Micturition syncope
The temporary loss of consciousness upon urinating. (Syncope is the temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturition syncope) or defecating or coughing or swallowing). The reaction also can be due to the emotional stress of fear […]
- Midbrain aqueduct
The lateral ventricles are in the cerebral hemispheres. Each lateral ventricle consists of a triangular central body and four horns. The lateral ventricles communicate with the third ventricle through what is called the interventricular foramen (opening). The third ventricle is a median (midline) cavity in the brain that is bounded by the thalamus and hypothalamus […]
- Middle ear
A part of the ear that consists of the eardrum (tympanic membrane) and, beyond it, a cavity (tympanum). This cavity is connected to the pharynx (nasopharynx) via a canal known as the Eustachian tube. The middle ear cavity also contains a chain of three little bones, the ossicles (the malleus, incus, and stapes), which connect […]
- Middle ear infection, acute
a bulging eardrum usually accompanied by pain; or a perforated eardrum, often with drainage of purulent material (pus). Otitis media is the most frequent diagnosis in sick children in the U.S., especially affecting infants and preschoolers. Almost all children have one or more bouts of otitis media before age 6. The eustachian tube is shorter […]