Category: M

A descending pathway of axons that conveys motor impulses from the brain to the lower portions of the spinal cord.  

Placement of a 4 mm (about l/6th of an inch) cannula through an incision made through the cricothyroid membrane into the trachea. This is done using local anesthesia. This type of tracheostomy is especially useful in removing sputum retained in the tracheobronchial tree.  

A tooth soft in structure, white in color, and especially prone to decay.  

A magenta-colored tongue seen in cases of riboflavin deficiency.  

The state of slight contraction usually present in muscles that contributes to posture and coordination; the ability of a muscle to resist a force for a considerable period without change in length.  

The jellylike connective tissue of the umbilical cord.  

Aggregates of T and B lymphocytes found in all mucous membranes, a line of defense against infection. Examples include Peyer’s patches in the small intestine and lymph nodules in the colon, trachea, and bronchi. MALT contains CD4+ and CD8+ T cells and activated B cells and may occasionally undergo malignant transformation into lymphomas. The acronym…

The time required for half of a population to die after exposure to ionizing radiation.  

A curdled milk tumor in the female breast caused by obstruction in a lactiferous duct.  

Thrombosis due to wasting diseases.