Exercise 9

Malignant neoplasms can originate in nervous tissue or they can invade nervous tissue by direct extension of the tumor. The result can be a variety of conditions and illnesses directly or indirectly related to the nervous system. The names and definitions for three such conditions follow:

Term Definition
neuritis inflammation of a nerve, a condition attended by pain and tenderness over the nerves by anesthesia and paresthesia, paralysis, wasting, and disappearance of the reflexes
neurologic disorder a disease or malfunctioning of the nervous system which might lead to conditions such as abnormal coordination, gait, memory deficit, etc.
myasthenia gravis a syndrome of fatigue and exhaustion of the muscular system marked by progressive paralysis of muscles without sensory disturbance or atrophy, occurring especially in muscles of the face, lips, tongue, throat, and neck

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