Ch 23 Neurologic System Flashcards
Broca’s area
In the frontal lobe it mediates motor speech
When injured in the dominant hemisphere, expressive aphasia results (the person cannot talk but can understand language)
Wernicke’s Area
In the temporal lobe is associated with language comprehension.
When damaged in the persons dominant hemisphere, receptive aphasia results. (The person hears sound but it has no meaning)
Dermal segmentation
Is the cutaneous distribution of the various spinal nerves
Dermatome
Is circumscribed skin area that is supplied mainly from spinal cord segment through a particular spinal nerve
- A band or region of skin supplied by a single sensory nerve.
Syncope
A sudden loss of strength, a temporary loss of consciousness (a faint)!due to lack of cerebral blood flow eg low BP
Vertigo
Is the rotational spinning caused by neurologic disease in the vestibular apparatus in the ear or in the vestibular nuclei in the brain stem
Seizures
Occur with epilepsy, a paroxysmal disease characterized by altered or loss of consciousness, involuntary muscle movements and sensory disturbances
Aura
Is a subjective sensation that precedes a seizure; it could be auditory, visual, or motor
Tremor
Is an involuntary shaking, vibrating, or trembling
Paresis
Is a partial or incomplete paralysis
Paralysis
Is a loss of motor function due to lesion in the neurologic or muscular system or loss of sensory innervation
Dysmetria
Is the inability to control range of motion of muscles
Is clumsy movement with overshooting the mark and occurs with cerebellum disorders or acute alcohol intoxication
Paresthesia
Is an abnormal sensation that results from injury to one or more nerves. It is often described by patients as numbness and tingling, or as a prickly, stinging, or burning feeling.
Dysarthria
Difficulty forming words
Dysphasia
is difficultly with language comprehension or expression