Test 4 Flashcards
Agnosia
Loss of ability to recognize objects, or a particular sensory system; may be visual, auditory or tactile
Ataxia
Inability to coordinate muscle movements, resulting in difficulty and walking talking and performing self-care activities
Autonomic nervous system
Division of the nervous system that regulates the involuntary body functions
Axon
Portion of the neuron that conducts impulses away from the cell body
Babinski reflex
A reflex action of the toes; in adults is indicative of abnormalities in the motor control pathway leading from the cerebral cortex
Clonus
Abnormal movement marked by alternating contraction and relaxation of a muscle occurring in rapid succession
Delirium
An acute confused state that begins with disorientation, and if not recognized and treated early, can progressed to changes in level of consciousness, irreversible brain damage, and sometimes death
Dendrite
Portion of the neuron that conducts impulses towards the cell body
Flaccidity
Displaying lack of muscle tone; limp floppy
Parasympathetic nervous system
Division of the auto Tomic nervous system active primarily during non-stressful conditions, controlling, mostly visceral functions
Position sense
Awareness of position of parts of the body without looking at them
Reflex
An automatic response to stimuli
Rigidity
Increase in muscle tone at rest, characterized by increased resistance to passive stretch
Romberg test
Test for cerebellar dysfunction that can be done with the patient seated or standing; inability to maintain position for 20 seconds is a positive test
Spasticity
Sustained increase in tension of a muscle, when it is, passively lengthened, or stretched
Sympathetic nervous system
Division of the automatic nervous system, with predominantly, excitatory responses; the flight or fight system
Vertigo
Illusion of movement, in which the individual are, the surroundings are sensed as moving
Akinetic mutism
Unresponsiveness to the environment; the patient makes no movement or sound, but sometimes opens the eyes
Altered level of consciousness
When a patient is not oriented, does not follow commands or needs persistent stimuli to achieve a state of alertness
Brain death
Irreversible loss of all functional Pantaya brain, including the brain stem 
Coma
Prolonged state of unconsciousness
Craniectomy
A surgical procedure, that involves removal of a portion of the skull
Craniotomy
A surgical procedure that involves entry into the cranial vault
Cushing’s response
The brains attempt to restore blood flow by increasing arterial pressure to overcoming increased, intercranial pressure; Cushing’s reflex