308 Final Red Flashcards
Part of the brain or skull missing
Anencephaly
brain and meninges. refers to a herniation or protrusion of various amounts of brain and meninges through a defect in the skull, resulting in a saclike structure
Encephalocele
Meninges only! It is a cystlike dilation of the meninges protrucing through a defect in the posterior arch of the vertebra. A type of Spina Bifida
Meningocele
Meninges, spinal cord, spinal fluid. More severe than meningocele.
Myelomeningocele
Disorder of movement, muscle tone, or posture that is caused by injury or abnormal development in the immature brain, before, during, or after birth
Cerebral Palsy
Causes of CP include:
impaired implantation, chromosomal abnormalities, infection, trauma, radiation exposure, asphyxia, and toxic substances.
Disorder accompanied by systemic nonmotor and neurologic symptoms. MAIN FEATURE: degeneration of the basal ganglia (corpus striatum) involving dopaminergic nigrostriatal pathway.
Parkinson’s Disease
Parkinson’s Classic Motor Symptoms:
he stated either not enough dopamine or damage to dopamine receptors
resting tremors, bradykinesia/akinesia, rigidity, postural abnormalities. ALONE OR IN COMBO. As disease progresses, all four are present. Autonomic dysfunction and cognitive-affective symptoms*
Clinical Manifestations: initial onset can be subtle with cramping or weakness that affects a limb, incoordination, slurring of speech, difficulty swallowing.
ALS (Lou Gehrig’s Disease)
Pathophysiology: Autoimmune, upper and lower motor neuron degeneration (neurons of the cerebral cortex, brainstem, and spinal cord)
ALS (Lou Gehrig’s Disease)
Lower motor neuron syndrome of flaccid paresis:
ALS- weakness of individual muscles, progressing to paralysis, associated with hypotonia and primary muscle atrophy.
Autoimmune and destroys neuromuscular junction receptors.
Pathophysiology: defect in nerve impulse transmission at the neuromuscular junction. Acetylcholine receptor antibodies block the acetylcholine receptor and inhibit the stimulating effect of acetylcholine on the postsynaptic membrane
Myasthenia Gravis
Clinical Manifestations Include: drooping eyelid (ptosis), weakness and fatigue of muscles of the eyes and the throat, causing diplopia, difficulty chewing, talking, and swallowing.
Myasthenia Gravis
Triggers to Migraine Headaches include:
altered sleep, missed meals, overexertion, weather change, stress or relaxation from stress, hormonal changes, excess afferent stimulation (bright lights and strongs smells) and chemicals (nitrates and alcohol).
Name and describe the 2 classes of Migraine Headaches.
- Migraine with Aura: at least some of the attacks are temporarily associated with distinct aura symptoms suggestive of focal brain dysfunction (flashing lights, visual loss)
- Migraine without aura: no associated focal neurologic symptoms. One sided.
Vertebral defect that allows the protrusion of the neural tube contents
Spina Bifida
2 types of Spina Bifida
Meningocele and Myelomeningocele (both occur during the first 4 weeks of pregnancy when the neural tube fails to close completely)
Progressive failure of the cerebral (cognitive) functions not caused by an impaired level of consciousness.
-includes impairment of intelect, decrease in orienting memory, language, alterations.
Dementia
Greatest risk factor for Dementia is _____.
Age
Dementia Classifications
1. Cortical ____________
2. Subcortical ________
Cortical and subcortical _________
- Cortical (Alzheimer’s)
- Subcortical (Parkinson’s)
Cortical and subcortical (Infectious and Creutzfeidt-Jacob)
Pathophysiology of Dementia
Neurodegeneration
Atherosclerosis
Trauma
Compression
Patho of Delirium
acute state of brain dysfunction associated with right middle temporal gyrus or left temporo occipital junction disruption
Differences in clinical manifestations with Delirium and Dementia…
Delirium last hours to days vs years with dementia
_enlargement of the lateral and third ventricles and the widening of the frontocortical fissures and the sulci
_genetic predisposition (new info implicates copy # variables in genes
_brain dopamine pathways are altered
_underactivation of glutamate receptors.
SCHIZOphrenia