nervous system Flashcards
what’s the basic structural unit of the nervous system?
neuron
whats the tree layers of meninges?
dura mater, arachnoid mater, pia mater
whats the function of the meninges?
surround neuraxis and are protective tissue
what are the two functions of cerebrospinal fluid?
- provide pathway for removal of metabolites from brain extracellular fluid into venous
- maintain normal internal pressure
paraplegia?
impairment in motor/sensory functions of the lower extremities, damage to Nervin in the body
Encephalitis?
Inflammation of the brain, often due to infection
Hyporocephalus
A buildup of fluid in the cavities deep within the brain
Neuralgia
Intermittent pain along course of nerve, specially in head and face
Cerebrovascular accident
Damage to brain from interruption of blood supply
Epilepsy?
Nerve cell activity in the brain is disturbed causing seizures
Cerebral palsy
Congenital disorder of movement, muscle tone, posture
Parkinson’s disease?
Disorder of the central nervous system that affects movement, often including tremors
Amyotrophic lateral sclerosis
Weakness in muscles and impact physical function
What does the peripheral nervous system consists of
Consists of nerves, Automic nervous system
What does the somatic nervous system consists of
12 pairs of cranial nerves and 31 pairs of spinal nerves
What does the sympathetic nervous system have to do with heart rate
Increases it
What does the sympathetic nervous system have to do with respiration
Increases it
What does the sympathetic nervous system have to do with blood pressure
Increase it
What does the sympathetic nervous system have to do with digestive activity
Decrease it
What does parasympathetic nervous system have to do with heart rate
Decrease it
What does parasympathetic nervous system have to do with respiration
Decreases it
What is homeostasis?
Property of assistive are verbals regulate so that conditions remain stable and relatively consistent
What’s the basic unit of Communication in the nervous system
Neurons
Why are neurons insulated
Your insulated because it protects them and allow signals to move faster without it signals from the brain wouldn’t reach the brain
Explain a synapse and it’s relation to a neurotransmitter
It’s a space that electrical signals is converted into chemical signals
whats an axon?
caries info away from cell body
whats a cell body?
Biosynthetic center of neuron
whats a nerve cell?
basic unit of communication/carries messages
where dose cerebrospinal fluid circulate?
in the brains ventricles
whats the function of CSF?
fills hallow spaces called ventricles
what would happen if you had cerebrospinal fluid?
brain would crush under its own weight without it
what are the meninges?
dura, arachnoid, pia
cerebrum?
controls conscious through thinking
frontal?
voluntary muscles and judgment
parietal?
sensory functions
occipital?
vision
temporal?
hearing, emotion, memory, smell
cerebellum?
controls balance and coordination
diencephalon?
no
whats the fuction of the spinal cord ?
carries msg between CNS and body
