Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
What are the three layers of the meninges?
|
Dura mater, arachnoid, pia mater
|
|
Where are the meninges found?
|
In the CNS surrounding the brain and spinal cord
|
|
What type of information is transported through the dorsal root?
|
Sensory
|
|
What type of information is transported through the ventral root?
|
Motor
|
|
How is it possible to predict the results of injuiries to localized areas of the spinal cord?
|
test reflexes to see which are abnormal
|
|
What are the two main types of nerves?
|
motor and sensory
|
|
What is a nerve plexus?
|
complex interwoven network of nerves
|
|
Why are nerve plexus important?
|
they combine sets of spinal nerves that control the same area into one large grouped nerve
|
|
What is a reflex?
|
involuntary(autonomic) motor response to a specific stimulation
|
|
Compare and contrast simple and complex reflexes. Give example of each.
|
Simple- stretch reflex; delivering info from peripheral receptors to cns and motor fibers carrying commands
complex- hand on stove; interneuron between sensory(afferent) and motor (efferent) neuron |
|
What is the role of the autonomic nervous system?
|
controls smooth muscle, cardiac muscle, glands, and adipose
|
|
What are the two divisions of the autonomic nervous system?
|
Parasympathetic and sympathetic
|
|
Compare and contrast the functions of the sympathetic and parasympathetic nervous system.
|
Parasympathetic- converves energy; promotes sedentary activities
Sympathetic- increased muscle tone, metabolic rate, heart rate, alertness; flight or fight response |
|
What anatomical and physiological changes occur in the nervous system as we age?
|
reduction in brain size and weight; reduction in the number or neurons; decrease in blood flow to brain; changes in synaptic organization; intracellular and extracellular changes in the CNS neurons
|
|
Explain the reflex arc.
|
1. arrival of stimulus
2. activation of sensory neuron 3. information processing in CNS 4. activation of motor neuron 5. response by effector |