HK 100 EXAM 2 PURDUE
Nervous system has - Answers :plasticity
plasticity (capacity for change) - Answers :learn (create new pathways)
repair/replace damaged pathways
expand capacity of pathways(able to multitask)
increase rate of transmission in pathways
nervous system uses - Answers :sensation
interpretation
execution
nervous system components - Answers :sensory receptors
motor unit
nerves (neurons) in sensation, interpretation,
execution
synapses
sensory receptors - Answers :eyes, ears, vestibular system
central - Answers :brain & spinal cord
oversees all things in the body
Peripheral Subdivisions - Answers :carries info from sensory receptors to CNS & then
back to muscles
afferent pathways
efferent pathways
afferent - Answers :sensory
ascending
carries inpt from sensory receptors to brain
efferent - Answers :motor
descending
carries output info from brain to muscles
structure of neurons - Answers :cell body
single axon
, many dendrite
myelin
axon - Answers :talkers/sends info away
dendrites - Answers :listeners/gets info
trick to remember structure of neurons - Answers :lots of listening, little talk
myelin - Answers :protective sheath around axon
rate of signal on axon - Answers :1 diameter- thicker, faster
characteristics of neurons - Answers :high metabolic rates
longest living cells in body
irreplaceable
interneurons function - Answers :serves as connecting point between sensory and
motor neurons (2 neurons)
pass along info from outside body or inside body to brain OR process info itself and sent
signal to motor neuron to act
interneurons location - Answers :either brain or spinal cord
synapses - Answers :small gap at the end of a neuron that allows a signal to pass from
one neuron to the next
synapses... where does it do - Answers :happens via action of neurotransmitter
(chemical mediator)
synapses... how does it do - Answers :released from axon terminal (presynaptic)
postsynapses - Answers :depolarization (excitation potential)
-likelihood action potential fires
hyperpolarization (inhibitory potential)
neuromuscular junction - Answers :between motor neuron and muscle fiber
neuromuscular junction image - Answers :
Main types of sensory receptors for movement - Answers :-vision
-proprioception
convert info received to electrical pulses and transmit these along neural pathways
visual systems - Answers :focal and ambient
Nervous system has - Answers :plasticity
plasticity (capacity for change) - Answers :learn (create new pathways)
repair/replace damaged pathways
expand capacity of pathways(able to multitask)
increase rate of transmission in pathways
nervous system uses - Answers :sensation
interpretation
execution
nervous system components - Answers :sensory receptors
motor unit
nerves (neurons) in sensation, interpretation,
execution
synapses
sensory receptors - Answers :eyes, ears, vestibular system
central - Answers :brain & spinal cord
oversees all things in the body
Peripheral Subdivisions - Answers :carries info from sensory receptors to CNS & then
back to muscles
afferent pathways
efferent pathways
afferent - Answers :sensory
ascending
carries inpt from sensory receptors to brain
efferent - Answers :motor
descending
carries output info from brain to muscles
structure of neurons - Answers :cell body
single axon
, many dendrite
myelin
axon - Answers :talkers/sends info away
dendrites - Answers :listeners/gets info
trick to remember structure of neurons - Answers :lots of listening, little talk
myelin - Answers :protective sheath around axon
rate of signal on axon - Answers :1 diameter- thicker, faster
characteristics of neurons - Answers :high metabolic rates
longest living cells in body
irreplaceable
interneurons function - Answers :serves as connecting point between sensory and
motor neurons (2 neurons)
pass along info from outside body or inside body to brain OR process info itself and sent
signal to motor neuron to act
interneurons location - Answers :either brain or spinal cord
synapses - Answers :small gap at the end of a neuron that allows a signal to pass from
one neuron to the next
synapses... where does it do - Answers :happens via action of neurotransmitter
(chemical mediator)
synapses... how does it do - Answers :released from axon terminal (presynaptic)
postsynapses - Answers :depolarization (excitation potential)
-likelihood action potential fires
hyperpolarization (inhibitory potential)
neuromuscular junction - Answers :between motor neuron and muscle fiber
neuromuscular junction image - Answers :
Main types of sensory receptors for movement - Answers :-vision
-proprioception
convert info received to electrical pulses and transmit these along neural pathways
visual systems - Answers :focal and ambient
