Test 2.1 Flashcards
What does the first order neuron innervate
The peripheral and go into the CNS
True or false
Receptors fields are different for every neuron
True
True or false
The further you go into the numerical system the LARGER the diameter
False
It’s the smaller diameter
True or false
The small the diameter the less energy the neuron needs
True
Explain a slow adapting receptor
The receptor transmits info as you stimulate it (tells you about rate of change)
What does rapid adapting receptors do
It only tells you about change in stimuli (tells you how much pressure you are receiving)
What is the peripheral vision associated with
Rapid adapting receptors
Where are tactical receptors
In your hand
What are pacinian corpuscle
Open mechincally gated sodium channels
What happens during tissue damage
It releases potassium to extra cellular and changes delta Ek and a neighbor cell will reach zero and fine action potential
What is the characteristic of muscle spindle
Is rapid and slow adapting receptors
What is the Golgi tendon
An organ that provides force
What are the three neurons needed to signal to the somatosensation and where are they located
First order neuron- spinal cord or medulla
Second order neuron-thalamus
Third order neuron -cerebral cortex
What is it called when you cross over to the other side of the nervous system
Decussate
What is the only sense that goes through the thalamus
Olfaction (smell)
What happen if you remove a digit in your toes or finger
The neurons of that digit will go to the neighborhood digits
What is the dorsal column system
It’s where axons travel carrying info about discriminative and proprioception
What is the anterolateral system
Carey’s info about crude touch,pain, and temp
What is pain gating
The thing that delongs pain response
In the spinal cord 1-6 is comprised of what?
Comprised of dorsal horn
What is special about 8-9
Are only laminea in ventral horn
What is special about 10
Area around central canal
What is special bout 7
Is btw ventral and dorsal horn that makes up reflex circuits
What is special about 2
It is the dorsal horn
What is it called where axons comes into the dorsal horn
Tract of lissauer
What’s the characteristic of the dorsal column system
High resolution to touch,vibration, and proprioception
When does a first order neuron synapse with a second order neuron
Does not synapse with second order neuron until it reaches medulla
What is epislateral
Sensory info that goes through the spinal cord on the same side
What does the primary sensory neuron do
It innervates a region of tissue
