Compare the speed of the flexion withdrawal reflex to the stretch reflex and the GTR
...
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Slow; b/c it goes through several interneurons in the spinal cord (superficial
dorsal horn) and only uses slow conducting afferents = multi-synaptic path
to motoneurons
How do we supress reciprocal inhibition?
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, Use a different set of interneurons in the spinal cord - suppresses the
default connection, and turn on different sets of interneurons to achieve
this contraction
What is the flexion withdrawal reflex?
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Reflex you are conscious of (hand on stove reflex)
What happens if the corticospinal tract is damaged (stroke, spinal injury)?
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The reflex pattern is switched to flexion withdrawal instead of extensor
thrust (Babinski sign)
Are reflexes innate and genetically determined?
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For the most part, yes; many reflexes are innate and are genetically
determined (eg. knee-jerk reflex)
Can every single reflex in the body be completely supresses (if you no longer want
that function anymore)?
, Give this one a try later!
Yes
Where is the sensory information coming from with respect to the vestibulo-spinal
reflex?
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Otolith organs (ear stones)
What does reflex mean?
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"Bending back" - basic element of motor control
What is bent back is the signal a sensory signal because it all starts with a
specific sensory stimulus which is detected by the sensory receptors -->
this information is carried into the CNS by the sensory afferents and is
quickly processed within the nervous system
(we know that the central nervous system is the integrating center that
evaluates all incoming information and select san appropriate response)
THIS IS OUR INPUT
What is the response of a stretch reflex?
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...
Give this one a try later!
Slow; b/c it goes through several interneurons in the spinal cord (superficial
dorsal horn) and only uses slow conducting afferents = multi-synaptic path
to motoneurons
How do we supress reciprocal inhibition?
Give this one a try later!
, Use a different set of interneurons in the spinal cord - suppresses the
default connection, and turn on different sets of interneurons to achieve
this contraction
What is the flexion withdrawal reflex?
Give this one a try later!
Reflex you are conscious of (hand on stove reflex)
What happens if the corticospinal tract is damaged (stroke, spinal injury)?
Give this one a try later!
The reflex pattern is switched to flexion withdrawal instead of extensor
thrust (Babinski sign)
Are reflexes innate and genetically determined?
Give this one a try later!
For the most part, yes; many reflexes are innate and are genetically
determined (eg. knee-jerk reflex)
Can every single reflex in the body be completely supresses (if you no longer want
that function anymore)?
, Give this one a try later!
Yes
Where is the sensory information coming from with respect to the vestibulo-spinal
reflex?
Give this one a try later!
Otolith organs (ear stones)
What does reflex mean?
Give this one a try later!
"Bending back" - basic element of motor control
What is bent back is the signal a sensory signal because it all starts with a
specific sensory stimulus which is detected by the sensory receptors -->
this information is carried into the CNS by the sensory afferents and is
quickly processed within the nervous system
(we know that the central nervous system is the integrating center that
evaluates all incoming information and select san appropriate response)
THIS IS OUR INPUT
What is the response of a stretch reflex?
Give this one a try later!
