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;
5 Cards in this Set
- Front
- Back
|
Which is FALSE reagrding Alpha-gamma co-activation: * The firing rate of the efferent neurons remains constant *Alpha motor neurons fire onto skeletal muscle * Extrafusal fibres contract * Central region of muscle spindle does not slacken |
Firing rate of efferent neuron remains constant Correct: afferent |
|
|
What is TRUE regarding endogenous opiates: * Slow transmission of pain from site of injury * Cause a decrease in substance P from secondary sensory neurons *Endorphin produced from a precursor in the hypothalamus * All/ non of the above |
Endorphin produced from a precursor in the hypothalamus (Blocks substance P from 1st order neurons) |
|
|
What occurs is the retina when there is light * Increased neurotransmitter release from photoreceptors * Inhibitory glutamate receptors are suppressed * Excitatory glutamate receptors are activated * More signals sent to the brain via light-off bipolar cells * Non of the above |
Increased neurotransmitter release from photoreceptors |
|
|
What best describes the gate control theory *Simultaneous stimuli from A-beta and C fibres enhance pain perception * C fibres activate inhibitory interneuron to suppress pain pathway * A-beta fibres synapse on the inhibitory interneuron to decreases its activity * All/ non of the above |
All False *Simultaneous stimuli will decrease painful stimulus * C fibres inhibit the inhibitory interneuron * A-beta fibres increase inhibitory interneuron activity |
|
|
What describes both the golgi tendon and muscle spindle? * Both are classified as proprioception * Both respond to muscle stretch * Both are innervated by gamma motor neurons * Both are monosynaptic reflexes * Non of the above |
Both are classified as proprioception |
