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19 Cards in this Set
- Front
- Back
what are the basic components of all human reflex arcs? (in order)
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1. receptor
2. sensory neuron 3. integration center 4. motor neuron 5. effector |
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muscle spindle
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stretch receptor in skeletal muscle
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if you stimulate gama motor fivers and they contract, what does it do to the muscle spindle?
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it desensitizes it
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intrafusal fibers
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stretch when muscle stretches- sensory nerve fiber wrapped around
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deep tendon reflex
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ex. patellar tendon reflex
- golgi tendon organ- sense stretch in tendons - 2 fibers sends info to spinal cord 1. fires on hamstring (contracts) 2. fires on quadricep (relaxes) overrides muscle spindle reflex |
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the crossed extensor reflex
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sensory neuron activity
synapses on interneuron 1 tri, 1 bi inhibits triceps and stimulates biceps on other side it does the opposite |
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visceral reflexes
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ex. fat in intestines- bile release
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where does sympatheric nervous system info travel on the spine?
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T1-L1
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where does parasympathetic info travel?
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CN 3, 7, 9, 10
SN's |
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acetylcholine is released by the __________ nervous system
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parasympathetic
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epinephrine and norepinephrine are released by the _________ n.s.
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sympathetic
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sympathetic nervous system
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fight or flight
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parasympathetic ns
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resting or digesting
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cholinergic receptors
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nicotinic
muscarinic |
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adrenergic receptors
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b1, b2, b3
alpha 1 and 2 |
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why is there referred pain?
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bc visceral and dermatone fibers are fused
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highest heriarchy of motor control
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cerebellum and basal and nuclei
programs and instructions modified by feedback |
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middle hierarchy of motor control
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motor cortex (pyramidal system) and brain stem nucleii
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lowest level of hierarchy of motor control
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spinal cord
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