BM 1041:03 Lecture Notes - Lecture 11: Golgi Tendon Organ, Muscle Spindle, Sensory Cortex
23 May 2018
School
Department
Course
Professor
Describe sensory and motor pathways
Bring info from outside the CNS into the CNS
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Sensory pathways
Pathway
Input begins at receptors in the skin and muscles
1.
Travels through pathways to sensory cortex or cerebellum
2.
Receptors
1.
Simple and complex
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Receptors for general senses in the skin
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L1 - neural pathways 1
Monday, 26 March 2018
1:47 PM
wk 6 Page 1
Screen clipping taken: 26/03/2018 7:13 PM
Muscle spindle - detects length of muscle
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Golgi tendon organ
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Screen clipping taken: 26/03/2018 7:14 PM
Found in
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Proprioceptors
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Specialised nerve endings which monitor and respond to the environment
Sensory receptors
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wk 6 Page 2
Document Summary
Bring info from outside the cns into the cns. Input begins at receptors in the skin and muscles. Travels through pathways to sensory cortex or cerebellum. Specialised nerve endings which monitor and respond to the environment wk 6 page 2. Specialised nerve endings which monitor and respond to the environment. Conversion of energy in the stimulus to an action potential. Better two-point discrimination thresholds depending on part of body e. g. fingers have lower threshold than back ie. more sensitive. Slowly = lessened response initially but has longer duration. Rapid = high response at start, then quickly disappears e. g. think about temperature and entering a cold room. After a while you get used to the temp. Screen clipping taken: 26/03/2018 7:17 pm wk 6 page 3. Depending on myelination and diameter of axon -> conduction velocity can vary. Thicker axon and more myelin = quicker conduction. Screen clipping taken: 26/03/2018 7:19 pm wk 6 page 4.
