Physiology 3120 Lecture Notes - Afferent Nerve Fiber, Receptive Field, Myelin

20 views2 pages

Document Summary

Wednesday, october 21, 2009: all rapidly adapting receptors are associated with connective tissue. 6 different touch receptors (therefore touch is a hugely important sensation/stimulus) Some slowly adapting (free nerve ending, merkel"s, ruffini) Can detect vibrations of stimuli (fast adapting receptors) very accurately: free nerve endings part of the sensation of many modalities; different sensation mechanisms between. Touch receptors have axons that conduct signals at about 80m/s; pain receptors (at the fastest) have axons that conduct signals at about 20m/s. May reflect an increased need for tactile sensation in mammals compared with lower-order modalities: touch faster than pain organisms, pain: two types. Slow pain/ache: goes through the c pathway. Fast/sharp pain: goes through alpha-delta pathway: clusters of axons in a nerve: classification by conduction velocity. Alpha conduct signals faster than beta axons; different diameters produce different conduction velocities; larger diameter = faster conduction; all of these fibres are a fibres.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions