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Chapter 10-11

BIOLOGY 2A03 Chapter Notes - Chapter 10-11: Autonomic Nervous System, Lamellar Corpuscle, Sensory Neuron


Department
Biology
Course Code
BIOLOGY 2A03
Professor
Graham R.Scott
Chapter
10-11

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Chapter 10 - Sensory Systems
Sensory Receptors
-                    

-
oBaroreceptors:              

oChemoreceptors: 

oStretch receptors: 
-       specialized endings 
 separate cell!
 
-"sensory unit  
!!
o #
#
          #      
      
receptive eld
- Receptor potential:         

-$%
oSlow & fast adapting
-&          
'
-
o"#

Sensory Systems

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-!!!
 (
-" )

-)
 
-*
+
Sensory Systems – Temperature Receptors
-,-
!
- Thermoreceptors   -        
      -    ./  #  01    !
 nociceptors   )
201
- There are two types of thermoreceptors
o34/#01
o/#41
- Temperature –sensitive “transient receptor potential
(TRP) 
-,    !   

-,!

o566
- Why do chilli peppers feel hot?,78
Sensory Systems – Vision and Photoreceptors
-9)        
photoreceptors,
oRods  dim       

oCones  bright     
colour 
- 3               

-9         rhodopsin
:          ;)  !

o9<;)<
-9' 

o9   reduce ;)      (= 
>
- When light is sensed, it reduces AP frequency
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