The sensory nervous system and key sensory receptors Flashcards
LO2 Discuss the sensory nervous system and key sensory receptors
1
Q
What is a MECHANORECEPTOR?
A
A receptor sensitive to stretching and pressure
2
Q
What is a THERMORECEPTOR?
A
Free nerve endings in the skin - that are sensitive to changes in cold or warmth
3
Q
What is a NOCICEPTOR?
A
Free nerve endings through out the body the detect pain 2y to physical, thermal or chemical tissue damage
4
Q
What is an ELECTROCHEMICAL RECEPTOR?
A
Rods and cones - on the eye, sensitive to light
5
Q
What is a CHEMORECEPTOR?
A
Receptors sensitive to chemical changes, e.g. taste, smell, blood gases, CBG
6
Q
What is SPATIAL SUMMATION?
A
Multiple inputs from multiple neurons
7
Q
What is TEMPORAL SUMMATION?
A
The strength of the signal based on the FREQUENCY of impulses
