Nervous System Flashcards
1
Q
What is the nervous system made up of?
A
- CNS
- PNS
2
Q
What does the CNS include?
A
Spinal cord & brain
3
Q
What does the PNS include?
A
- Autonomic nervous system
- Somatic nervous system
4
Q
Propioceptors
A
Enables us to respond to the space around us and react to changing circumstances
5
Q
Mechanoreceptors
A
- Located in the skin
- Respond to mechanical stimuli from physical interaction
6
Q
Sensitivity
A
Trait characterised by increased awareness to environmental situation
7
Q
Photopic vision
A
Daylight, cones sensitivity high, rods saturated
8
Q
Scotopic vision
A
Nightlight, rods sensitivity high, cones low
9
Q
Mesopic vision
A
Intermediate light intensity, output of cones + rods combined
10
Q
Sensory threshold
A
The weakest stimulus that a sensory organ sense
11
Q
Raising the perceptual threshold of a sensory organ means…
A
Lowering the sensitivity
12
Q
Lowering the threshold means…
A
Increased sensitivity
13
Q
Sensory adaptation
A
- Decrease in sensitivity to a constant level of stimulation
- Occurs at the sensory sites
14
Q
Habituation
A
- Decrease in behavioural response after repeated exposure to a stimulus
- Occurs at the SNS
