Nervous System Flashcards
Sensory System.
Hear, Taste, Smell, See, Touch.
The Nervous System.
Made up of Central nervous system and peripheral nervous system.
Central Nervous System.
Body’s master control unit.
Made up of spinal chord and brain.
Peripheral nervous system.
Body’s link to outside world.
Made up of the automatic nervous system and somatic nervous system
The Automatic Nervous System.
Regulates involuntary bodily processes.
Made up of Sympathetic nervous system and parasympathetic nervous system.
Proprioceptors.
Signals coming from our moving bodies that enable us to respond to the space around and react rapidly in changing circumstances. Unreliable in flight.
Mechanoreceptors.
Located in the skin, respond to mechanical stimuli that result from physical interaction, like pressure, vibration or other tension.
Sensitivity.
Biologically based trait characterized by increased awareness to environmental situation.
Photopic vision.
Daylight, cones sensitivity high, rods saturated.
Scotopic vision.
Nightlight, rods sensitivity high, cones sensitivity low.
Mesopic Vision.
Intermediate light intensity, Cones and Rods Outputs combined
Sensory threshold.
Weakest stimulus that a sensory organ can sense.
Raising the threshold means lowering the sensitivity and visa versa.
Fatigue - raises thresh hold, lower sensitivity, dangerous.
Sensory adaption.
Decrease in sensitivity due to constant level of stimulation.
Habituation.
Decrease in behavioural response after repeated exposure to stimulus. Occurs at CNS.
