Sensory receptors, taste & smell WK6 L2 Flashcards
WHAT IS SENSATION?
CONSIOUS OR SUBCONCIOUS LEVEL OF AWARENESS OF CHANGES IN ENVIRONMENT
WHERE DOES THE PROCESS OF SENSATION BEGIN?
SENSORY RECEPTORS OF SPECIALISED CELLS OR DENDRITES IN SENSORY NEURON
WHAT EVENTS NEED TO TAE PLACE FOR SENSATION TO OCCUR?
STIMULUS OCCURED IN RECEPTIVE FIELD - SENSORY RECEPTOR CONVERTS STIMULUS TO RECEPTOR POTENTIAL - GRADED POTENTIAL REACHES THRESHOLD AND ACTION POTENTIAL TRIGGERED - INTEGRATION OF SENSORY INPUT TAKES PLACE IN CNS
CAN RECEPTORS DETECT MULTIPLE DIFFRENT TYPES OF STIMULUS?
NO THEY CAN ONLY PROCESS ONE TYPE OF STIMULUS
WHAT INFORMATION DO RECEPTORS SEND?
MODALITY - LOCATION - INTENSITY - DURATION
WHAT IS SENSORY ADAPTATION?
WHEN THE SENORS FIRE OFF AND THE ENVIRONMENT STAYS THE SAME SO THE RECEPTORS SHUT OFF
WHAT ARE TONIC RECEPTORS?
CONSTANT SIGNAL AS LOGN AS STIMULUS IS APPLIED
WHAT ARE PHASIC RECEPTORS?
BURST OF ACTIVITY BUT QUICKLY STOP AFTER FIRING
WHAT ARE CHEMORECPTORS?
CHEMICAL RECEPTORS - TASTE
WHAT ARE THERMORECEPTORS?
TEMPERATURE RECEPTORS
WHAT ARE MECHANORECPTORS?
MECHANICAL CHANGES
WHAT ARE PHOTORECEPTORS?
LIGHT RECEPTORS
WHAT ARE OLFACTIONRECEPTORS?
SMELL RECEPTORS
WHAT ARE NOCICEPTORS?
PAIN RECEPTORS
WHAT ARE INTERORECEPTORS?
INTERNAL RECEPTORS