Sensory receptors, taste & smell WK6 L2 Flashcards

1
Q

WHAT IS SENSATION?

A

CONSIOUS OR SUBCONCIOUS LEVEL OF AWARENESS OF CHANGES IN ENVIRONMENT

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2
Q

WHERE DOES THE PROCESS OF SENSATION BEGIN?

A

SENSORY RECEPTORS OF SPECIALISED CELLS OR DENDRITES IN SENSORY NEURON

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3
Q

WHAT EVENTS NEED TO TAE PLACE FOR SENSATION TO OCCUR?

A

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

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4
Q

CAN RECEPTORS DETECT MULTIPLE DIFFRENT TYPES OF STIMULUS?

A

NO THEY CAN ONLY PROCESS ONE TYPE OF STIMULUS

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5
Q

WHAT INFORMATION DO RECEPTORS SEND?

A

MODALITY - LOCATION - INTENSITY - DURATION

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6
Q

WHAT IS SENSORY ADAPTATION?

A

WHEN THE SENORS FIRE OFF AND THE ENVIRONMENT STAYS THE SAME SO THE RECEPTORS SHUT OFF

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7
Q

WHAT ARE TONIC RECEPTORS?

A

CONSTANT SIGNAL AS LOGN AS STIMULUS IS APPLIED

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8
Q

WHAT ARE PHASIC RECEPTORS?

A

BURST OF ACTIVITY BUT QUICKLY STOP AFTER FIRING

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9
Q

WHAT ARE CHEMORECPTORS?

A

CHEMICAL RECEPTORS - TASTE

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10
Q

WHAT ARE THERMORECEPTORS?

A

TEMPERATURE RECEPTORS

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11
Q

WHAT ARE MECHANORECPTORS?

A

MECHANICAL CHANGES

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12
Q

WHAT ARE PHOTORECEPTORS?

A

LIGHT RECEPTORS

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13
Q

WHAT ARE OLFACTIONRECEPTORS?

A

SMELL RECEPTORS

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14
Q

WHAT ARE NOCICEPTORS?

A

PAIN RECEPTORS

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15
Q

WHAT ARE INTERORECEPTORS?

A

INTERNAL RECEPTORS

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16
Q

WHAT ARE EXTERORECEPTORS?

A

EXTERNAL RECEPTORS

17
Q

WHAT ARE PROPIORECEPTORS?

A

BODY POSITIONAL AND MOVEMENT RECEPTORS

18
Q

WHAT ARE GENERAL SENCES?

A

WIDELY SPREAD ALL THROUGHOUT BODY

19
Q

WHAT ARE SPECIAL SENSES?

A

VISION - HEARING - SMELL - TASTE - BALANCE

20
Q

WHAT ARE UNENCAPSULATED RECEPTORS?

A

STRUCTURES OF FREE NERVE ENDINGS

21
Q

WHAT ARE EXAMPLES OF UNENCAPSULATED RECEPTORS?

A

NOCICEPTORS - THERMORECEPTORS - TACTILE DISCS - HAIR RECEPTORS

22
Q

WHAT ARE ENCAPSULATED RECEPTORS?

A

SPECIAL CAPSULE WHICH ENCLOSES NERVE ENDING

23
Q

WHAT ARE EXAMPLES OF ENCAPSULATED RECEPTORS?

A

TACTILE CORPUSCES - KRAUSE END BULB - LAMELLATED CORPUSLES - RUFFINI CORPUSCLES

24
Q

WHERE ARE NOCIRECEPTORS FOUND?

A

EVERYWHERE EXCEPT THE BRAIN

25
Q

WHAT IS PAIN FROM SKIN MUSCLES AND JOINTS CALLED?

A

SOMATIC PAIN

26
Q

WHAT IS PAIN FROM THE VISCERA CALLED?

A

VISCERAL PAIN

27
Q

WHICH CHEMICALS STIMULATE PAIN FIBRES?

A

HISTAMINE - BRADYKININ - PROSTAGLANDIN

28
Q

WHAT IS REFERRED PAIN?

A

PAIN PATHWAYS FROM SOMATIC PATHWAYS AREAS ARE USED BY THE VISCERAL REGION

29
Q

HOW DO THE CHEMORECEPTORS GET ACTIVATED?

A

MOLECULES DISSOLVED IN SALIVA

30
Q

WHAT ARE THE TYPES OF SENSATIONS ON THE TOUNGUE?

A

BITTER - SOUR - SWEET - SALTY - UMAMI

31
Q

HOW DO THE OLFACTIONRECEPTORS GET ACTIVATED?

A

FROM INHALING GAS INTO NASAL CAVITY

32
Q

HOW ARE ODOURS PROCESSED?

A

ODOURS CREATE RECEPTOR POTENTIAL - ACTION POTENTIAL TRAVELS TO BRAIN - RECEPTORS ACT UPON SMELL