Sensory Systems Flashcards

1
Q

Touch

A

Physical pressure; light and heavy pressure, pain, temperature; frequency; corpuscles, free nerve endings; Usually 1; Mechanical to action potential; area specific; sensory cell

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2
Q

Taste

A

Chemical; 4 major, acid, salt, sweet, bitter; concentration dependent to saturation; taste buds; 2; conductance (H or Cl) or receptor based. NT release AP in second nerve; tongue; saturation

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3
Q

Olfactory

A

Volitile chemical; specific and general receptors; concentration dependent to saturation; cilia projections from nerve; 1; receptor based; paired nasal passages; saturation

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4
Q

Hearing

A

Air pressure; pitch, wave frequency; loudness, wave amplitude; hair cells; 2; 1. Air pressure 2. Mechanical 3. Hydraulic 4. Physical 5. K current 6. NT release 7. AP in second nerve; paired, opposite sides; hair cell damage or secondarily

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5
Q

Balance

A

Gravity, orientation; down, angular rotation; NA; hair cells; 2; 1. Mechanical 2. Hydraulic 3. Physical 4. K current 5. NT release 6. AP in second nerve; paired opposite sides; must match visual input

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6
Q

Vision

A

Electromagnetic waves, photons; color, wave frequency; photon number; rods and cones 3 basic colors; many; 1. Photon 2. Photopigments activate phosophodiesterase to cGMP to GMP 3. Na Channels close 4. NT release stops 5. Next cell layer depolarizes transmitted to next layers; paired; sceondarily

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7
Q

Qualities to Look For

A

Modality, Quality, Intensity, Cell Type, Cell Number, Waveform Changes, Location, Adaptaion

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