Sensory Physiology

Question 0

Temperature

Answer 0

Thermoreceptors

Question 1

Touch

Answer 1

Mechanoreceptors

Question 2

Pain

Answer 2

Nociceptor

Question 3

Electromagnetic Receptors

Answer 3

Light

Question 4

Chemoreceptors

Answer 4

O2 and CO2

Question 5

Specific sensation, specific RECEPTORS

Answer 5

Differential Sensitivity

Question 6

Specific sensation, specific PATHWAYS

Answer 6

Labeled Line Principle

Question 7

Chang in a way a receptor responds to sequential or prolonged stimulation

Answer 7

Adaptation

Question 8

Detects STEADY stimulus

Answer 8

Slowly adapting receptors (Tonic Receptor)

Question 9

Detects ONSET & OFFSET of stimulus

Answer 9

Rapidly adapting receptors (Phasic Receptors)

Question 10

SMALLER receptive field with WELL-DEFINED BORDER

Answer 10

Type 1

Question 11

WIDER receptive field with POORLY-DEFINED BORDERS

Answer 11

Type 2

Question 12

Non-hairy skin (fingers & lips)
Movement of objects
Low frequency vibration

Answer 12

Meissner’s Corpuscles

Question 13

Iggo Dome Receptors

Steady state signals for continuous touch

Answer 13

Merkel’s Disc

Question 14

In deep skin, internal tissue and joint capsules
Slow-adapting
Heavy and prolonged touch

Answer 14

Ruffini’s End Organ

Question 15

Onion-like structure in skin and deep fascia

Detects high-frequency vibration

Answer 15

Pacinian Corpuscles

Question 16

Cell Body: Dorsal Root or Cranial Nerves

Answer 16

First-Order Neurons

Question 17

Cell Body: Spinal Cord or Brainstem

Answer 17

Second-Order Neurons

Question 18

Cell Body: Thalamus

Answer 18

Third-Order Neurons

Question 19

Cell Body: Sensory Cortex

Answer 19

Fourth-Order Neuron

Question 20

Maintains the shape of the eye

Answer 20

Intraocular Fluid

Question 21

Contraindicated in Glaucoma causes Mydriasis, blocks the canal of Schlemn

Answer 21

Atropin

Question 22

Area of central vision with slight thickening and pale color

Answer 22

Macula Densa

Question 23

Highest Conde density

Answer 23

Fovea

Question 24

Anatomic Blind Spot

Answer 24

Optic Disk

Question 25

Absent in Optic Disk

Answer 25

Rods and cons

Question 26

Interneuron that CONNECTS Rods and Cones with Ganglia Cells.

Contrast Detectors

Answer 26

Bipolor Cells

Question 27

Interneurons that form local circuits with Bipolor Cells

Answer 27

Amacrine Cells, Horizontal Cells

Question 28

Retinal Glial Cells

Maintains internal geometry of the retina

Answer 28

Mueller Cells

Question 29

Light rays converge in FRONT of the retina (long eyeball)

Answer 29

Myopia

Tx: Biconcave lense

Question 30

Irregular curvature of the cornea

Answer 30

Astigmatism

Tx: Cylindrical lense

Question 31

Age-related loss of accomodation

Answer 31

Presbyopia (conVEX)

Question 32

First sign of Vitamin A Deficienty

Answer 32

Nyctalopia

Question 33

Ptosis, Meiosis, and Anhydrosis

Answer 33

Horner’s Syndrome

Question 34

Speed of Sound

Answer 34

335m/sec in air

Question 35

What is the age-related progressive sensorineural hearing loss?

Answer 35

Presbycusis

Question 36

Occupational Hearing Loss (OHL) occurs after >100yrs exposure to which sound pressure?

Answer 36

> 85 dB

Question 37

What sound pressure will cause pain and possible permanent damage?

Answer 37

> 120 dB

Question 38

What is the function of the pinna?

Answer 38

Sound localization and sound collection

Question 39

What are the two muscles found in the middle ear?

Answer 39

Tensor Tympani (MALLEUS)
Stapedius (STAPES)

Question 40

What sound pressure will cause pain and possible permanent damage?

Answer 40

> 120dB

Question 41

What is the connection between outer and middle ear?

Answer 41

Eustachian Tube (equalizes pressure difference)