week 11

Question 1

Where are touch receptors?

Answer 1

Embedded in outer layer(epidermis) and underlying (dermis) skin

Question 2

Three criteria of touch receptors?

Answer 2

• types of stimulation to which the receptor
• size of the receptive field
• rate of adaptation

Question 3

Mechanical stimulation such as pressure, vibration or movement is called

Answer 3

mechanoreceptor

Question 4

What are slow adapting mechanoreceptors good for?

Answer 4

Perceiving pattern,
texture
shape

Question 5

Explain the brain pathway for tactile information?

Answer 5

mechanoreceptors transduce mechanical force by which hair cells in the cochlea transduce movement of their stereo-cilia into the neural signal

Question 5

What are fast adapting mechanoreceptors good for?

Answer 5

Perceiving slip and maintaining grip control

• numerous of tactile receptors
• speed and direction

Question 6

What is touch physiology?

Answer 6

Knowing the position and the movement of the limbs

Question 7

How finely can we resolve temporal details?

Answer 7

two tactile pulses can be deleted over time such as
touch
vision
audition

Question 8

Spatial resolution of touch: two point threshold in regards to assessing spatial resolution?

Answer 8

Threshold smaller on fingertips and lips and larger on arms, legs, and torso

Question 9

What is the importance of muscle receptors?

Answer 9

kinaesthetic

Question 10

What is Nociception?

Answer 10

intent of distinguishing between detection of a noxious or potentially harmful event

Question 11

What is the definition of pain?

Answer 11

Unpleasant sensory and emotional experience associated with actual or potential tissue damage

Question 12

What is nociceptors?

Answer 12

Sensory receptors that transduce the physical stimuli (damange, heat, chemical) in the epidermis and dermis

Question 13

What is Sensitisation?

Answer 13

Mechanism that decreases the response threshold of nociceptors

Question 14

What are A-delta Fibres?

Answer 14

militated axons of nociceptors that transmit pain signals relatively rapidly to produce a rapid response

Question 15

What are C-Fibers?

Answer 15

Unmylinated axons of nociceptors that transmit pain signals

Question 16

What are the two pain signals to the spinal cord?

Answer 16

Myelinated

Unmylinated

Question 17

Warm fibres and cold fibres use ____ Receptors?

Answer 17

Thermoreception

Question 18

Warm fibre range?

Answer 18

23 - 40

Question 19

Cold fibre range

Answer 19

10 - 20

Question 20

If skin temperatures is abruptly warmed from sustained neutral temperature then:

Answer 20

the firing rate of warm fibres increased

Question 21

If skin temperatures is abruptly cooled from sustained neutral temperature then:

Answer 21

the firing rate of cold fibres increases

Question 22

What is touch sensation represented by ?

Answer 22

somatotopically in the brain

Question 23

What is the benefits of pain adaptive sensation?

Answer 23

sensing danger

protect to live

Question 24

What is the phantom limb?

Answer 24

sensation perceived from a physically amputated limb of the body
expecting something that isn’t there

Question 25

What is the vestibular system uncharge of ?

Answer 25

Perceiving balance and acceleration

info provided from canals and otolith organs