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Kin 1131 > PNS and Integration: Sensory Receptors and Sensation > Flashcards

PNS and Integration: Sensory Receptors and Sensation Flashcards

1
Q

Sensory Receptors Structure // Simple: includes 1. _____ _____ _____ of first order sensory neurons witch are used for ____ temperature, ____ some touch.
2. _______ nerve endings of first order sensory neurons . used for ____ _____ some touch

A

Free nerve endings,
pain, itch,
encapsulated
pressure, vibration

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2
Q

Exteroceptors - Location
what they respond to
what information do they provide?

A

Body’s surface
Stimuli from environment
touch, pressure, pain, temp, special senses

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3
Q

Interoceptors -
Location
what they respond to
what information do they provide?

A

deeper in body
internal environment
chemical changes, tissue stretch, temp, pain, hunger thirst, nausea

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4
Q

Proprioceptors -
Location
what they respond to
what information do they provide?

A

skeletal muscles, tendons and joints, ligaments connective tissue
respond to body movements

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5
Q

Free nerve endings have what type of receptors? (L and S)
Location?
capsulated?

A

L:Exteroceptors, Interoceptors, Proprioceptors
S:Thermo,chemo,mechano receptors plus nociceptors
most body tissues
no

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6
Q

Modified free nerve endings: tactile discs (Merkle discs) have what type of receptors? (L and S)
Location?
capsulated?

A

L exteroceptors
Mechanoreceptors S:(light pressure); slowly adapting
basal layer of epidermis
no

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7
Q

hair follicle receptors: have what type of receptors? (L and S)
Location?
capsulated?

A

L:exteroceptors
S: mechanoreceptors (hair deflection); rapidly adapting
in and surrounding hair follicles
no

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8
Q

Messner’s corpuscles (tactile) have what type of receptors? (L and S)
Location?
capsulated?

A

L: Exteroceptors
S: Mechanoreceptors
dermal papillae of hairless skin, external genitalia, fingertips, soles of feet, eyelids

yes

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9
Q

Pacinian corpuscles (lamellated)
have what type of receptors? (L and S)
Location?
capsulated?

A

L: Exteroceptors, interceptors, and some proprioceptors
S: Mechanoreceptors
dermis and hypodermis, periostea, mesentery, tendons, ligaments, joint capsules, abundant in fingers, feet external genitalia and nipples

yes

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10
Q

Ruffini endings have what type of receptors? (L and S)
Location?
capsulated?

A

L: Exteroceptors and proprioceptors
S: Mechanoreceptors
Deep in dermis, hypodermis and joint capsules.

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11
Q

Somatic Sensations are in the ______ system, ______ vagina, anus _____ _____ and tendons + ______

A

integumentary system

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12
Q

transduction is the generation of a _____ _____

A

graded potential

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13
Q

Nerve impulse is the _____ of an ____ _____

A

generation, action, potential

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14
Q

Integration is CNS _______ and _____

A

reception and processing

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15
Q 
Sensory process is? 
1
2
3
4
A

Sensory Receptor stimulation
transduction
nerve impulse
integration

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16
Q

Touch is detected by?

A

Meissner corpuscles

hair root plexus

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17
Q

Touch and pressure is detected by?

A

tactile(merkel) discs (continuous)

Ruffini corpuscles

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18
Q

Meissner corpuscles and hair root plexus are _____ _______ and sense the _____ of touch

A

fast adapting

onset

19
Q

Merkel discs and Ruffini corpuscles are ______ ______ and are activated when there is a more ________and deeper pressure touch that ______the skin

A

slow adapting
continuous
stretches’

20
Q

what does fast adapting means? it adapts to the ______ and becomes used to it. aka not noticing wearing ______

A

sensation

shoes

21
Q

slow adapting / no adapting means there is _____ a change in the _____ of sensory impulses (frequency of action potentials).

A

never,

speed

22
Q

High frequency Vibration is felt by

A

Pacinian Corpuscles

23
Q

Low frequency vibration is felt by

A

Meissner corpuscles

24
Q

itch and tickle is felt by

A

free nerve endings

25
Q

thermoreceptors that sense warmth and cold are felt by?

A

free nerve endings

26
Q

cold receptors are ____ ____ than warmth receptors

A

more abundant

27
Q

Pain is felt by ______

A

nociceptors

28
Q

Types of pain?

A

fast, slow, superficial and deep somatic

visceral pain

29
Q

nociceptors feel pain trough _____ ____ _____

A

free nerve endings.

30
Q

nociceptors are everywhere but the ____

A

brain

31
Q

Kinesthesia is the _____ of ____ movements

A

preception

32
Q

proprioception is _____ your own body parts in _____ and how they are ____

A

recognizing,
space,
moving

33
Q

proprioceptors are?

A

muscle spindles
Golgi tendon organs
Joint kinesthetic receptors

34
Q

are their any muscle fibers receiving stimulus from extrafusal fibers?

A

NO

35
Q

Extrafusal Muscle fibers are : ______ and innervated by ____ ____ neurons

A

contractile

alpha motor

36
Q

Intrafusal Muscle fibers have 2 regions. the central region is ____ ____ and the end region with ___ ____ with is innervated by _____ _____ neurons

A

non-contractile
is contractile
gamma y motor

37
Q

Somatic (spinal) reflexes are ______, ____ both _____ and learned

A

involuntary, rapid

intrinsic

38
Q 
Reflex arc is 
1
2
3
4
5
A 
sensory receptor 
sensory neuron 
integration center 
motor neuron 
effector
39
Q

how does autonomic reflex differ?

A

different effector organs

it has a 2 neuron pathway where somatic has 1.

40
Q

A streatch reflex causes _____ _____ ____ that has been scratched

A

contraction of muscle

41
Q

A stretch reflex causes _____ _____ ____ that has been scratched

A

contraction of muscle

42
Q

give an example of a stretch reflex?

A

knee jerk (tap tendon below patella test)

43
Q

in a tendon reflex the muscle ______ and the tendon _____

A

relaxes

stretches

Kin 1131 (42 decks)

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