Ch 18 Lec 1 - General & Special Senses Flashcards Preview

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Flashcards in Ch 18 Lec 1 - General & Special Senses Deck (62):
0

a specialized cell that sends sensations to CNS

sensory receptor

1

two sensory receptors

tonic, Phasic

2

sensory receptor that is always sending signals to CNS

tonic

3

sensory receptor that becomes active only with changes in the conditions they monitor

Phasic

4

five types of receptors

chemoreceptors, nociceptors, thermoreceptors, mechanoreceptors, photoreceptors

5

area monitored by a single receptor cell

receptive field

6

each receptor responds to a specific stimulus which is called blank

receptor specificity

7

a photoreceptor will not respond to a blank stimulus

chemical

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the sensory information arriving at the CNS

sensation

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conscious awareness of sensation

perception

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blank interprets impulses

brain

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perception is the feeling that occurs when blank impulses are interpreted

sensory

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occurs when sensory receptors are subjected to blank stimulation

continuous

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sensory adaptation results in a reduction of blank

sensitivity

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when sensory receptors decrease their level of activity

peripheral adaptation

15

two receptors of peripheral adaptation

fast adapting, slow adapting

16

sensory adaptation where sensory neurons are still active and CNS causes reduced perception

central adaptation

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sensory information from receptors is blank

incomplete

18

humans do not have blank for every blank

receptor, stimulus

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receptors have limited blank

ranges

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stimulation of a sensory receptor requires a blank event that is interpreted

neural

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these senses do not have specialized receptor cells or sensory organs

general senses

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can have specialized receptor cells separate from the sensory neuron

special senses

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special senses are structurally blank

more complex

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special senses are usually in special blank

organs

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three groups of general senses

exteroceptors, proprioceptors, interoceptors

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general sense group that relays info about external environment

exteroceptors

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general sense group that depict body position in space

proprioception

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these receptors sense tissue damage

nociceptors

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nociceptors perceive blank

pain

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nociceptors are blank nerve endings with large receptive field

free

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nociceptors are found everywhere except blank

brain

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nociceptors provide a blank function

protective

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nociceptors do not blank well

adapt

34

three types of pain

fast, slow, referred

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prickling pain that is quick and induces a reflex and usually ends when stimulus ends

fast pain

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type of pain that is burning and begins later, persists longer, and is achy

slow pain

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type of pain that is visceral pain that feels like it is coming from a more superficial region

referred pain

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example of a referred pain

brain freeze

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referred pain is due to blank structures being innervated by the same blank nerves as the damaged viscera

superficial, spinal

40

pain in left arm before heart attack is blank pain

referred

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receptors that involve heat and cold

thermoreceptors

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thermoreceptors are free nerve endings in blank

skin

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thermoreceptors are blank to adapt

quick

44

hot and cold is detected by blank but pain is detected by blank

thermoreceptors, nociceptors

45

six types of of tactile receptors in these two categories

unencapsulated, encapsulated

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three types of unencapsulated tactile receptors

free nerve endings, root hair, tactile disc

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unencapsulated tactile receptor that is in the papillary of dermis and is for general touch

free nerve endings

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unencapsulated tactile receptor that monitors distoritions and movement across body surface

root hair

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unencapsulated tactile receptor that is an expanded nerve terminal that synapses with Merkel cell and is sensitive to fine touch

tactile disc

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three encapsulated tactile receptors

tactile corpuscles, lamellated corpuscle, ruffini corpuscle

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encapsulated tactile receptor that is found where tactile sensitivities are very well developed

tactile (meissner's) corpuscles

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encapsulated tactile receptor that responds to deep pressure

lamellated (Pacinian) corpuscle

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encapsulated tactile receptor that is in dermis and detects pressure with little adaptation

ruffini corpuscle

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stretch receptors that monitor changes in pressure and detect stretching of tissue walls

baroreceptors

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baroreceptors regulate blank activities

autonomic

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two autonomic activities regulated by baroreceptors

digestive tract, bladder, carotid sinus, lung, colon

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receptors that monitor position of joints, tension in tendons, state of muscle contraction

proprioceptors

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proprioceptors have blank adaptation to stimulus

no

59

two types of proprioceptors

muscle spindles, golgi tendon organ

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muscle spindle proprioceptors monitor blank of muscle

length

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golgi tendon organ proprioceptors monitors blank in a tendon during contraction

tension