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PHYL 141 > Ch. 16 - Sensory, Motor, and Integrative Systems > Flashcards

Ch. 16 - Sensory, Motor, and Integrative Systems Flashcards

1
Q

Free nerve endings

A

Classification type: MICROSCOPIC STRUCTURE

Def: bare dendrites assoc. w/ pain, thermal, tickle, itch, and some touch

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2
Q

Encapsulated nerve endings

A

Classification type: MICROSCOPIC STRUCTURE

Def: dendrites enclosed in CT capsule for pressure, vibration and some touch

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3
Q

Separate cells

A

Classification type: MICROSCOPIC STRUCTURE

receptor cells w/ 1st order sensory neurons; loc. in retina (photoreceptors), inner ear (hair cells), and taste buds (gustatory receptor cells)

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4
Q

Exteroceptors

A

Classification type: RECEPTOR LOCATION/ACTIVATING STIMULI

Loc. at or near body surface. Sensitive to external stimuli. Vision, smell, taste, touch, pressure, vibration, thermal, pain.

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5
Q

Interoceptors

A

Classification type: RECEPTOR LOCATION/ACTIVATING STIMULI

Loc. in blood vessels, visceral organs, and nervous system; sensitive to internal envmt; impulses usu. not consciously perceived but can be felt as pain/pressure

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6
Q

Proprioceptors

A

Classification type: RECEPTOR LOCATION/ACTIVATING STIMULI

Loc. in muscles, tendons, joints, and inner ear; Relay info for body posn, muscle length/tension, posn/motion of joints, and balance (equil)

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7
Q

Mechanoreceptors

A

Classification type: STIMULUS TYPE

Detect mech stimuli; Touch, pressure, vibration, proprioception, and hearing/equilibrium; monitor stretch blood vessels and organs

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8
Q

Thermoreceptors

A

Classification type: STIMULUS TYPE

Temperature changes

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9
Q

Nociceptors

A

Classification type: STIMULUS TYPE

Pain from chem or physical damage

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10
Q

Photoreceptors

A

Classification type: STIMULUS TYPE

Light (striking retina)

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11
Q

Chemoreceptors

A

Classification type: STIMULUS TYPE

Detect chemicals in mouth (taste), nose (smell), and body fluids

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12
Q

Osmoreceptors

A

Classification type: STIMULUS TYPE

Detect chems in mouth (taste), nose (smell), and body fluids

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13
Q

Tactile corpuscles

A

Receptor type: TACTILE

Structure/Loc: hairless skin

Sensation: onset of touch, low-freq vibration

Adaptation Rate: Rapid

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14
Q

Hair root plexuses

A

Receptor type: TACTILE

Structure/Loc: free nerve endings wrapped around hair follicles

Sensation: mvmt on skin that disturb hairs

Adaptation Rate: Rapid

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15
Q

Nonencapsulated sensory corpuscles

A

Receptor type: TACTILE

Structure/Loc: free nerve endings, contact tactile epithelial cells in epidermis

Sensation: continuous touch, pressure

Adaptation Rate: slow

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16
Q

Bulbous corpuscles

A

Receptor type: TACTILE

Structure/Loc: elongated capsule surrounding nerve ending; deep in dermis, ligaments and tendons

Sensation: skin stretch and pressure

Adaptation Rate: slow

17
Q

Lamellar corpuscles

A

Receptor type: TACTILE

Structure/Loc: oval capsule surrounds nerve ending; in dermis and subQ tissue, submucosal tissue, joints, periosteum, and some viscera

Sensation: Hi-freq vibration

Adaptation Rate: rapid

18
Q

Itch and tickle receptors

A

Receptor type: TACTILE

Structure/Loc: free nerve endings in skin and mucous membranes

Sensation: itch and tickle

Adaptation Rate: slow and rapid

19
Q

Warm and cold receptors

A

Receptor type: THERMORECEPTOR

Structure/Loc: free nerve endings in skin and mucous membranes (mouth, vagina, anus)

Sensation: warm/cold

Adaptation Rate: first rapid then slow

20
Q

Nociceptors

A

Receptor type: PAIN

Structure/Loc: free nerve endings in every tissue except brain

Sensation: pain

Adaptation Rate: slow

21
Q

Muscle Spindles

A

Receptor type: PROPRIOCEPTOR

Structure/Loc: sensory nerve endings around intrafusal muscle fibers in most skel. muscles

Sensation: muscle length

Adaptation Rate: slow

22
Q

Tendon organs

A

Receptor type: PROPRIOCEPTOR

Structure/Loc: capsule encloses collagen fibers and sensory nerve endings at junction of tendon and muscle

Sensation: muscle tension

Adaptation Rate: slow

23
Q

Joint Kinesthetic Receptors

A

Receptor type: PROPRIOCEPTOR

Structure/Loc: Lamellar corpuscles, bulbous corpuscles, tendon organs, and free nerve endings

Sensation: Joint posn and mvmt

Adaptation Rate: rapid

PHYL 141 (3 decks)

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