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T1- Histology Midterm2 > Histo. Nerve Endings > Flashcards

Histo. Nerve Endings Flashcards

*** Stared the words that were highlighted in flow chart

1
Q

CT layer, _______ , lies outside the neurolemma

A

endoneurium

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2
Q

Bundle of fibers are surrounded by CT called _______

A

perineurium

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3
Q

where do endoneurium lay?

A

outside the neurolemma

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4
Q

What do perineurium cover?

A

surrounds bundles of fibers

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5
Q

The whole nerve is covered by CT membrane called _____

A

epineurium

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6
Q

_______ are collection of nerve cells outside of the CNS

A

ganglia

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7
Q

______ cells surround each gg cell by a layer of flat cells with flat nuclei

A

satellite cells

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8
Q

___ gg. are pseudounipolar

A

spinal gg

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9
Q

_______ gg. are few in number relative to size of gg.

A

spinal gg

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10
Q

Autonomic gg have _______ type of nerve fibers in the gg

A

all are non-myelinated

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11
Q

_______ are the terminations of the nerve cell processes

A

Nerve endings

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12
Q

______ receive sensory impulses and relay them to various centers

A

Receptors

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13
Q
  • _______ : receptors close to the body surface and receive impulses that originate from outside the body
A

exteroceptors

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14
Q

*______ receptors are present in the skin

A

cutaneous receptors

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15
Q
  • ______ nerve endings are sensitive to pain, light touch, and temperature
A

free nerve endings

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16
Q
  • _______ nerve endings are found around hair follicles
A

peritrichial plexus

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17
Q

*_______ is a naked nerve terminal that penetrates the epithelial cells to expand around the tactile cell

A

Merkels’s tactile corpuscle

Merk is tact-ful

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18
Q

_________ are nerve endings found in dermis papillae

- in the fingertips, toes, lips, nipples and genitals

A

Meissner’s corpuscles

more broad then genital corpuscles
(It is just a Meiss when you get the toes and lips involved)

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19
Q

_______ are modified Meissner’s corpuscle

A

Genital corpuscles

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20
Q

*_______ are found around glans penis, clitoris, and labia minora

A

genital corpuscles

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21
Q
  • ___ corpuscles are temperature receptors for hot stimulus
A

Ruffini corpuscles

Ruffi’s do not make for a hot night!

22
Q
  • _______ nerve ending is sensitive to cold stimuli
A

Krause’s End Bulb

23
Q
  • Name the four nerve endings are are sensity to light touch
A
  1. Peritrichial Plexus
  2. Merkel’s tactile corpuscles
  3. Meissner’s corpuscles
  4. Genital corpuscles
24
Q

______ are receptors that are located in body walls and receive impulses from inside the body

A

Proprioceptors

25
Q

_______ are receptors that receive impulses in relation to the musculoskeletal system

A

proprioceptors

26
Q
  • Name the three structures that assist with proprioception
A
  1. Pacinian corpuscles
  2. Muscle spindles
  3. Tendon Spindles
27
Q
  • __________ are proprioceptor structures that are sensitive to deep pressure and vibration sense
A

Pacinian corpuscles

28
Q

Where are proprioceptive pacinian corpuscles found?

A
  1. deep in skin
  2. subcut. tis.
  3. tendons
  4. lig.
  5. Muscles
29
Q

_________ acts as a stretch receptor. It carries impulses about the extend and velocity of a contraction

A

Muscle spindles

30
Q
  • Name of stretch receptors
A

Muscle spindles

31
Q

Where are muscle spindles found?

A

Musculotendinous jxn

32
Q

___ fibers are small muscle fibers in the muscle spindles

A

Intrafusal fibers

33
Q

What is the main difference btw muscle spindles vs. Tendon spingles

A

Muscle spindles: monitor the extent and velocity of the contraction in MUSCLE

Tendon spindles : located in tendon. and monitor the TENSION of the muscle

34
Q

Another name for tendon spindles

A

Golgi tendon organs (GTO)

35
Q

Where are GTO found?

A

btw the tendon fibers close to its jxn with the muscle

36
Q
  • What do GTO do?
A

Act as a stretch receptor carrying action potential in relation to the tension of the muscle

(gTo = TENSION)

37
Q
  • What is the fxn of Muscle Spindles?
A

Act as stretch receptors carrying impulses about the extent & velocity of the CONTRACTION

(muscle = contraction)

38
Q

Another name for interoceptors?

A

Visceroceptors

39
Q

____________ are located in the mucous mem. & adventitia of visceral organs & blood vessels

A

Interoceptors

  • can be stim by chem or mech. stim
40
Q

*_______ are nerve endings that relay motor impulses from the CNS to the end organ

41
Q

Motor endings of effector nerve endings can be ______ motor or ______ motor

A

somatic motor, autonomic motor

42
Q
  • Somatic motor endings that occur in relation to muscle are called ______
A

motor end plates

43
Q

________ is where the motor terminal of * somatic motor endings make contact with skeletal fibers

A

motor end plates

44
Q

The groove into which a bulbous ending of a somatic nerve dips into the sarcolemma

A

synaptic gutter

45
Q

synaptic gutter is _____

A

The groove in the sarcolemma that a somatic motor ending dips into

46
Q
  • Somatic nerve endings are in ______ muscle
47
Q

*Autonomic motor endings are in ______ muscle

A

smooth and cardiovascular

48
Q
  • The autonomic motor fibers arise from the ____ in the walls of the visceral organs
A

Autonomic plexus

49
Q
  • Motor endings to glands arise from _______
A

periacinar plexus

50
Q

*_______ endings control the secretory activity of the glands

A

motor endins to glands

51
Q

Another name for motor endings to glands

A

secretory endings

52
Q

What are the 4 special sensory receptors of the exteroceptors

A
  1. taste
  2. olfactory
  3. auditory
  4. visual receptors (rods and cones)

T1- Histology Midterm2 (6 decks)

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