Histo. Nerve Endings

Question 1

CT layer, _______ , lies outside the neurolemma

Answer 1

endoneurium

Question 2

Bundle of fibers are surrounded by CT called _______

Answer 2

perineurium

Question 3

where do endoneurium lay?

Answer 3

outside the neurolemma

Question 4

What do perineurium cover?

Answer 4

surrounds bundles of fibers

Question 5

The whole nerve is covered by CT membrane called _____

Answer 5

epineurium

Question 6

_______ are collection of nerve cells outside of the CNS

Answer 6

ganglia

Question 7

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

Answer 7

satellite cells

Question 8

___ gg. are pseudounipolar

Answer 8

spinal gg

Question 9

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

Answer 9

spinal gg

Question 10

Autonomic gg have _______ type of nerve fibers in the gg

Answer 10

all are non-myelinated

Question 11

_______ are the terminations of the nerve cell processes

Answer 11

Nerve endings

Question 12

______ receive sensory impulses and relay them to various centers

Answer 12

Receptors

Question 13

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

Answer 13

exteroceptors

Question 14

*______ receptors are present in the skin

Answer 14

cutaneous receptors

Question 15

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

Answer 15

free nerve endings

Question 16

• _______ nerve endings are found around hair follicles

Answer 16

peritrichial plexus

Question 17

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

Answer 17

Merkels’s tactile corpuscle

Merk is tact-ful

Question 18

_________ are nerve endings found in dermis papillae

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

Answer 18

Meissner’s corpuscles

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

Question 19

_______ are modified Meissner’s corpuscle

Answer 19

Genital corpuscles

Question 20

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

Answer 20

genital corpuscles

Question 21

• ___ corpuscles are temperature receptors for hot stimulus

Answer 21

Ruffini corpuscles

Ruffi’s do not make for a hot night!

Question 22

• _______ nerve ending is sensitive to cold stimuli

Answer 22

Krause’s End Bulb

Question 23

• Name the four nerve endings are are sensity to light touch

Answer 23

1. Peritrichial Plexus
2. Merkel’s tactile corpuscles
3. Meissner’s corpuscles
4. Genital corpuscles

Question 24

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

Answer 24

Proprioceptors

Question 25

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

Answer 25

proprioceptors

Question 26

* Name the three structures that assist with proprioception

Answer 26

1. Pacinian corpuscles 2. Muscle spindles 3. Tendon Spindles

Question 27

* __________ are proprioceptor structures that are sensitive to deep pressure and vibration sense

Answer 27

Pacinian corpuscles

Question 28

Where are proprioceptive pacinian corpuscles found?

Answer 28

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

Question 29

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

Answer 29

Muscle spindles

Question 30

* Name of stretch receptors

Answer 30

Muscle spindles

Question 31

Where are muscle spindles found?

Answer 31

Musculotendinous jxn

Question 32

___ fibers are small muscle fibers in the muscle spindles

Answer 32

Intrafusal fibers

Question 33

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

Answer 33

Muscle spindles: monitor the extent and velocity of the contraction in MUSCLE Tendon spindles : located in tendon. and monitor the TENSION of the muscle

Question 34

Another name for tendon spindles

Answer 34

Golgi tendon organs (GTO)

Question 35

Where are GTO found?

Answer 35

btw the tendon fibers close to its jxn with the muscle

Question 36

* What do GTO do?

Answer 36

Act as a stretch receptor carrying action potential in relation to the tension of the muscle (gTo = TENSION)

Question 37

* What is the fxn of Muscle Spindles?

Answer 37

Act as stretch receptors carrying impulses about the extent & velocity of the CONTRACTION (muscle = contraction)

Question 38

Another name for interoceptors?

Answer 38

Visceroceptors

Question 39

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

Answer 39

Interoceptors - can be stim by chem or mech. stim

Question 40

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

Answer 40

Effectors

Question 41

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

Answer 41

somatic motor, autonomic motor

Question 42

* Somatic motor endings that occur in relation to muscle are called ______

Answer 42

motor end plates

Question 43

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

Answer 43

motor end plates

Question 44

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

Answer 44

synaptic gutter

Question 45

synaptic gutter is _____

Answer 45

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

Question 46

* Somatic nerve endings are in ______ muscle

Answer 46

skeletal

Question 47

*Autonomic motor endings are in ______ muscle

Answer 47

smooth and cardiovascular

Question 48

* The autonomic motor fibers arise from the ____ in the walls of the visceral organs

Answer 48

Autonomic plexus

Question 49

* Motor endings to glands arise from _______

Answer 49

periacinar plexus

Question 50

*_______ endings control the secretory activity of the glands

Answer 50

motor endins to glands

Question 51

Another name for motor endings to glands

Answer 51

secretory endings

Question 52

What are the 4 special sensory receptors of the exteroceptors

Answer 52

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