Neruo Section 6- Part 3

Question 1

What is energy in the stimulus is converted to electrical/chemical signals?

Answer 1

Transduction

Question 2

What is specificity of the sensor for a stimulus?

Answer 2

Modality

Question 3

What are specific nerve fibers that only transmit 1 modality of sensation to 1 specific part of the brain?

Answer 3

Labeled-line principle

Question 4

Energy produced in the receptor may be much greater than th energy contained in a weak stimulus?

Answer 4

Amplification

Question 5

Reduced sensitivity to a continuous stimulus?

Answer 5

Adaptation

Question 6

What has the greatest impulses per second?

Answer 6

Joint capsule receptors

Question 7

What has the lowest impulses per second?

Answer 7

Pacinian corpuscle

Question 8

What receptors are the perception of temperature is associated with 3 types of sensory nerve fibers?

Answer 8

Thermoreceptors

Question 9

What receptor type are pain, warm and cold fibers an example of?

Answer 9

Thermoreceptors

Question 10

What temperatures are pain fibers stimulated by?

Answer 10

Below 15C or 59F
Above 45C or 113F

Question 11

What are meissner, merkel, pacinian corpuscle, hair follicle sensor, and ruffini corpuscle examples of?

Answer 11

Mechanoreceptors

Question 12

What are slow and fast adapting receptors?

Answer 12

Mechanoreceptors

Question 13

What receptors are composed primarily of free nerve endings?

Answer 13

Viscerosensory receptors

Question 14

What are activated by noxious stimuli?

Answer 14

Nociceptors

Question 15

What is bloating, peritonitis, and pericarditis example of?

Answer 15

Nociceptors

Question 16

What organs are NOT sensitive to cutting, heat or cold?

Answer 16

Visceral

Question 17

What receptors respond to innocuous stimuli and trigger physiological reflexes?

Answer 17

Physiologic receptors

Question 18

What tract do some axons of second order neurons cross the midline to the contralateral white matter ascend as?

Answer 18

Spinothalamic tract

Question 19

What do axons that remain on the same side form?

Answer 19

Spinomedullary tract

Question 20

What tract is pain, thermal sensations, crude touch, tickle and itch, sexual sensations?

Answer 20

Spinothalamic tract

Question 21

What tract is gentle touch, vibrations, pressure, position of the joints?

Answer 21

Spinomedullary tract

Question 22

What fibers are carried by sympathetic and parasympathetic nerves?

Answer 22

Viscerosensory nerves

Question 23

What are NOT a part of the sympathetic systems?

Answer 23

Viscerosensory fibers

Question 24

The cerebral cortex perceive visceral sensations such as _________

Answer 24

Stretching

Question 25

What stimuli sensitive the nociceptors via substances that are formed in injured tissues such as prostaglandins and histamine?

Answer 25

Pain-evoking

Question 26

What fibers is acute pain transmitted by?

Answer 26

A delta

Question 27

What fibers is chronic pain transmitted by?

Answer 27

C fibers

Question 28

What reflex has pain fibers on the skin that influence motor neurons in the ventral horn of the spinal cord via interneurons?

Answer 28

Withdrawal reflex

Question 29

Where does the withdrawal reflex stimulate motor neurons innervate?

Answer 29

Muscles on the thigh

Question 30

What is the result of the withdrawal reflex?

Answer 30

Retraction of paw

Question 31

Treatment of pain involves: Drugs that inhibit the activation of ___________

Answer 31

Nociceptors

Question 32

Treatment of pain involves: Drugs that ________ the impulse conduction in pain fibers

Answer 32

Block

Question 33

Treatment of pain involves: Drugs that block signal transmission in pain pathways in the ___

Answer 33

CNS

Question 34

Treatment of pain involves: Via _______ of body’s own pain-modulating system

Answer 34

Activation