Lab 22: General sensation

Question 1

interoceptor

Answer 1

responds to stimuli arising from within the body

Question 2

extreroceptor

Answer 2

responds to stimuli outside internal environment. Found closest to the bodies surface

Question 3

Backing into a sun heated iron railing

Answer 3

exteroceptor

pain receptor

Question 4

Soemone steps on your foot

Answer 4

exteroceptor

pain receptor

Question 5

Reading a book

Answer 5

exteroceptor

photoreceptors

Question 6

Leaning on elbows

Answer 6

exteroceptor

pancinian corpuscles and proprioceptors

Question 7

Doing sit ups

Answer 7

intereceptors

proprioceptors

Question 8

the too full sensation

Answer 8

interoceptor

visceral receptors

Question 9

seasickness

Answer 9

exteroeceptor

equilibrium apparatus of the inner ear

Question 10

explain how the sensory receptors act as transducers

Answer 10

they change environmental stimuli into afferent nerve impulses

Question 11

define stimulus

Answer 11

anything that can trigger a response

Question 12

what is demonstrated by a two point discrimination test

Answer 12

the demonstration is testing touch receptors, and how they are distributed in different areas of the body

Question 13

how well did the results correspond to your predictions

Answer 13

my predictions were off. the space between the touch receptors was greater than expected

Question 14

what is the relationship between the accuracy of the subjects tactile loclization and the results of the two point discrimination test

Answer 14

the distance of both were not closely similar

Question 15

define punctuate distribution

Answer 15

the clustering at certain points of sensory receptors. they are not distributed uniformly

Question 16

which cutaneous receptors are the most numerous

Answer 16

pain receptors

Question 17

Which two body areas were most sensitive to touch

Answer 17

lips, finger tips

Question 18

which two body areas tested were least sensitive to touch

Answer 18

ventral forearm, back of the neck

Question 19

where would referred pain appear if the following organs were reciving painful stimuli

1. galbladder
2. kidneys
3. appendix

Answer 19

1. right inferior thorax
2. lumbar
3. right lower quandrant

Question 20

where was referred pain felt when the elbow was immersed in ice during the laboratory experiment

Answer 20

upper arm (medial)

Question 21

What region of the cerebrum interprets the kind and intensity of stimuli that cause cutaneous sensations

Answer 21

somatosensory area

Question 22

define adaptiation of sensory receptors

Answer 22

when the receptor discharge slows and conscious awareness of the stimulus declines or is lost until some type of stimulus change occurs

Question 23

why is it advantatious to have pain receptors that are sensitive to all vigerous stimuli, whether heat, cold or pressure

Answer 23

to warn you quickly of harm or dangers that are happening to your body

Question 24

Why is the nonadaptability of pain receptors important

Answer 24

if we could adapt to pain easily we would not recognize continued conditions that could affect us

Question 25

imagine yourself without any cutaneous sense organs. why might this be dangerous

Answer 25

you will not know if you are in danger. you could cut yourself badly and get an infection or die without being able to detect it, protect yourself, or seek medical care in time

Question 26

what is the probable explaination of referred pain

Answer 26

referred pain happens when nerve fibers from regions of high sensory input and nerve fibers from regions of normally low sensory input happen to converge on the same levels of the spinal cord

Question 27

define referred pain

Answer 27

the phenomenon of pain percieved at a site adjacent to or at a distance from the site of an injured organ