Study sets, textbooks, questions
Upgrade to remove ads
physiology lab exam 2
Terms in this set (30)
where does the perception of touch and temperature occur? what does the map of this region (sensory homunculus) tell you about the density of receptors in different body areas?
The perception of touch and temperature occurs in the sensory cortex of the brain. The sensory homunculus map demonstrates that if a small part of the body occupies a relatively large region of the sensory cortex then it has a high density of receptors
glucose and fructose are made of the same number and types of atoms. why do they taste different?
Glucose and fructose taste different because fructose binds to sweet receptors better than glucose therefore, they send action potentials with a higher frequency which is perceived as sweeter than glucose.
aspartame is made up of two amino acids. why is it sweet-tasting if it is not a carbohydrate?*
Aspartame is sweet tasting even though it is not a carbohydrate because it binds to sweet receptors, thereby being perceived in the sensory cortex as sweet tasting.
some people have been advised by their physician to cut down on salt (NaCl) and use salt substitute (KCl) instead. these people tend to use too much salt substitute. based on your results, explain why.*
The salt substitute KCl may be overused because it interacts less with salty receptors than NaCl which makes it taste less salty than regular salt, therefore people overuse the salt substitute to reach the same level of saltiness.
how would the death of receptors affect perception? explain
The death of receptors would decrease transduction therefore, decreasing perception
two people of the same age have very different near point measurements. how is that possible?
Two people of the same age can have different near point measurements depending on their genetics which affect the elasticity of the individuals' lens.
in the blind spot demonstration what did you "see" in place if the figure that disappeared? does "seeing" occur in the eyes or the brain?
In the blind spot demonstration, I saw the white paper in place of the figure that disappeared. "Seeing" occurs in the brain because it is obvious the object did not disappear, the way your brain perceived the visual information simply changed
is your visual awareness always an accurate representation of reality? explain
your visual awareness is not always an accurate representation of reality. for example in the blind spot test, the symbol did not disappear but you were no longer able to see it
what abnormalities can be detected by observing the retina with an ophthalmoscope?
Some abnormalities that can be observed with an ophthalmoscope include a displaced retina, a torn retina, and floaters.
why are hearing and vision tests given as part of a regular physical exam and to young children before starting school?
Hearing and vision tests are given as part of a regular physical exam and to young children to detect any hearing and vision disabilities that can be accommodated.
how is sound located? why are we often inaccurate locating sound that originates in the midsagittal plane?
Sound is located in the brain by a difference in the loudness of the sound reaching each ear and the difference in the time of arrival of the sound in each ear. because the sound arrives at each ear at about the same time and with the same loudness in each ear, the brain has a hard time perceiving the differences.
Results of Rinne Test conductive hearing loss
could detect vibrations by placing tuning fork at the back of their head; no sound detected at the opening of the ear
Rinne's test results sensory hearing loss
no sound would be detected
weber's test results conductive hearing loss
vibrations would be perceived louder than usual because there would be no interfering outside noise
weber's test results sensory hearing loss
would hear no sound because hair cells are dead
Sets found in the same folder
Lab exam #1 Physiology
Lab Exam 2 Physiology
Other sets by this creator
Biology Final (Echinoderms- Env. Problems)
Amphibians & Reptiles
Chordates and Fishes
A restaurant offers French fries with a variety of dipping sauces served in paper cones. If the cones are 3 inches tall and 3 inches in diameter, how many fluid ounces of sauce can they hold?
Write a one-page story showing how a teen can use refusal skills to avoid getting into a car with a driver who has been drinking.
Suppose you have a traditional health insurance plan that pays for 80% of your medical bills. How much would your out-of-pocket costs be for a $200 bill?
Match each definition with the correct term. Cooperation, citizenship, compromise, role, friendship, relationship, communication. A part you play in a relationship.
Other Quizlet sets
Chapter 49 Test
Adult Health Exam 1
Pharmacy by the Numbers