Lab quiz senses Flashcards
gustatory receptors and olfactory receptors are what kind of receptors
chemoreceptors
if no saliva can you taste sweet#salty
no
why saliva prodcution is impo in sense of taste
chemicals from food dissolve in saliva and contact the taste cells through the taste pores which allows to taste
5 taste perceptions
sweet, sour, salty, bitter, umami (amino acids)
do you need to smell to taste
yes
link increase use of salt in old age and old persons sense of smell
old=sense of smell fades away, harder time to taste so more salt
what happens when hand in cold water and other in warm water and then both hands in bowl same temp
hand in cold water feels warm
hand in hot water feels cold
adaptation
receptors overlly stimulated they become desensitised
adaptation in hearing
noisy environment, hearing overly stimulated, sensory system adapts and is de-sensitised so can communicate with another person
smell
pie, smell overlly stimulated, so sensory systems adpats and is de-sensitised so fading odor to person
order of number of touch receptors between palm, lower arm and shoulder
palms, lower arm, shoulders
somatic senses
touch, pressure, vibration, temperature, body position, limb position, pain
type of skin receptor detecting deep pressure
lamellar corpuscule
what senses that the quadriceps muscle has stretched
proprioceptors
why ears pop in chnaging altitude
up in altitude exetrnal pressure decreases and air in inner ear will push on ear drum causing pressure
down, external pressure increases and pushes on eardrum
goal: pop to restore equal pressure
what does 20-200 vison mean
can see 20 feet when others can see 200 feet
what does 20-50-1 vision mean
read all but one letter on 20-50 line
perfect vision
20-20
astigmatism
imperfection in curvature of persons eye: causes blurred vision near and at a distance
trouble with near vision
presbyotic
myopic
light focused on a point before the retina
laser surgery
curvature of retina increased, so focuses better on retina
accomodation
look object, ciliary muscle contract so lens become more round, older=lens more rigid
presbyopia
need to read from further bc decreases the elsticity of eye so light focuses behind retina