senses

Question 1

stimuli

Answer 1

mechanical - touch, hearing, balance, proprioception

thermal

electromagnetic - vision

chemical - taste/smell

Question 2

VISION TESTS

Answer 2

Visual acuity (20/20)

Blind Spot (no rods/cones where optic nerve enters eye -> brain normally fills in)

colour (XX chromosome - recessive)

astigmatism (defects in lens/cornea)

Question 3

SOUND TESTS

Answer 3

tick (air vibrations enter middle ear -> nerve impulse sent + interpreted as sound)

rinne (sound reappearing from air conduction in middle ear - rinne positive) (sound louder behind ear - bone conduction/rinne negative)

weber (endolymph in skull vibrates - cochlear nerve damage/sensory deafness) otherwise it is conduction deafness and middle ear damage

binaural (loudness = high pitch, time arrival = low pitch)

Question 4

OLFACTORY

Answer 4

CN1

Question 5

SENSE OF TOUCH

Answer 5

thermoreceptors on skin -> sensory adaptation if exposed long

temperature extremes sent to CNS via hypothalamus

Question 6

proprioception

Answer 6

mechanical
proprioreceptors on muscle -> cerebellum -> motor signals to adjust muscle tension