Special Senses QUIZ 3 Flashcards
What are the special senses?
smell (olfaction)
taste (gustation)
vision
hearing and equilibrium
What are the primitive senses that are also chemical?
smell and taste
Which of the special senses provides the most direct link to our external environment?
smell
Chemicals that produce odor are called what?
odorant
How many ordorant molecules can humans detect?
350
The combination of odorants results in humans being able to detect how many distinct odors?
10,000
What is hyposmia?
impaired sense of smell
Taste provides how many distinct sensations?
5
What are the 5 tastes?
sweet (need energy)
salty (need to replace electrolytes)\
bitter (poison or spoiled food potentially)
sour (unripe)
umami (meaty or savoury)
What are the receptor for taste called?
gustatory receptor cells
Where are gustatory receptor cells found?
in the taste buds (about 50 per taste bud)
Which cranial nerves convey taste to the brain?
facial, glossopharyngeal, vagus
More than half of all sensory receptors are in what organ in humans?
the eye
What are functions of eyelids?
shades the eye for sleep
protects the eye from light and FOD
spread lubricating fluid (tears)
What is the function of eyebrows and eyelashes?
protect the eyes from sweat, FOD, direct rays of the sun
