Special Senses Test Flashcards
Static equilibrium - maintains balance when body is ___________
Still/not moving
Otoliths - rocks in labyrinth composed of _________
Calcium carbonate (CACO3)
Dynamic equilibrium - maintains balance when body is ________
Moving
__________ is the part of the brain that helps maintain balance
Cerebellum
Equilibrium:
Type of receptor = _________, specialized _____ cells
Mechano; hair
Equilibrium:
_______ = sense that assists in maintaining equilibrium
Vision
Motion sickness - 4 causes
- Labrynthitis
- Too much information
- Displacement of otoliths
- Incongruent information
5 taste sensations
Sweet, sour, salty, bitter, savory
Organs of taste - _________
Taste buds
Organs of taste:
Location
Tongue, walls of throat, roof of mouth
Organs of taste:
Replaced every ___ days
3
_______ dissolves foods to get them into the taste buds
Saliva
“Hot” (spicy) foods stimulate _____ receptors and ________
Pain; thermal
Anosmia -
Inability to smell
Taste + smell -
Work together to increase enjoyment of food
Sensory adaptation -
Adapt easily, recover well
How to detect faint odors -
Sniff
Odorant molecules -
Dissolved before they are detected
Free nerve ending -
Pain, itching, and temperature
Meisner’s Corpuscles -
light touch
Pacinian Corpuscles -
deep pressure
Muscle spindles -
detect stretch at ligaments
Specialized hair cells -
Perceive sound and maintain equilibrium
Tissue damage -
Stimulates pain receptors
Referred pain -
Feel pain elsewhere than part damaged
Acute pain fibers = __________, chronic pain fibers = ____________
Myelinated; unmyelinated
Endorphins -
Natural pain control
Stimulus -
Creates impulse
Blind spot -
Retinal neurons leave the eyeball
Fovea centralis -
Focus point
Refraction -
Refractory structures: cornea, lens, fluid
Lacrimal glands -
Tear glands
After-image -
Optical illusion: persistent image
Myopia -
Near-sightedness
Pupil dilation / constriction -
Dilates in dim light, constricts in bright light
Newborn eyesight -
Focus point is 9-12 in. (less than adults)
Rods -
Dim light, black and white
Cones -
Color
Bonus
Humans have 10-20 million olfactory bulb receptors while dogs have up to 300 million…