Hearing
Where are hearing receptors found in the ear?
In the cochlea
What shape is the cochlea, and what is it filled with?
It is spiral shaped and is filled with fluid
What structure controls dynamic equilibrium, how many are there?
3 semi-circular canals
What percent of taste is actually smell?
80%
What are the two kinds of nerve endings found under the skin?
Free and encapsulated
What part of the brain processes hearing?
The temporal lobe
List the 3 small bones in the ear (superficial to deep)
Malleus, Incus, Stapes
What parts of the brain process equilibrium?
The cerebellum and the brainstem
What kind of receptors are associated with taste and smell?
Chemoreceptors
What are the 3 ways that receptors are classified?
Location, how they are stimulated, and structural complexity
What membrane do hair cells sit on?
The basilar membrane
What is the name for the outer ear cartilage that is covered in skin?
Auricle or Pinna
What structure is associated with static equilibrium, and the names of its 2 sacs?
The vestibule - saccule and utricle
About how many taste buds are located on the tongue?
5,000-10,000
What are the two kinds of receptors found in/around muscles?
Muscle spindles, Golgi tendon apparatus
What does the organ of corti turn sound waves into?
Neural impulses
What tube allows the ears to adjust inner pressure?
Eustachian Tubes
What are the small rocks in the vestibule called?
Otoliths
How many types of chemoreceptors do we have on our tongue, and what are they?
Sweet, Sour, Salty, Bitter, Umami (5)
What are the 3 ways receptors are classified by location?
Exteroreceptors, Visceroceptors, and Proprioceptors
What are the 2 characteristics of sound waves/fluid ripples that contribute to sound?
Amplitude (volume) and frequency (pitch)
What is the separating structure between the middle and inner ear?
The oval window
What covers the receptor hair cells in the crista?
A gelatinous cap called cupula
What kind of microvilli project through taste pores?
Taste hairs
What are the 5 ways receptors are classified by stimulation?
Mechanoreceptors, Chemoreceptors, Thermoreceptors, Nocireceptors, Photoreceptors