Senses + Hearing Flashcards
Where do action potentials occur?
Nerve fibres
What are the eyes, ears and skin part of
Peripheral sensory components
Accessory structures _____ stimulus to receptor cells
Translate
Receptor cells _____ stimulus to a biological response
Transduce
Afferent nerve fibres _____ information to central nervous system
Transmit
Why does the receptor potential produces or modulates a train of action
potentials?
To transmit info to brain
The role of receptors in all sensory systems is to..
To convert the physical energy of the stimulus into biological response.
What is the full form of RMP?
Resting Membrane Potential
What is the RMP?
Difference in electrical charge across the membrane.
The speed of sound depends on the __ and the __ of the medium in which
the pressure changes are happening.
Elasticity & density
What are the subsections of the ear?
Inner, middle, external
The middle ear is an air-filled cavity containing three ossicles called the…
Malleus, Incus and Stapes
What is the order of hearing?
The world → External auditory canal → Tympanum →
Malleus → Incus → Stapes → Cochlea
Where are the hearing sensory receptors located?
Cochlea
What are the ‘hairs’ on hair cells called
Stereocilia
What is the cochlea?
A coiled, fluid-filled tube containing receptors and afferent nerves
Why do ears pop?
Changes in air pressure, Eustachian tube opens up
Damage to the apex of the cochlea would mean…
Loss of low frequency sounds
