PSYC 230 UIUC Exam 2 2025/2026 Exam
Questions and Answers 100%
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Sound stimulus - 🧠 ANSWER ✔✔the periodic variations in air pressure
traveling out from the source
pure tones - 🧠 ANSWER ✔✔A sound wave in which changes in air
pressure follow a sine wave pattern.
Loud sounds can be dangerous - 🧠 ANSWER ✔✔Prolonged contact to
sounds over 85 dB can eventually cause hearing loss. Sounds louder than
120 dB are painful. Sounds louder than 130 dB will generally result in
immediate and permanent hearing loss.
Hearing range of humans - 🧠 ANSWER ✔✔20-20,000 Hz.
,Outer ear - 🧠 ANSWER ✔✔Pinna, external auditory canal, tympanic
membrane (eardrum)
Pinna - 🧠 ANSWER ✔✔Collects and funnels sound to auditory canal and
amplifies frequencies
External auditory canal - 🧠 ANSWER ✔✔conducts sound from pinna to
tympanic membrane.
Tympanic membrane (eardrum) - 🧠 ANSWER ✔✔Thin elastic sheet.
Middle ear - 🧠 ANSWER ✔✔Eustachian tube
Tensor tympani
Stapedius
Ossicles:
Malleus (hammer)
Incus (anvil)
Stapes (stirrup)
Eustachian tube - 🧠 ANSWER ✔✔Connects the middle ear with the
pharynx and Equalizes air pressure in eardrum
, tensor tympani and stapedius - 🧠 ANSWER ✔✔Muscles attached to the
malleus; tensing the tensor tympani decreases vibration
Ossicles - 🧠 ANSWER ✔✔3 small bones in the middle ear that conduct and
amplify sounds (Malleus, Incus, Stapes)
Incus (anvil) - 🧠 ANSWER ✔✔Receives from Malleus and sends to Stapes
Malleus (hammer) - 🧠 ANSWER ✔✔Receives from tympanic membrane
and sends to incus
Stapes (stirrups) - 🧠 ANSWER ✔✔Transmits to oval window in middle ear
Inner ear - 🧠 ANSWER ✔✔Turns sound waves into neural signal
Cochlea - 🧠 ANSWER ✔✔snail shaped structure that houses hair cells
Canals in the Cochlea - 🧠 ANSWER ✔✔Vestibular, Middle, Tympanic
Reissner's membrane - 🧠 ANSWER ✔✔A thin sheath of tissue separating
vestibular and middle canals
Basilar membrane - 🧠 ANSWER ✔✔Organ of corti lies on top of, and
contains complex cells
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions and Answers 100%
Guaranteed Success | Already Rated A+
Sound stimulus - 🧠 ANSWER ✔✔the periodic variations in air pressure
traveling out from the source
pure tones - 🧠 ANSWER ✔✔A sound wave in which changes in air
pressure follow a sine wave pattern.
Loud sounds can be dangerous - 🧠 ANSWER ✔✔Prolonged contact to
sounds over 85 dB can eventually cause hearing loss. Sounds louder than
120 dB are painful. Sounds louder than 130 dB will generally result in
immediate and permanent hearing loss.
Hearing range of humans - 🧠 ANSWER ✔✔20-20,000 Hz.
,Outer ear - 🧠 ANSWER ✔✔Pinna, external auditory canal, tympanic
membrane (eardrum)
Pinna - 🧠 ANSWER ✔✔Collects and funnels sound to auditory canal and
amplifies frequencies
External auditory canal - 🧠 ANSWER ✔✔conducts sound from pinna to
tympanic membrane.
Tympanic membrane (eardrum) - 🧠 ANSWER ✔✔Thin elastic sheet.
Middle ear - 🧠 ANSWER ✔✔Eustachian tube
Tensor tympani
Stapedius
Ossicles:
Malleus (hammer)
Incus (anvil)
Stapes (stirrup)
Eustachian tube - 🧠 ANSWER ✔✔Connects the middle ear with the
pharynx and Equalizes air pressure in eardrum
, tensor tympani and stapedius - 🧠 ANSWER ✔✔Muscles attached to the
malleus; tensing the tensor tympani decreases vibration
Ossicles - 🧠 ANSWER ✔✔3 small bones in the middle ear that conduct and
amplify sounds (Malleus, Incus, Stapes)
Incus (anvil) - 🧠 ANSWER ✔✔Receives from Malleus and sends to Stapes
Malleus (hammer) - 🧠 ANSWER ✔✔Receives from tympanic membrane
and sends to incus
Stapes (stirrups) - 🧠 ANSWER ✔✔Transmits to oval window in middle ear
Inner ear - 🧠 ANSWER ✔✔Turns sound waves into neural signal
Cochlea - 🧠 ANSWER ✔✔snail shaped structure that houses hair cells
Canals in the Cochlea - 🧠 ANSWER ✔✔Vestibular, Middle, Tympanic
Reissner's membrane - 🧠 ANSWER ✔✔A thin sheath of tissue separating
vestibular and middle canals
Basilar membrane - 🧠 ANSWER ✔✔Organ of corti lies on top of, and
contains complex cells
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
