BIOD322
Sensory Systems
FINAL ASSESSMENT GUIDE
© Portage 2024/2025
,1. Altered Olfactory Perception:
A patient reports experiencing parosmia (distorted sense of
smell). Which part of the olfactory pathway is most likely
damaged?
- A. Olfactory bulb
- B. Olfactory receptor neurons
- C. Piriform cortex
- D. Olfactory nerve
Answer: A. Olfactory bulb
Rationale: The olfactory bulb is integral for accurately
processing smell information from receptor neurons before
sending it to the brain; damage here can lead to distorted smell
perception.
2. Hearing Loss Due to Noise Exposure:
Which structure within the cochlea is most commonly associated
with sensorineural hearing loss due to prolonged exposure to loud
noise?
- A. Basilar membrane
- B. Organ of Corti
© Portage 2024/2025
, - C. Tectorial membrane
- D. Reissner's membrane
Answer: B. Organ of Corti
Rationale: The organ of Corti contains hair cells that transduce
sound vibrations into neural signals; prolonged loud noise can
damage these hair cells, leading to sensorineural hearing loss.
3. Visual Pathway Lesion:
A lesion in which of the following locations would most likely
result in bitemporal hemianopia?
- A. Optic chiasm
- B. Optic nerve
- C. Lateral geniculate nucleus
- D. Optic tract
Answer: A. Optic chiasm
Rationale: Bitemporal hemianopia is typically caused by a
lesion at the optic chiasm, where the nasal fibers decussate,
affecting the temporal visual fields of both eyes.
4. Somatosensory Cortex Function:
© Portage 2024/2025
Sensory Systems
FINAL ASSESSMENT GUIDE
© Portage 2024/2025
,1. Altered Olfactory Perception:
A patient reports experiencing parosmia (distorted sense of
smell). Which part of the olfactory pathway is most likely
damaged?
- A. Olfactory bulb
- B. Olfactory receptor neurons
- C. Piriform cortex
- D. Olfactory nerve
Answer: A. Olfactory bulb
Rationale: The olfactory bulb is integral for accurately
processing smell information from receptor neurons before
sending it to the brain; damage here can lead to distorted smell
perception.
2. Hearing Loss Due to Noise Exposure:
Which structure within the cochlea is most commonly associated
with sensorineural hearing loss due to prolonged exposure to loud
noise?
- A. Basilar membrane
- B. Organ of Corti
© Portage 2024/2025
, - C. Tectorial membrane
- D. Reissner's membrane
Answer: B. Organ of Corti
Rationale: The organ of Corti contains hair cells that transduce
sound vibrations into neural signals; prolonged loud noise can
damage these hair cells, leading to sensorineural hearing loss.
3. Visual Pathway Lesion:
A lesion in which of the following locations would most likely
result in bitemporal hemianopia?
- A. Optic chiasm
- B. Optic nerve
- C. Lateral geniculate nucleus
- D. Optic tract
Answer: A. Optic chiasm
Rationale: Bitemporal hemianopia is typically caused by a
lesion at the optic chiasm, where the nasal fibers decussate,
affecting the temporal visual fields of both eyes.
4. Somatosensory Cortex Function:
© Portage 2024/2025
