BIOD 152 module 3 Questions with 100%
Correct Answers
what senses contain specialized receptors via specialized somatic and visceral afferents?
smell, equilibrium
the posterior portion of the outer fibrous layer of the eye is called the
sclera
what portion of the eye supplies blood supply to the other layers of the eye?
choroid (of the middle layer)
true or false: the more numerous type pf photo receptors are rods.
true
what is the correct order of how light passes through the eye?
cornea, lens, vitreous fluid, retina
a patient is found to have blindness of the right visual field of both eyes. what part of the
vision pathway was most likely damaged? explain your response.
Left LGN
all sensory information from the right visual fields travels together after optic chiasm to the
left side of the brain.
a patient is found to have blindness in the right eye. what part of the vision pathway was
most likely damaged? explain your repsonse.
right optic nerve. information from the right visual has not yet crossed the optic chiasm. both
peripheral and nasal fields of the right eye would be missing.
, true of false: all sensory information from the optic nerves cross at the optic chiasm.
false
what is controlled by the abducens nerve?
lateral rectus
your elderly patient is discussing her vision problems. she describes her vision as blurry.
following a visual examination, her left eye deviates medially when looking straight
ahead. what is most likely causing the vision problem? explain your reasoning.
abducens nerve controls the lateral rectus. damage to the lateral rectus would cause there to
be a muscle imbalance, and the medial rectus would pull the eye medially when looking
straight ahead, causing blurry vision. (diplopia)
Match the numbers (1-5) in the figure below with the correct terms (A-H).
Note: not all terms will be used.
1- A: Scala Tympani
2- B: Facial Nerve
3- C: Tympanic Membrane
4- D: Cochlear duct
5- E: Organ of Corti
F: external acoustic meatus
G: cochlear nerve
H: Scala Vestibuli
1- H. Scala vestibuli
2- D. cochlear duct
Correct Answers
what senses contain specialized receptors via specialized somatic and visceral afferents?
smell, equilibrium
the posterior portion of the outer fibrous layer of the eye is called the
sclera
what portion of the eye supplies blood supply to the other layers of the eye?
choroid (of the middle layer)
true or false: the more numerous type pf photo receptors are rods.
true
what is the correct order of how light passes through the eye?
cornea, lens, vitreous fluid, retina
a patient is found to have blindness of the right visual field of both eyes. what part of the
vision pathway was most likely damaged? explain your response.
Left LGN
all sensory information from the right visual fields travels together after optic chiasm to the
left side of the brain.
a patient is found to have blindness in the right eye. what part of the vision pathway was
most likely damaged? explain your repsonse.
right optic nerve. information from the right visual has not yet crossed the optic chiasm. both
peripheral and nasal fields of the right eye would be missing.
, true of false: all sensory information from the optic nerves cross at the optic chiasm.
false
what is controlled by the abducens nerve?
lateral rectus
your elderly patient is discussing her vision problems. she describes her vision as blurry.
following a visual examination, her left eye deviates medially when looking straight
ahead. what is most likely causing the vision problem? explain your reasoning.
abducens nerve controls the lateral rectus. damage to the lateral rectus would cause there to
be a muscle imbalance, and the medial rectus would pull the eye medially when looking
straight ahead, causing blurry vision. (diplopia)
Match the numbers (1-5) in the figure below with the correct terms (A-H).
Note: not all terms will be used.
1- A: Scala Tympani
2- B: Facial Nerve
3- C: Tympanic Membrane
4- D: Cochlear duct
5- E: Organ of Corti
F: external acoustic meatus
G: cochlear nerve
H: Scala Vestibuli
1- H. Scala vestibuli
2- D. cochlear duct
