USAHS Neuroscience Exam 3 Questions and
Answers- Graded A
What is the cranial nerve exit for olfactory nerve? - ANSWER>>Cribriform plate
What is the cranial nerve exit for the optic nerve? - ANSWER>>Optic canal
What is the cranial nerve exit for the oculomotor nerve? - ANSWER>>Superior
orbital fissure
What is the cranial nerve exit for trochlear nerve? - ANSWER>>Superior orbital
fissure
How many branches does the trigeminal nerve have and what are their exits? -
ANSWER>>a. 3
b. Ophthalmic - superior orbital fissure
c. Maxillary foramen- rotundum
d. Mandibular - foramen ovale and foramen spinosum
What is the cranial nerve exit for abducens? - ANSWER>>Superior orbital fissure
What is the cranial nerve exit for facial nerve? - ANSWER>>Stylomastoid foramen
and internal acoustic meatus
How many branches does the facial nerve have? What is the nerve exit? -
ANSWER>>Greater petrosal nerve- foramen lacerum
What is the cranial nerve exit for vestibulocochlear? - ANSWER>>internal acoustic
meatus
What is the cranial nerve exit for glossopharyngeal and what is tis branch and
exit? - ANSWER>>a. Jugular foramen
b. Branch is lesser petrosal
c. Exit- comes out of foramen ovale
, Exit for vagus cranial nerve? - ANSWER>>Jugular foramen
Exit for accessory cranial nerve? - ANSWER>>Jugular foramen
Exit for hypoglossal cranial nerve? - ANSWER>>Hypoglossal canal
Where does the light enter through? - ANSWER>>lens
Once light enters through the lens it goes to the what? - ANSWER>>retina
What is the central fixation for each eye w the highest visual acuity? -
ANSWER>>fovea
This surrounds the fovea and also has a relatively high visual acuity? -
ANSWER>>macula
This area is formed by axons leaving the retina and has no photoreceptors -
ANSWER>>optic disc
15 degs lateral temporal is known as your what? - ANSWER>>blind spot
What are the 3 layers of the retina? - ANSWER>>outmost layer
biplor layer
innermost layer
What layer contains rods and cones? - ANSWER>>outermost
Do rods or cones provide low resolution visual images? - ANSWER>>rods
Are there more rods or cones? - ANSWER>>rods
Which one does not detect color? - ANSWER>>rods
Are rods or are cones located more periphery in the retina? - ANSWER>>rods
Answers- Graded A
What is the cranial nerve exit for olfactory nerve? - ANSWER>>Cribriform plate
What is the cranial nerve exit for the optic nerve? - ANSWER>>Optic canal
What is the cranial nerve exit for the oculomotor nerve? - ANSWER>>Superior
orbital fissure
What is the cranial nerve exit for trochlear nerve? - ANSWER>>Superior orbital
fissure
How many branches does the trigeminal nerve have and what are their exits? -
ANSWER>>a. 3
b. Ophthalmic - superior orbital fissure
c. Maxillary foramen- rotundum
d. Mandibular - foramen ovale and foramen spinosum
What is the cranial nerve exit for abducens? - ANSWER>>Superior orbital fissure
What is the cranial nerve exit for facial nerve? - ANSWER>>Stylomastoid foramen
and internal acoustic meatus
How many branches does the facial nerve have? What is the nerve exit? -
ANSWER>>Greater petrosal nerve- foramen lacerum
What is the cranial nerve exit for vestibulocochlear? - ANSWER>>internal acoustic
meatus
What is the cranial nerve exit for glossopharyngeal and what is tis branch and
exit? - ANSWER>>a. Jugular foramen
b. Branch is lesser petrosal
c. Exit- comes out of foramen ovale
, Exit for vagus cranial nerve? - ANSWER>>Jugular foramen
Exit for accessory cranial nerve? - ANSWER>>Jugular foramen
Exit for hypoglossal cranial nerve? - ANSWER>>Hypoglossal canal
Where does the light enter through? - ANSWER>>lens
Once light enters through the lens it goes to the what? - ANSWER>>retina
What is the central fixation for each eye w the highest visual acuity? -
ANSWER>>fovea
This surrounds the fovea and also has a relatively high visual acuity? -
ANSWER>>macula
This area is formed by axons leaving the retina and has no photoreceptors -
ANSWER>>optic disc
15 degs lateral temporal is known as your what? - ANSWER>>blind spot
What are the 3 layers of the retina? - ANSWER>>outmost layer
biplor layer
innermost layer
What layer contains rods and cones? - ANSWER>>outermost
Do rods or cones provide low resolution visual images? - ANSWER>>rods
Are there more rods or cones? - ANSWER>>rods
Which one does not detect color? - ANSWER>>rods
Are rods or are cones located more periphery in the retina? - ANSWER>>rods
