Crinal Nerves

What does rostral mean?

Towards the nose

Study this

Okay

What nerves are 1 (dorsal)?

sensory

What nerves are 2 (middle)?

Autonomic

What nerves are 3 (ventral)?

motor

What are the parts of the brainstem?

midbrain, pons, medulla

Is the autonomic function located in the brainstem parasympathetic or sympathetic?

parasympathetic

What tract is 1?

Sensory

What tract is 2?

parasympathetic autonomic (sensory and motor)

What tract is 3?

motor

What is the name of cranial nerve 1?

olfactory

What is the name of cranial nerve 2?

Optic

What is the name of cranial nerve 3?

Oculomotor

What is the name of cranial nerve 4?

Trochlear

What is the name of cranial nerve 5?

Trigeminal

What is the name of cranial nerve 6?

Abducens

What is the name of cranial nerve 7?

Facial

What is the name of cranial nerve 8?

Auditory or vestibular/cochlear

What is the name of cranial nerve 9?

Glossopharyngeal

What is the name of cranial nerve 10?

vagus

What is the name of cranial nerve 11?

(spinal) accessory

What is the name of cranial nerve 12?

hypoglossal

What is a nucleus?

A collection of neuronal cell bodies in the CNS

What all can CN 1 function as?

sensory, motor, and autonomic

What are the somatic sensory (afferent) nerves?

2, 5, and 8

What are teh parasympathetic sensory (afferent) nerves?

1, 7, 9, and 10

What are the somatic motor (efferent) nerves?

3, 4, 5, 6, 7, 9, 10, 11, and 12

What are the parasympathetic motor (efferent) nerves?

3, 7, 9, 10, (11)

What nerves help with vision?

2

What nerves help with hearing/vestibular nerves?

5 and 8

What nerves help with smell?

1

What nerves help with taste/solitary nucleus?

7, 9, and 10

What nerves have something to do with the nucleus ambiguus?

3, 4, 5, 6, 7, 9, 10, 11, and 12

What is 1?

optic canal

What is 2?

orbital fissure

What is 3?

oval foramen

What is 4?

rostal alar foramen

What is 5?

stylomastoid foramen

What is 6?

Foramen magnum

What is 1?

Cribriform plate

What is 2?

hypoglossal canal

What is 3?

optic canal

What is 4?

orbital fissure

What is 5?

round foramen

What is 6?

oval foramen

What is 7?

canal for trigeminal nerve

What is 8?

internal acoustic meatus

What is 9?

Jugular foramen

Where are the majority of the CN nuclei located in the brain?

medulla

What type of nerves have unipolar neurons (1)?

sensory

What types of nerves are bipolar neurons (2)?

retina, inner ear, and olfactory

What type of nerves are multipolar nerves (3)?

motor and interneuron

What is this structure?

Dorsal root ganglion?

Where does the olfactory nerve come from?

olfactory mucosa and vomeronasal organ

Does the olfactory nerve go through the hypothalamus?

no

What does the olfactory nerve pass through?

cribriform plate

Where does the olfactory nerve synapse?

olfactory bulb neuron

What is this?

flehmens response

What organ is used for the flehmen’s response?

vomeronasal organ

What is 1?

olfactory cell

What is 2?

olfactory bulb

What is 3?

olfactory tract

What is 1?

olfactory bulb

What is 4?

cribriform plate

Where do olfactory nerves terminate?

pirifrom lobe

What are the axons that olfactory bulb neurons send caudally?

olfactory tracts

What is 1?

Olfactory bulb

What is 2?

piriform lobe

What is 3?

medial olfactory tract

What is 4?

Lateral olfactory tract

What is 1?

olfactory bulb

What is 2?

lateral olfactory tract

What is 3?

piriform lobe

What is 1?

Rhinencephalon

Study this

okay

Where does the olfactory nerve terminate for reflexes?

brainstem

Where does the olfactory nerve terminate for behavior and emotion?

reticular formation

What is 1?

amygdala

What is 2?

hippocamus

What is 3?

piriform lobe

What is 1?

Hippocampal formation

What is 2?

amygdala

What system that is found in the hippocampus/amygdala uses the olfactory nerve to evoke strong emotional reactions?

limbic systems

Why does the olfactory nerve go to the CN nuclei for salivation and release of digestive enzymes?

reflex response

Is the optic nerve a nerve?

no

How does the optic nerve enter the skull?

optic canal

What receptors allows for night vision?

rods

What receptors allows for color vision?

cones

What comes together to from the optic nerve?

rods and cone receptors

What is 1?

optic canal

What is 1?

Optic nerve

What is 1?

optic chiasm

What happens to the optic nerve at the optic chiasm?

decussate (cross to opposite sides)

What percent decussation of the optic never (II) do primates have?

50%

What percent decussation of the optic nerve (II) do cats have?

65%

What percent decussation of the optic nerve (II) do dos have?

75%

What percent decussation of the optic nerve (II) do fish have?

100%

What type of species has more decussation?

prey species

What type of species has less decussation?

predator species

What type of species have laterally placed eyes?

prey species