Cranial Nerves Flashcards
mnemonic device
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12 cranial nerves?
I Olfactory
II Optic
III Oculomotor
IV Trochlear
V Trigeminal
VI Abducens
VII Facial
VIII Vestibulocochlear
IX Glossopharyngeal
X Vagus
XI Accessory (Spinal Accessory)
XII Hypoglossal
Function of nerves mnemonic device (sensory, motor, both).
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CN 1
Olfactory- sensory
CN 2
Optic- sensory
CN 3
Oculomotor- Motor
CN 4
Trochlear- motor
CN 5
trigeminal- both
CN 6
abducens- motor
CN 7
facial- both
CN 8
vestibulocochlear- sensory
CN 9
glossopharyngeal- both
CN 10
vagus- both
CN 11
accessory- motor
CN 12
hypoglossal- motor
What are the cranial nerves involved with speech and swallowing?
5,7,9,10,11,12
What does gray matter do?
receives information & regulates outgoing information
Contains Cell bodies of neurons
What does white matter do
Sends info to other regions of the brain, spinal
What is GABA
Primary inhibitory neurotransmitter in brain and most output of basal ganglia
Alpha Motor Neurons
the alpha motor neurons that innervate the muscle spindle (extrafusal)
Large cell bodies
Receive proprioceptive sensory input
Gamma Motor Neurons
Gamma – innervate muscle spindle (intrafusal)
small cell bodies
lack direct proprioceptive input
Function of CSF
Provides mechanical protection/ cushioning
Facilitates homeostasis
Facilitates communication between CNS & Peripheral nervous system & Immune system
What are myotomes?
a group of muscles which is innervated by single spinal nerve root.
