Cranial Nerves Flashcards
(29 cards)
Innervates the extraocular muscles that cause eye movements
CN III
CN IV
CN VI
Major sensory nerve of the face
Trigeminal (CNV)
Major motor nerve of face (controls expressions)
Facial Nerve (CN VII)
Hearing and equilibrium/balance
Vestibulocochlear
Swallowing and saliva production (motor)
Taste and sensation of swallowing (sensory)
Glossopharyngeal nerve CN IV
Carries most parasympathetic motor neurons, “wanderer”
Vagus nerve (CN X)
Controls shoulder shrug muscles (shoulder, neck, and head rotation)
Spinal Accessory nerve (CN XI)
Speech, chewing, swallowing (motor)
Hypoglossal nerve (CN XII)
process by which sensory receptors receive stimuli from environment.
ex. light, sound, temperature, pressure
Sensation (ability to detect and receive stimuli)
Brain will try to organize and interpret, help us analyze the stimuli we have received from the environment.
Perception
specialized cells present all over our body that receives different stimuli
sensory receptors
Very sensitive to only specific stimuli
dendrites of sensory neurons
They are the site of Transduction
Sensory receptors
Send action potentials to your central nervous system
sensory receptors
basic structure receptors, only have free nerve endings, lack specialized structures or encapsulations
Simple receptors
mechanical
Mechanoreceptors
light
Photoreceptors
chemical
Chemoreceptors
pressure
Baroreceptors
Pain, thermal, mechanical stimulus
Nociceptors
Fast, predictable, involuntary, automatic motor response to a stimulus
Reflex
Testing reflexes is a good way to test the state of what system
Nervous system
skeletal muscles
somatic
involving internal organs, smooth muscles
visceral
