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64 Cards in this Set
- Front
- Back
How many cranial Nerves?
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12
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Name the __ cranial nerves
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12
Olfactory 1 optic 2 Oculomotor 3 Trochlear 4 Trigminal 5 Abducens 6 Facial 7 Vestibulocochlear 8 Glossopharyngeal 9 Vagus 10 Accessory 11 Hypoglossal 12 |
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Which cranial nerves have Only sensory function
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Olfactory 1
Optic 2 Vestibulocochlear 8 small ships make money but my brother says big boats make more |
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which cranial nerves only have motor function
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Oculomotor 3
Trochlear 4 abducens 6 accessory 11 Hypoglossal 12 |
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does olfactory nerve 1 have sensor, motor function or both? what is its function
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sensory
Smell |
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does optic nerve 2 have sensory, motor function or both? what is its function
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sensory
sight |
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does oculomotor nerve 3 have sensory, motor function of both? what is its function
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motor
Ciliary muscle, pupil constriction, extrinsic eye muscles (not superior oblique or lateral rectus) |
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does trochlear nerve 4 have sensory, motor function or both? what is it function
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motor
superior oblique |
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does trigeminal nerve 5 have sensory, motor function or both? what is it's function?
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both
sensory - face teeth and tongue motor - mastication |
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does abducens nerve 6 have sensory, motor function or both? what is it's funciton
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motor
lateral rectus |
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does facial nerve 7 have sensory, motor function or both? what is its function
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both
sensory - taste anterior 2/3 of tongue motor - facial muscles, saliva and tears |
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does vestibulocochlear nerve 8 have sensory, motor function both? what is its function
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sensory
hearing and balance |
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does glossopharyngeal nerve 9 have sensory, motor function or both? what is its function
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both
sensory - taste( post 1/3 of tongue) motor - swallowing and saliva |
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does vagus nerve 10 have sensory, motor function or both? what is it;s function
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both
sensory - visceral sensation ( thoracic and abdominal cavities motor - swallowing and 70% of parasympathetic |
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does accessory nerve 11 have sensory, motor function or both? what is its function
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motor
sternocleodomastoid, trapezius |
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does hypoglossal nerve 12 have sensory, motor function or both? what is it function
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motor
tongue muscles |
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how many pairs of spinal nerves?
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31
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where are the sensory neuron cell bodies and axons found?
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cell bodies are in posterior root ganglion
axons are are from ganglion into posterior horn |
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where are motor neuron cell bodies and axons found>
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cell bodies are in the anterior horn
axons are within the anterior root |
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where are the somatic and visceral sensory nuclei found
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where are the autonomic and somatic motor nuclei found
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what is a dermatome
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specific segment of skin supplied by a single pair of spinal nerves
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what is shingles
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-During initial infection, the chickenpox virus sometimes leaves the skin and invades the posterior root ganglia
-Virus remains latent until adulthood -Rash of scaly, painful blisters --Usually confined to one or a few adjacent dermatomes |
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what is a nerve plexus?
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-A network of interweaving spinal nerves
-Split into multiple “named” nerves that innervate various body structures |
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what are the ___ principal plexuses
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4
Cervical Brachial Lumbar Sacral |
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the cervical plexus stems from spinal nerves ___-_____
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c1-c5
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what does the cervical plexus innervate?
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Innervates anterior neck and parts of head and shoulders
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which spinal nerves does the phrenic nerve stem from
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C3-5
C345 keep diaphragm alive |
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the brachial plexus stems from spinal nerves _-____
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c5-t1
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what does the brachial plexus innervate
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pectoral girdle and upper limbs
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the brachial plexus ends up being which __ nerves
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5
Musculocutaneous - anterior arm radial - both post compartments median - ant forearm and thumb ulnar- median forearm axillary - deltoid and teres minor |
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the lumbar plexus stems from spinal nerves ___-___
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l1-l5
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the lumbar plexus innervates the ...
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lower limb
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L2-L4 the lumbar plexus ends up being is the ______ which innervates_____
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femoral nerve
anterior thigh muscles |
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the sacral plexus stems from spinal nerves __-___
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L4-S4
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the sacral plexus innervates the .....
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lower limb
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the main nerve of the sacral plexus ....
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sciatic
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sciatic nerve divides into .....
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common fibular and tibial nerves
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where is the most common spinal nerve injury
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L4-L5
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dorsiflexion and inversion are innervated by which spinal nerves
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L4-L5
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what are the steps of the reflex arc
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1 Receptor
2 Sensory (afferent) neuron 3 Interneurons 4 Motor (efferent) neuron 5 Effector |
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what are the characteristics of a monosynaptic reflex
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The simplest of all reflexes
No interneurons The stretch reflex is an example (patellar or knee-jerk reflex) |
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what are the characteristics of a polysynaptic reflex
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More complex neural pathway
More than one synapse involving interneurons within the reflex arc The withdrawal reflex is an example |
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which system has two motor neurons somatic or autonomic
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autonomic (synapse)in
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which system has one sensory neuron somatic or autonomic
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both
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in the sympathetic division of the autonomic nervous system is the pre-ganglionic neuron short or long
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short
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in the sympathetic division of the autonomic nervous system is the post0ganglionic neuron short or long
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long
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in the sympathetic division of the autonomic nervous system is the pre-ganglionic neuron myelinated>
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yes
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in the sympathetic division of the autonomic nervous system is the post-ganglionic neuron myelinated?
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no
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are there a lot of branches of preganglionic axons in the sympathetic division of autonomic system
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yes
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are there a lot of branches or postganglionic axons in the sympathetic division of the autonomic system
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no
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sympathetic division chart
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where does the sympathetic division originate from
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T1-L2
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what are the functions of the sympathetic division of the autonomic system
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-Fight or Flight”
-Activated in emergency situations and when excited or stressed. |
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t/f in the parasympathetic division the preganglionic neuron is myelinated and the post-ganglionic neuron is not
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t
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t/f in the parasympathetic division the pre-ganglionic neuron is short and the post-ganglionic neuron is long
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f
opposite |
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t/f in the parasympathetic division there are a extensive branches of both the pre and pos-ganglionic neuron
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f
both have few |
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parasympathetic chart
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where does the parasympathetic division originate
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Brainstem (CN III, VII, IX and X)
Sacral spinal cord |
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what are the functions of the parasympathetic division
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Rest and Digest”
Conserves energy and replenishes energy stores |
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what are the affects of the parasympathetic and sympathetic divisions on the pupils
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sympathetic - pupil dilation
parasympatheitic - pupil constriction |
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what are the affects of the parasympathetic and sympathetic divisions on the digestive system
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sympathetic - reduced activity
parasympathetic - increased activity |
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what are the affects of the parasympathetic and sympathetic division on the heart
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sympathetic - increased heart rate
parasympathetic - decreased heart rate |
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t/f some blood vessels are affected by the sympathetic division but not the parasympathetic
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t
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