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22 Cards in this Set
- Front
- Back
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Brainstem comprises of what?
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midbrain
pons medulla oblongata |
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Where is reticular formation? What is its function?
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In the brainstem. Awareness, consciousness, respiratory and cardiac function
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How many colliculi are there in the brainstem?
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4
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What are the divisions and functions of colliculi?
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superior colliculi: vision reflex
inferior colliculi: auditory reflex |
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What's the function of pons?
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it connects left and right hemispheres of cerebellum
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Dorsal portion of the pons contain what?
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sensory and motor tracts, and the nuclei of the abducens, facial and trigeminal nerves
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Ventral portion of the pons contain what?
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bundles of fibres connecting the two cerebellar hemispheres
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Which cranial nerves exit the brainstem from the pons?
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CN 5,6,7,8
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The bulging out part of medulla is called what?
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olive
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The pyramids are separated by what?
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anteromedian fissure
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Which cranial nerves originate in the medulla?
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CN 9 to 12
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substantia gelatinosa of the spinal cord resembles which feature in the brainstem?
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nucleus of the spinal tract
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What are the three general sensory nuclei in the brainstem?
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mesencephalic nucleus
chief sensory nucleus nucleus of the spinal tract |
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Common sensation fibre cell bodies are found in which area of the brainstem?
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chief sensory nucleus
nucleus of the spinal tract |
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What's so special of about the mesencephalic nucleus?
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it contains cell bodies for fibres of proprioception. That is the only peripheral sensory nerve cells found within the CNS
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The special feature of mesencephalic nucleus allow what advantage?
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very fast response to biting something really hard
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The chief sensory nucleus principally subserves the function of ____ ____
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discriminative touch
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The nucleus of the spinal tract is responsible for the perception of ____, ____, ____ and ____
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touch
pressure pain temperature |
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sensory axons from which nerves synapse at the spinal tract?
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CN V, VII, IX, X and those from the upper cervical spinal segments
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Explain why when you pinch someone on the face, the facial muscles contract
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Many of the axons of CN are inter-linked within the spinal tract
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Where does the motor fibers of V terminate?
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trigeminal motor nucleus
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What are the important nuclei associated with VII?
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facial motor nucleus
superior salivatory nucleus lacrimal nucleus nucleus of the solitary tract |
