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26 Cards in this Set
- Front
- Back
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what are the three main parts of the brain?
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cerebrum, brainsetm, and the cerebellum
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What are the brain fissues named by?
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by their bones
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AS you go towards the bottom of the brain..
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the actions becomes more primitive
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What are the cranial nerves' defining feature?
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they exit the cranial cavity through foramina or fissures
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what are the three layes of meninges?
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dura mater- tough outer layer
arachnoid matter- delicate middle layer pia mater- inner layer firmly attached to the surface of the brain |
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What are the two layers of the cranial dura mater?
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periosteal layer- attached to skull
meningeal- close contact with arachnoid mater |
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What do the seperations of the two layers of cranial dura mater cause?
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dural partitions- seperates the brain
intracranial venous structure- |
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What are the dural partitions? (dural infoldings)
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-falx cerebri
-tentorium cerebelli -falx cerebelli -diaphragma sellae |
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what is a potential space?
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related to the dura mater, extradural space
(can become fluid filled) |
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Through what pathways does blood enter the brain?
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-Internal carotid arteries
-vertebral arteries |
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what is stroke?
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interruption of blood supply to the brain
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What is an ischemic stroke?
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clot
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what is a hemorrrhagic stroke?
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bleeding
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What is CN I?
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The Olfactory nerve
-special sense of smell |
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What is CN II?
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Optic Nerve
-Special sense of sight |
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What is CN III?
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Olculomotor Nerve
-Striated motor muscle to 4 muscles that movie eyeball -parasympathetic to muscle that moves lens |
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What is CN IV
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Trochlear Nerve
-Straited muscle to superior oblique of eye |
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What is CN V?
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Trigeminal nerve
-Opthalmic -Maxilarry -Mandibular Somatic motor for mastication |
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What is CN VI?
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Abducent Nerve
-Striated motor to lateral rectus m q |
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What is CN VII?
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Facial Nerve
-Facial expression -Sense of taste -Parasympathetic to submandibular and subinguinal solivary glands, lacrimial glands |
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What is CN VIII?
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Vestibulocochlear
-Special sense of balance to ear -special sense of hearing |
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What is CN IX?
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Glossopharyngeal Nerve
Mouth- *para to salivary gland *general sensory *taste |
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What is CN X?
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Vagus N
-Striated motor to pharynx and larynx -parasympathetic to thorax and abdomen -general sensroy to phraynx and larynx -taste to tongue |
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What is CN XI?
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Spinal Accesory
-Striated muscle to trapezius and sternocleidomastoid |
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What are arachnoid granulations?
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small protrusions through the dura, into the venuous sinuses, allows CSF to exit the brain
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Where is CSF produced?
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In the ventricles of the brain
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