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29 Cards in this Set
- Front
- Back
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What is the functional unit of the nervous system?
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The neuron
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What are the 3 different neuron messaging pathways?
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Afferent
Efferent Interneuron |
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What are glia?
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Non-neuronal cells that provide services for neurons
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What are the 4 regions of the nervous system?
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PNS
Spinal Brainstem & Cerebellar Cerebral |
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What structures make up the brainstem?
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Medulla
Pons Midbrain |
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Where is the diencephalon and what does it contain?
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In the center of the cerebrum
Contains everything thalamus |
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What two arteries supply the brain?
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Internal carotid
Vertebral |
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What is white matter composted of?
Why is it white? |
Composed of axons and myelin
White due to the fat content |
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6 terms for bundles of myelinated axons?
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Tract
Lemniscus Fasciculus Column Peduncle Capsule |
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What is gray matter composed of?
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Densley clustered neuron cell bodies
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What is the Dorsal Root Ganglion (DRG)?
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Nodule on a dorsal root that contains cell bodies of neurons in afferent spinal nerves
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3 areas of white matter?
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Dorsal column
Lateral column Anterior column |
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2 main functions of spinal cord?
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Convey & Process information
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How many cranial nerves attach to the Pons?
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4
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Why are the colliculi important
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Highly involved in auditory and visual function
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How many cranial nerves are there?
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12
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Which cranial nerves are purely sensory?
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Olfactory
Optic Vestibulocochlear |
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Which cranial nerves are primarily motor?
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Oculomotor
Trochlear Abducens Accessory Hypoglossal |
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Which cranial nerves are mixed?
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Trigeminal
Facial Glossopharyngeal Vagus |
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What is the function of the cerebellum?
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Coordinate movements
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What does the pineal gland do?
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Influences secretion of other endocrine glands
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6 lobes of cerebral hemispheres
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Frontal
Parietal Temporal Occipital Limbic Insular |
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What are commissures?
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Bundles of axons
Convey information btwn cortices |
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Additional gray matter structures within white matter of cerebral hemispheres? (3)
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Thalamic structures
Basal ganglia Septal nuclei |
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What does the basal ganglia do?
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Helps to control movement
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What structures make up the limbic system?
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hypothalamus
amygdala cerebral cortex thalamus hippocampus HATCH |
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What structure produces CSF?
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Choroid plexus within lateral ventricles
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3 categorizations of lesions?
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Focal
Multifocal Diffuse |
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Speeds of onset of nervous system dysfunction?
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Acute
Subacute Chronic |
