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25 Cards in this Set
- Front
- Back
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What is a soma?
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cell boy of neurons
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What is a group of neuronal somas in CNS? What is the same thing in the PNS?
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nucleus
ganglion |
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What is a bundle of axons in the CNS? What is it in the PNS? What are 3 names for CNS tracts?
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tract
nerve lemnicscus, fasciculus, funiculus |
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What is a sulcus?
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groove or furrow that serves as a visible landmark to define boundaries between CNS regions
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What is a gyrus?
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ridge between 2 sulci
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What is gray matter?
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tissue in the CNS that contains neuronal cell bodies.
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What is white matter?
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contains axons of neurons invested with myelin
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What 2 things make up the CNS and PNS?
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brain and spinal cord
cranial nerves and spinal nerve |
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What is the motor limb of the PNS?
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axons and terminal regions that extend to target muscles
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What are the 3 major sections of the brain? What does the most rostral section differentiate into? What does the caudal section differentiate into?
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prosencephalon, mesencephalon, rhombencephalon
telencephalon, diencephalon metencephalon, myelencephalon |
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What does the telencephalon give rise to?
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cerebral cortex and portions of basal ganglia
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What does the diencephalon give rise to?
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thalamus,. hypothalamus, subthalamus, and epithalamus
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What does metencephalon give rise to?
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pons and cerebellum
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What does myelencephalon give rise to?
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medulla oblongata
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What makes up the brainstem?
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mesencephalon, pons, medulla
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What are 4 lobes of a cerebral hemisphere? Which region can be seen from the medial surface of the brain and is occasionally called a lobe? What is the sixth region?
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frontal, parietal, temporal, occipital
limbic cortex insular cortex |
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What is the foramen magnum?
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Where the spinal cord exitrs the cranial cavity
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Where does the spinal cord extend to in an infant and an adult?
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L3, L1
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What structure does the caudal spinal cord taper into? What is a thread-like filament that extends from the conus medullaris to the dorsal surgace fo the coccyx?
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conus medullaris
filum terminale |
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What are the 5 landmarks of the spinal cord?
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posterior median sulcus- shall groove running down middle of dorsal surface
posterior intermediate sulcus- two mattaching grooves what divide each dorsal column into fasciculus gracilis and fasiculus cuneatus posterolateral sulcus- line of aattachment of dorsal roots anterior median fissure- deep, longitudinal fissure on the ventral midlin, contains anterior spinal artery anterolateral sulcus- line of attachment of ventral roots |
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What is the longitudinal fissure?
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Sulcus that divides two cerebral hemispheres.
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What sulcus divides frontal and parietal? What sulcus divides temporal from frontal and parietal?
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Central
Lateral |
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What cortex is visible if you open lateral sulcus?
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Insular cortex
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What occupies the cortical midline?
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limbic lobe
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What makes CSF?
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choroid plexus
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