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29 Cards in this Set
- Front
- Back
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Functions of the nervous system |
regulate movement of body parts, regulate secretion from glands, collect info about external and internal environment, maintaining a state of consciousness, stimulate behavior for survival All req. Rapid transmissions of info |
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Neuroglia Types |
Oligodendrocytes, schwann cells, astrocytes, ependymal cells |
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Neurons |
functional, signal conducting cells |
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Brain Stem divisions |
diencephalon, midbrain, pons, medulla oblongata |
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Ventricular System parts |
Lateral Ventricles, Interventricular Foramen, Third Ventricle, Cerebral Aqueduct, Forth Ventricle |
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Spinal Cord |
Caudal Continuation of medulla oblongata, Gray matter in center (butterfly shape), each segment has a pair of spinal nerves formed by dorsal + ventral roots |
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Meninges |
CT tissue covering of brain and spinal cord, Duramater --> arachnoid mater --> Pia Mater |
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Pia Mater |
Deepest of meninges, delicate membrane that forms a sheath around blood vessels |
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Arachnoid mater |
web-like filaments |
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Duramater |
Tough fibrous covering of CNS, it fills the role of periosteum in crainum, separated from periosteum of vertebral canal by a fat filled space |
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Sub-arachnoid space |
(found in both cranial and spinal meninges) Space between pia mater and arachnoid mater |
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Pituitary Gland |
Hypophysis, ant. and post. lobes separated by paris intermedia |
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Oligodendrocytes |
provide myelin sheath for CNS |
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Microglia |
Macrophage of nervous system |
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Astrocytes |
forms blood-brain barrier |
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Astr |
star |
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Ependymal cells |
epithelial like cells, produces CSF |
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Schwann cells |
myelin producers for PNS |
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Sulcus |
Depression |
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Gyrus |
Raised ridges |
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Deep depression |
Fissure (divides brain into lobes) |
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cerebellum Follia |
"Mulitple folds" |
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Corpus Callosum |
axons crisscrossing, connect right and left hemisphere |
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Midbrain |
Mesencephalon |
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Later Appertures |
Makes CSF go into sub-arachnoid layer |
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Choroid plexus |
Group of capillaries that produces CSF |
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Plexus |
Entanglement |
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CSF |
(cerebrospinal fluid) shock absorption, adds nutrients, removes wastes, clear fluid, some sugar, some salt, can be clinically harvested |
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Spinal Cord |
gray inside (butterfly shaped), white outside as an escape route for axons, bulges (ganglia) only present on dorsal side: holds somas |
