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25 Cards in this Set
- Front
- Back
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what structures make up the CNS?
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The Brain and the spinal cord
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What is the A.N.S. a subdivision of?
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The ANS is a subdivision of the PNS and the CNS
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The the two types of cells of the nervous system, also state each ones function?
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1) the Neuron = electrically excitable
2) Glia = supportive cell |
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In the development of the nervous system, name the two structures the Nueral Ectoderm divide into?
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1) Nueral Tube
2) Nueral Crest |
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Name the 4 glial cells of the CNS and state each ones function
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1) Astrocytes = participate in glosis and Scar Tissue
2) Oligodendrocytes = Myelinate axons in CNS 3) Ependymal Cell = Line the ventricles of the Brain and form secratory cells of the choroid plexusess. Ependymal Cells secrete C.S.F. 4)Microglia = Pagocytic cells from blood. These are the macrophages of the brain |
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Name the two types of Glial Cells of the PNS?
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Satellite cells = surron and support ganglion cells
Schwann Cells = Myleninate axons in PNS |
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Explain the embryonic development during the first 26 days of development?
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1) The ectoderm thickens along the Dorsal midline to form the Neural plate.
2) The nueral fold fuses dorsally and forms the neural tube |
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Name the 3 primary brain vessicles
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1) Prosencephalon = The forebrain
2) Mesencephalon = The Mid-brain 3) Rhombencephalon = The hindbrain |
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in ____ weeks of embryonic development, secondary brain vessicles from?
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In 5 weeks of embryonic development, secondary brain vessicles from?
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What two structures arise from the prosencephalon?
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Telencephalon and Diencephalon
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What two structures arise from the Rhombencephlon ?
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1) Metencephlon
2) Myelencephlon |
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Of the three primary vesicles, which one is the largest and also referred to as the Cerebrum?
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Prosencephalon
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the fate of the Diencephalon is all of the following except?
a) Thalumus b) hypothalmus c) epithalmus d) Retina e) Optic Nerve f) sensory portion of eyes g) cerebellum |
g) cerebellum is NOT correct
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Metencephalon develops into what two adult brain structures?
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Pons and the Cerebellum
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The brain stem, which is developed from the _______ and ________, consists of what 3 structures?
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The brain stem, which is developed from the Mesencephalon and Rhombocephalon, consists of what 3 structures?
a) Mesencephalon b) Pons c) medulla Oblongata |
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Name the secondary brain vessicles and the primary vessicles that each one is derived from ?
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Telencephalon from Prosencephalon
Diencephalon from the Prosencephelon Mesencephalon stays steady Metencephalon from the rhombencephalon Myelencephalon from the Rhombencephalon |
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What adult brain structures arise from the telencfephalon?
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Cerebrum and Cerebral hemisphere (cortex, white matter and basal Nuclei)
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Name the 3 germ layers and what structures/systems evolve from them?
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Ectoderm = Skin, CNS and vast part of the PNS
Mesoderm = Muscles, Connective tissue and Bone Endoderm - Cavity of the gut |
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The ______ end of the neural tube expands in three places with constrictions between them to from the 3 primary brain vessicles
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The ANTERIOR end of the neural tube expands in three places with constrictions between them to from the 3 primary brain vessicles
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Which of the following does the Neural crest form from?
A) CNS B)PNS C) spinal COrd D) NONE of the ABOVE E) All of the above |
C) Spinal Cord
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The Medulla Oblongata is formed by which secondary brain vessicle
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Myelencephalon
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The Rhombencephalon will form into two parts what are they?
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1) Metencephalon
2) Myelencephalon |
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The cavity of the mesencephalon form what cavity?
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Cerebral aquaduct
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The cavity of Rhomencephalon form which ventricle?
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Fourth Ventricle
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The brain stem consists of what adult brain structures?
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Midbrain, Pons and Medulla Oblongata
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