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23 Cards in this Set
- Front
- Back
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Epidermis and neural tissue develope from which germ layer?
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ectoderm
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Muscle and connective tissue develops from which germ layer?
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mesoderm
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The epithelial linings of the GI and respiratory tracts develop from which germ layer?
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endoderm
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What induces the overlying ectoderm to form the neural plate?
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embryonic notochord
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What is neurulation
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neural tube formation
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The fusion of neural folds happens in what direction?
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rostro-caudal
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neural canal is open to the amniotic cavity by which openings?
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rostral neuropore
caudal neuropore |
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When do the neuropores close?
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During the establishment of blood supply to the neural tube
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The brain is derived from neural tube rostral to (and spinal cord derived from neural tube caudal to) the ____ pair of somites.
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4th
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This is the region of cell proliferation in the spinal cord.
Cells here become____ |
ventricular zone
neurons and macroglia |
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This zone is where neurons differentiate and form axons and dendrites.
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Intermediate zone aka Mantle Layer
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This is the area at the edge of the cord where longitudinal axon fascicles grow
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Marginal zone
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Which plate in the developing spinal cord becomes the sensory portion of the spinal cord
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Alar plate
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Which plate in the developing spinal cord becomes the motor portion of the spinal cord
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Basal plate
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The dorsal horn is derived from which plate
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Alar
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The ventral horn is derived from which plate?
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Basal
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What are the 3 primary vesicles that develop in the neural tube rostral to the 4th pair of somites
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prosencephalon - forebrain
mesencephalon - midbrain rhombencephalon - hindbrain |
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The prosencephalon will differentiate into what structures?
What do those structures eventually become? |
Telenchephalon
Diencephalon T - Cerebral Hemispheres D - Thalami |
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The rhombencephalon will differentiate into what structures?
What do those structures eventually become? |
Metencephalon
Myelencephalon met - Pons, Cerebellum Mye - Medulla oblongatta |
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What are the three main folds caused by differential growth of the developing brain
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Midbrain flexure
Pontine Flexure Cervical flexure |
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Where are the postganglionic neurons found in sympathetic ANS?
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sympathetic chain ganglia
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Where are the postganglionic neurons found in parasympathetic ANS?
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in visceral wall or ganglia close to organ
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Preganglionic neurons for the sympathetic ANS arise from ____horn in which vertebral levels?
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Lateral
T1 - L2 or L3 |
