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Brain, brainstem, forebrain, diencephalon, midbrain, pons, medulla, cerebellum, spinal cord
Identify the primary germ layer:
Develops into internal organs
Gives rise to somites (bone, skeletal muscle, and dermis of skin)
Develops into neural structures and epidermis of the skin
Innervation to mesodermic structures is through what part of nervous system? To endodermic structures?
Endoderm
Mesoderm
Ectoderm
Somatic
Visceral
The process of a longitudinal band of ectoderm thickening to form the neural plate around week 3 of gestations is initiated by what?
Notochord => the primary induced in the early embryo
When do neural folds begin to close, forming a neural tube?
What end of the tube develops into brain? What end into spinal cord?
End of week 3
Rostral = brain
Caudal = spinal cord
What cells (as the fusion of the neural tube occurs and they dissociate from the top crest of each neural fold) migrate away from the neural tube and differentiate into a variety of cell types including the sensory neurons in the ganglia of the spinal nerves and some cranial nerves (V, VII, VIII, IX, and X), postganglionic neurons of the autonomic nervous system, the Schwann cells of the peripheral nervous system (PNS), and the adrenal medulla.
Neural crest cells
Somites
Neural folds
Neural plate
Cut edge
Neural tube
Neural groove
Future neural crest
At what week does development of the brain begin?
4
What are the three primary vesicles and where do they appear on the neural tube (what end)?
Prosencephalon
Mesencephalon
Rhombencephalon
What are the five secondary vesicles and at what week do they appear?
Telencephalon
Diencephalon
Metencephalon
Myencephalon
What are the three components of the brain?
Forebrain
Midbrain
Hindbrain
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