HTHSCI 1H06 Chapter Notes - Chapter 14,21: Muscles Of Respiration, Palman, Peptide
14 Dec 2015
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Document Summary
The brain and spinal cord develop from the ectodermal neural tube: anterior part expands, along with the associated neural crest tissue. Constrictions in this expanded tube soon appear, creating three regions called primary brain vesicles: prosencephalon, mesencephalon, and rhombencephalon. Both the prosencephalon and rhombencephalon subdivide further, forming. The walls of these brain regions develop into nervous tissue, while the hollow interior of secondary brain vesicles. the tube is transformed into its various ventricles (fluid-filled spaces). The expanded neural crest tissue develops protective structures of brain. Four major parts of the brain: brain stem: is continuous with the spinal cord consists of the medulla oblongata, pons, and midbrain, cerebellum = little brain . Posterior to the brain stem: diencephalon. Consists of thalamus, hypothalamus, and epithalamus: cerebrum. Supported by the diencephalon and brain stem. Two layers: periosteal layer (which is external, meningeal layer (which is internal).
