ANAT 102 Lecture Notes - Lecture 14: Cochlea, Respiratory Center, Limbic System
22 Feb 2017
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Document Summary
Brain and spinal cord develop from the neural tube which has 3 primary brain vesicle regions: Diencephalon thalamus, hypothalamus, epithalamus and third ventricle. Mesencephalon midbrain and aqueduct of the midbrain. Metencephalon pons, cerebellum, upper fourth ventricle. Myelencephalon medulla oblongata, lower part of fourth ventricle. Dura mater, arachnoid mater and pia mater. Dura mater has 2 layers instead of 1: periosteal layer and meningeal layer. Blood flow increases when the activity of neurons increase. Tight junctions of endothelial cells that seal the brain blood capillary cells and a membrane surrounding the capillaries. Protects brain from harmful substances by serving as a selective barrier. Brain injury cause breakdown of bbb and permit passage of bad substances. Ventricle: csf filled cavities within the brain: One on each hemisphere of the cerebrum. Between the l and r sides of the thalamus. Protects brain and spinal cord from injury. Allows brain to float in cranial cavity. Transport system for hormones secreted by the hypothalamus.
