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Unformatted text preview: 04/07/2011 Lecture 22 Clicker question #1: How many different somatosensory neurons are required to transmit an electric signal from the CNS to an effector neuron; where is/are the cell body/cell bodies located? → B. 1; 1 in the ventral horn of the spinal cord Fenestrated capillaries: – Have pores in the endothelial cells (6-15 nm in diameter) – Endocrine glands, intestines, pancreas, and glomeruli of kidney – Allow small molecules and limited amounts of protein to diffuse How do red blood cells get “into” the capillaries in the bone marrow? – Sinusoidal capillaries have similar sized openings (6-15 nm in diameter) in the endothelium – Larger molecules (up to 60 nm) pass by reticuloendothelial cell-mediated phagoendocytosis and transvascular release – aided by a discontinuous basal lamina – bone marrow, lymph nodes, and adrenal gland, liver, spleen III. Brain a. Introduction 4. Meninges = 3 layers of CT surrounding the CNS – Protect the CNS – Contains a portion of the CSF –...
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- Spring '08
- primary motor cortex, primary visual cortex, cerebral cortex a.