ANAT 261 Lecture Notes - Lecture 19: Axon Hillock, Nissl Body, Neuroglia
Document Summary
Exam questions: correct order of blood flow, which of the following doesn"t contain sm, composed of 100 billion neurons and trillions of supportive glial cells, nerve tissue is distributed throughout the body as an integrated communication network. Structure of a typical neuron: functional unit of the nervous sytem: neurons consist of, dendrites, receive signals from synapse, cell body/soma/perikaryon. Central nervous system: cerebrum: most of the brain, anterior, posterior, occipital, has cortexes, etc, gray and white matter, gray: contains neuronal cell bodies and neuroglial cells, white: contains axons and neuroglial cells. Myelination: pns: schwann cells in pns produce the myelin sheath, one axon is myelinated by one sc, pink lines are axons. In a longitudinal section can see the folding occurring: perpendicular to axons: myelin is not well preserved but the structure wrapping around the axon can be seen. In cross section, there"s remnants of myelination visible around bundle. Long answer: visit to the sqdc and inhaled something.
