BIOL 104 Lecture Notes - Lecture 11: Auditory Cortex, Cranial Nerves, Sensory Cortex
17 Apr 2017
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Made up of myelinated sheaths (which cover axons and dendrites). It looks while because these sheaths are quite fatty. This consists mostly of nerve cell bodies, as well as axons and dendrites without the myelinated sheath. These are spaces in the cns that contain cerebrospinal fluid: cerebrospinal fluid moves nutrients, hormones, and other substances around, it also acts as a shock absorber, particularly in the brain. Meninges: nervous tissue generally has the consistency of watery jello. It"s very fragile: meninges are made up of tough connective tissue and surround nervous tissue. This helps protect nervous tissue; it also allows for cerebrospinal fluid to circulate: in the brain, meninges consist of: The dura mater, which is an outer covering. The arachnoid membrane, which is a space in the middle and is also filled with cerebrospinal fluid. The pia mater, which is the inner membrane lying right over the brain.
