DENDRITES

CELL BODY AXON

MYELIN SHEATH

GLIAL CELL/ GLIA

NODE OF RANVIER

a cell that aids in the support of a neuronGLIAL CELL

CNS PNS

SCHWANN CELLSOLIGODENDROCYTEASTROCYTE

•wraps around the axon of neurons in the PNS•multiple Schwann Cells in a row form the Myelin Sheath•provides insulation -> action potential travels faster by jumping to the Ranvier nodes between Schwann cells

SCHWANN CELL

https://www.youtube.com/watch?v=vBzV7pOtze4

a cell that aids in the support of a neuronGLIAL CELL

CNS PNS

SCHWANN CELLSOLIGODENDROCYTEASTROCYTE

•provides myelin insulation to multiple axons of neurons in the CNS

OLIGODENDROCYTE

•star-shaped glial cells that anchor neurons to their blood vessels•plays an important role in the Blood Brain Barrier

ASTROCYTE

•semi-permeable membrane separating the brain from the blood•helps maintain homeostasis for the brain•protects the brain from foreign substances•O2, CO2, glucose, alcohol, various hormones are among the few substances that can pass through the BBB

BLOOD BRAIN BARRIER

Research:-Aneurysm-Alcohol Intoxication-Stroke-Multiple Sclerosis-Meningitis-Alzheimer’s Disease

How does it affect neurons? -> What are symptoms?2min Presentations Monday