Chap7-2 - CONTINUE THE NERVOUS SYSTEM 1 THE MENINGES 2 THE...

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Unformatted text preview: CONTINUE: THE NERVOUS SYSTEM: 1. THE MENINGES 2. THE SPINAL CHORD 3. CRANIAL NERVES Two hemispheres with convoluted surfaces Provides involuntary coordination of body movements LET’s HAVE ANOTHER LOOK AT THE BRAIN: FIND STRUCTURES MENTIONED IN PREVIOUS LECTURES CAN YOU REMEMBER THEIR FUNCTION(S)? Figure 7.15a Scalp and skin Skull and vertebral column Meninges Figure 7.16a REMEMBER THE BRAIN HAS A CONSISTANCY OF …..JELLO SO TO PROTECT and CUSHION IT WE have a triple layer of Cerebrospinal fluid Blood brain barrier Figure 7.16a Dura mater ◦ Double-layered external covering Periosteum – attached to surface of the skull Meningeal layer – outer covering of the brain ◦ Folds inward in several areas Arachnoid layer ◦ Middle layer ◦ Web-like Pia mater ◦ Internal layer ◦ Clings to the surface of the brain Similar to blood plasma composition Formed by the choroid plexus Forms a watery cushion to protect the brain Circulated in arachnoid space, ventricles, and central canal of the spinal cord Figure 7.17a–b Figure 7.17cFigure 7....
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Chap7-2 - CONTINUE THE NERVOUS SYSTEM 1 THE MENINGES 2 THE...

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