page 2 coming up ervous 572Tissue ells are densely paJLGcked and intertwined

Page 2 coming up ervous 572tissue ells are densely

This preview shows page 3 - 6 out of 10 pages.

page 2, coming up! ')$ervous 572Tissue ±ells are densely paJLGcked and intertwined 572Two main JLGcell types: ')$eurons – transmit eleJLGctriJLGcal signals ')$euroglial JLGcells (461Support ±ells) – non-exJLGcitaIKFble; surround and wrap neurons 572The supporting JLGcast! µlial (461Supporting) ±ells 461Six types of glial (supporting) JLGcells ´our in the ±')$461S 1. ¶stroJLGcytes 2. &(iJLGcroglia 3. ·pendymal ±ells 4. )+&ligodendroJLGcytes 572Two in the 02-')$461S 1. 461SJLGchwann JLGcell 2. 461Satellite JLGcell
Image of page 3
¶stroJLGcytes &(ost aIKFbundant glial JLGcell type – Support and brace neurons – Play role in exchanges between capillaries and neurons – Control chemical environment around neurons – Influence neuronal functioning •Participate in information processing in brain &(iJLGcroglia 461Smallest and !%'east aIKFbundant &(igrate toward injured neurons ·ngulf invading miJLGcroorganisms and dead neurons 572Thorny proJLGcesses that touJLGch and monitor neurons &(ultiple 461SJLGclerosis: miJLGcroglial JLGcells attaJLGck the nervous system (damages myelin sheath) ·pendymal ±ells !%'ine the JLGcentral JLGcavity of the spinal JLGcord and IKFbrain ¸elp JLGcirJLGculate the JLGcereIKFbrospinal fluid via JLGcilia • ¶JLGct as a IKFbarrier IKFbetween ±461S´ in JLGcavities )+&ligodendroJLGcytes ¸ave few IKFbranJLGches <>9Wrap their JLGcell proJLGcesses around axons in the ±')$461S 02-roduJLGce myelin sheaths-inJLGcrease speed of inpulse
Image of page 4
461Supporting JLGcells in the 02-')$461S 7<MR]UqDI`c`c MRQVN^a^ao - surround axons in the 02-')$461S; form myelin sheaths- similar to oligodendroJLGcytes 7<DIqQVN^a^a^VYqQVN MRQVN^a^ao – surround neuron JLGcell IKFbodies in 02-')$461S- similar to astroJLGcytes in ±')$461S 572The neuron ¸uman IKFbody JLGcontains IKFbillions ²asiJLGc struJLGctural unit of the nervous system 461SpeJLGcialized JLGcells that JLGconduJLGct eleJLGctriJLGcal impulses along the plasma memIKFbrane • ±an funJLGction optimally for over 100 years, IKFbut are amitotiJLGc (JLGcannot IKFbe replaJLGced)
Image of page 5
Image of page 6

You've reached the end of your free preview.

Want to read all 10 pages?

  • Spring '18
  • Bardsley

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture