Your SlideShare is downloading. ×
10 Neurons & Intro to Nervous
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

10 Neurons & Intro to Nervous

277

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
277
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
9
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. This is amazing. Try to read the paragraph below, then consider what it actually says. The brain is a wonderful thing isn’t it? Aoccdrnig to rscheearch at Cmabrigde Uinervtisy, it deosn’t mttaer in waht oredr the ltteers in a wrod are, the olny iprmoatnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a total mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe and the biran fguiers it out aynawy…WOW!
  • 2. Interesting Brain facts
    • The adult human brain weighs about 3 pounds
    • Einstein’s was 2.7 pounds
    • The human brain has about 100 billion neurons
    • The human spinal cord has about 13,500,000 neurons
  • 3.
    • The world record for time without sleep is 264 hours or 11 days by Randy Gardner in 1965!
    • Unconsciousness will occur 8-10 seconds after loss of blood supply to the brain.
    • Neurons multiply at a rate of 250,000 neurons per minute during early pregnancy
  • 4. General Functions of the Nervous System
    • Words to KNOW
      • Neurons
      • Neuroglial cells
      • Dendrites
      • Axon
      • Nerves
      • Synapses
      • Neurotransmitters
      • Central Nervous System
      • Peripheral Nervous System
        • sensory receptors
        • effectors
          • Somatic
          • Autonomic
  • 5.
    • Cell Types of Neural Tissue
      • neurons
      • neuroglial cells
  • 6. Divisions of the Nervous System
    • Central Nervous System
      • brain
      • spinal cord
    • Peripheral Nervous System
      • peripheral nerves
        • cranial nerves (12)
        • spinal nerves (31)
  • 7. Divisions Nervous System
  • 8. Divisions of Peripheral Nervous System
    • Sensory Division
      • picks up sensory information and delivers it to the CNS
    • Motor Division
      • carries information to muscles and glands
      • Systems of the Motor Division
        • Somatic – carries information to skeletal muscle
        • Autonomic – carries information to smooth muscle,
        • cardiac muscle, and glands; “automatic”
  • 9. MIGRAINES
    • Read Clinical Application 10.1
    • 70% are women; perhaps hormonal influences
    • Actually a response to changes in the diameters of blood vessels in the face, head and neck; constricting and dilating
    • Classic  4-6 hours
    • Common  3-4 days
    • Familial Hemiplegic  few hours to days; also paralyzes one side of the body
  • 10. Neuron Structure
  • 11. Myelination of Axons
    • White Matter
      • contains myelinated axons
      • faster impulses
    • Gray Matter
      • contains unmyelinated structures
      • cell bodies, dendrites
  • 12. Dendrite Axon terminal Schwann cell nucleus Node of Ranvier Axon Myelin Nucleus Cell Body Quiz Friday over neurons!!!
  • 13. Multiple Sclerosis Clinical Application 10.2
    • Symptoms
      • blurred vision
      • numb legs or arms
      • can lead to paralysis
    • Causes
      • myelin destroyed in various parts of CNS
      • hard scars (scleroses) form
      • nerve impulses blocked
      • muscles do not receive innervation
      • may be related to a virus
  • 14. Classification of Neurons
    • Bipolar
      • two processes
      • eyes, ears, nose
    • Unipolar
      • one process
      • ganglia
    • Multipolar
      • many processes
      • most neurons of CNS
  • 15. Classification of Neurons
    • Sensory Neurons
      • carry impulse to CNS
      • most are unipolar
      • some are bipolar
    • Interneurons
      • link neurons
      • multipolar
      • in CNS
    • Motor Neurons
      • multipolar
      • carry impulses away from CNS
      • carry impulses to effectors
  • 16. Regeneration of A Nerve Axon
  • 17. The Synapse Nerve impulses pass from neuron to neuron at synapses
  • 18. Synaptic Transmission
    • Impulse travels away on axon
    • Synaptic knob becomes permeable to Calcium ions, they flood in
    • Allows synaptic vesicles to fuse with the membrane
  • 19. Synaptic Transmission
    • Neurotransmitters are released via exocytosis into the synaptic cleft
    • Neurotransmitters float over to receptors on the postsynaptic neuron (dendrite)
    • Impulse continues
    • Reuptake occurs with leftover neurotrans- mitters or they are broken down
  • 20. Neurotransmitters

×