chapter 8.5: nervous system
DESCRIPTION
Chapter 8.5: Nervous System. Spinal cord injuries. General paralysis Severe damage to spinal cord Loss feeling from injury down Quadriplegia—lose control of both arms and legs. Spinal injuries cont…. Paraplegia Lose control of just the legs Repair Impossible naturally - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/1.jpg)
CHAPTER 8.5: NERVOUS
SYSTEM
![Page 2: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/2.jpg)
SPINAL CORD INJURIES General paralysis Severe damage to spinal cord Loss feeling from injury down Quadriplegia—lose control of both arms
and legs
![Page 3: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/3.jpg)
![Page 4: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/4.jpg)
SPINAL INJURIES CONT… Paraplegia Lose control of just the legs Repair Impossible naturally No cell division of neurons Trying artificial division Uses stem cells
![Page 5: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/5.jpg)
THE BRAIN About 35 billion neurons About 3 pounds Cerebrospinal fluid (CSF) Brain floats in this Makes brain light Transports nutrients, neurotransmitters,
and wastes Lumbar puncture—useful in determining
CNS disease Replaced every 8 hours
![Page 6: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/6.jpg)
![Page 7: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/7.jpg)
THE CEREBRUM Largest part of the brain Conscious Thought Intelligence Gray matter—superficial layer White matter—deep layer Contains axons Gyri—grooves that increase the surface
area Left and Right Lobes Control opposite sides of the body
![Page 8: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/8.jpg)
FIGURE 8.16A
![Page 9: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/9.jpg)
CEREBRUM CONT… Parietal Lobe Primary motor cortex Directs voluntary movements Primary sensory cortex Receives somatic sensory information Ex: Touch, pressure, pain, temperature
![Page 10: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/10.jpg)
FIGURE 8.16B
![Page 11: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/11.jpg)
CEREBRUM CONT… Occipital Lobe Visual cortex All visual information
![Page 12: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/12.jpg)
FIGURE 8.16B
![Page 13: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/13.jpg)
CEREBRUM CONT… Frontal Lobe Gustatory cortex Taste sensations
![Page 14: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/14.jpg)
FIGURE 8.16B
![Page 15: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/15.jpg)
CEREBRUM CONT… Temporal Lobe Auditory cortex—hearing Olfactory cortex—smell
![Page 16: Chapter 8.5: Nervous System](https://reader036.vdocument.in/reader036/viewer/2022081511/568166e7550346895ddb26ba/html5/thumbnails/16.jpg)
FIGURE 8.16B