swimming diving and echolocation
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Swimming, Diving and Echolocation. Swimming. Streamlined bodies. Breathing. Quick breaths Can empty and re-fill lungs in 2 seconds!!! Renew ~90% of air in single breath Humans ~10%. Diving Physiology. More blood than non-diving mammals More hemoglobin More myoglobin. Dive Reflex.

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Presentation Transcript
swimming
Swimming
  • Streamlined bodies
breathing
Breathing
  • Quick breaths
    • Can empty and re-fill lungs in 2 seconds!!!
  • Renew ~90% of air in single breath
    • Humans ~10%
diving physiology
Diving Physiology
  • More blood than non-diving mammals
    • More hemoglobin
    • More myoglobin
dive reflex
Dive Reflex
  • Heart rate slows
    • Bradycardia
  • Blood flow reduced
    • Vasoconstriction
  • Increase in

lactic acid

dive reflex1
Dive Reflex
  • Collapsible thoracic cavities
the bends
The Bends
  • Decompression Sickness
    • N2
echolocation
Echolocation
  • 1500 m/sec
  • Object is 3 sec away
  • 4500 m away
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