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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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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