mekanisme pernapasan pada manusia

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Mekanisme Pernapasan
  1. Pernapasan Dada 
a. Inspirasi
  • Otot antartulang rusuk berkontraksi
  • Tulang rusuk terangkat
  • Rongga dada membesar
  • Udara  luar masuk ke paru-paru
b. Ekspirasi
  • Otot antartulang rusuk relaksasi
  • Tulang rusuk turun/tertekan
  • Rongga dada mengecil
  • Tekanan udara paru-paru membesar
  • Udara keluar dari paru-paru
2. Pernapasan Perut
a. Inspirasi
  • Otot diafragma berkontraksi
  • Diafragma mendatar
  • Rongga dada membesar
  • Tekanan udara dalam paru-paru mengecil
  • Udara luar masuk ke paru-paru
b. Ekspirasi
  • Otot diafragma berelaksasi
  • Diafragma naik
  • Rongga dada mengecil
  • Tekanan udara paru-paru membesar
  • Udara keluar dari paru-paru

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