sábado, 11 de agosto de 2007

O diafragma e a influência na produção vocal

Diafragma



Face inferior do diafragma
Face inferior do diafragma

Movimentos diafragmáticos



Movimento do diafragma
Movimento do diafragma

Durante a inspiração, a cúpula diafragmática se contrai e desce, reduzindo a pressão intratorácica e comprimindo as vísceras abdominais. Esta manobra auxilia a entrada do ar nos pulmões e também a circulação sanguínea na veia cava inferior (que passa pelo forame da veia cava no diafragma). A descida do diafragma resulta também no aumento do diâmetro vertical do tórax.

Na expiração ocorre o processo inverso, o diafragma relaxa e sobe, aumentando a pressão intratorácica e expulsando o ar dos pulmões.

Seus movimentos são importantes para a tosse, espirros, parto e defecação. Além de poder determinar desordens respiratórias como o soluço — que consiste em espasmos involuntários do diafragma com consequente entrada rápida de ar nas vísceras respiratórias e fechamento espasmódico da glote (abertura da laringe), gerando o som característico.

Distúrbios associados ao diafragma

As doenças respiratórias limitam seus movimentos, o que por sua vez reduz a capacidade ventilatória dos pulmões. As principais terapias fazem o enfermo reeducar o diafragma por meio de fisioterapia respiratória. Na ocorrência do estômago ou intestino penetrar através desses pontos de passagem, originam-se hérnias diafragmáticas.

As doenças que mais afetam ao diafragma são, a asma brônquica e o enfisema pulmonar.

7 comentários:

  1. Pow, gostei desse post sobre o bendito diafragma. Todo mundo tem, mas pouca gente usa. Na música é muito importante q ele esteja bem ativo em todos os momentos. :D

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