Page 35 - E-Modul Konsep Tekanan Zat Pada Makhluk Hidup_Neat

F a s e e k s p i r a s i p e r n a p a s a n d a d a .

O t o t a n t a r t u l a n g r u s u k r e l a k s a s i - - >
t u l a n g r u s u k m e n u r u n - - > p a r u - p a r u
m e n y u s u t - - > t e k a n a n u d a r a d a l a m p a r u -
p a r u l e b i h b e s a r d i b a n d i n g k a n d e n g a n
t e k a n a n u d a r a l u a r - - > u d a r a k e l u a r d a r i
p a r u - p a r u .

Gambar 3.2 Siklus Pernapasan Dada

Pernapasan Perut

P e r n a p a s a n p e r u t m e r u p a k a n p e r n a p a s a n y a n g m e k a n i s m e n y a m e l i b a t k a n a k t i f i t a s o t o t -
o t o t d i a f r a g m a y a n g m e m b a t a s i r o n g g a p e r u t d a n r o n g g a d a d a . S i k l u s p e r n a p a s a n p e r u t
d a p a t d i l i h a t p a d a g a m b a r 3 . 3 .

Mekanisme Pernapasan Perut

F a s e e k s p i r a s i p e r n a p a s a n p e r u t .
o t o t d i a f r a g h m a r e l a k s a s i p o s i s i d a r i m e n d a t a r k e m b a l i
m e l e n g k u n g p a r u - p a r u m e n g e m p i s t e k a n a n u d a r a d i p a r u -
p a r u l e b i h b e s a s d i b a n d i n g k a n t e k a n a n u d a r a l u a r u d a r a
k e l u a r d a r i p a r u - p a r u .

F a s e i n s p i r a s i p e r n a p a s a n p e r u t .

s e k a t r o n g g a d a d a ( d i a f r a g m a )
b e r k o n t r a k s i p o s i s i d a r i m e l e n g k u n g
m e n j a d i m e n d a t a r p a r u - p a r u
m e n g e m b a n g t e k a n a n u d a r a d a l a m
p a r u - p a r u l e b i h k e c i l d i b a n d i n g k a n
t e k a n a n u d a r a l u a r u d a r a m a s u k .

Gambar 3.3 Siklus Pernapasan Perut

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