Which of the options below indicate the CORRECT sequence of events that occur during expiration? *
(a) diaphragm relaxes and returns to dome shape, ribcage moves down & in, pressure in lungs increase, lung volume decrease,
(b) diaphragm relaxes and returns to flattened shape, ribcage moves down & in, pressure in lungs increase, lung volume decreases
(c) diaphragm contracts and returns to dome shape, ribcage moves up and out, pressure in lungs increase, lung volume increase
(c) diaphragm contracts and returns to flattened shape, ribcage moves up and out, pressure in lungs increase, lung volume increase
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