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Valentin [98]
3 years ago
5

The defecation reflex __________. involves long and short reflexes and involves two positive feedback loops involves two positiv

e feedback loops is entirely voluntary involves long and short reflexes
Biology
1 answer:
ch4aika [34]3 years ago
3 0
The defecation reflex involves two postive feedback loops. these loops are the stretch receptors in the rectal walls and the sacral parasympathetic system. Defecation reflex empties the rectum by peristaltic movements push fecal matter from the sigmoid colon into the rectum. Then this distension of the rectal walls stimulates stretch receptors which results in defecation.
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