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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Question: <span>During the ________ stage, the placenta is expelled from the uterus.
Answer: It is the placental stage.
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A carbon atom can form a maximum of 4 single covalent bonds
B they were given additional dities
