Here is the answer that would best complete the given statement above. Autonomic nervous system reactivity in humans appears to be e<span>xplaining the acquisition of phobias and other human behaviors. Hope this is the answer that you are looking for. Have a great day ahead!</span>
Answer:
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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.
Answer: The reason why stem cell research is a big field in biology or even the world is because stem cells might be able to treat degenerative conditions as well as answering questions about human development.
