The answer is: [D]: "os" .
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The opening for the "cervical canal" is called the:
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→ "cervical os" .
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Note that: "os" — means "mouth" in Latin; which is similar to "opening' .
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1st blank is integrity because dependability means you can be relied on while responsibility is owning up to your actions.
2nd blank is leadership because communication skills is how to talk to people regularly, not give out directions while optimism is incorrect.
Depending on the person, and the intake amount of course. But this can vary in many ways
I wanna say the lithotomy position because that is when you lay on your back with your legs open like you're giving birth. If they wanted to perform something like this, doctors would most likely use the lateral position first.
Hope this helps :)