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Nady [450]
3 years ago
13

Which of these is a finger-like sac that has no known function in humans?

Biology
1 answer:
babymother [125]3 years ago
3 0
<span>It is a membranous sac attached to an embryo, functioning as the circulatory system of the human embryo before internal circulation begins until about 3 weeks of age if I recall. It also forms the umbilical cord. A collet is used for clamping purposes. It forms a collar around an object, and clamps down on it as it is tightened. A 5C collet has external threads used for lathes..</span>
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Answer:

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brainly.com/question/12701636

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