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9 June, 21:36

The umbilical cord select one:

a. appears as a tiny stalk and eventually grows to a length of 6 to 12 inches.

b. contains one large artery that delivers nutrients to the embryo.

c. connects the placenta to the developing organism.

d. permits the blood of the mother and the embryo to mix directly.

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  1. 9 June, 21:56
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    The umbilical cord select one:

    The right option is; b. contains one large artery that delivers nutrients to the embryo.

    The umbilical cord is a flexible hollow structure that joins a fetus to the mother's placenta (an organ that joins to the mother's blood supply). The umbilical cord is composed of; a vein that transports oxygen rich blood and nutrients from the mother to the fetus, and two arteries that transports deoxygenated blood and wastes, such as carbon dioxide, from the fetus back to the placenta.
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