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Which Organization Has a Standard Numbering System for Sizing Cutting

question 17

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Which organization has a standard numbering system for sizing cutting tips?


Definitions:

Trophoblast

The outer layer of cells surrounding a blastocyst in early pregnancy, which develops into the placenta and provides nutrients to the embryo.

Amniotic Sac

A fluid-filled sac that surrounds and protects the embryo and fetus in the uterus during pregnancy.

Zygote

The first cell created through the fusion of an egg cell and a sperm cell, signifying the start of a new organism's growth.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing fetus while removing waste products through the umbilical cord.

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