The Disk-Shaped Structure That Nourishes the Embryo and Fetus Is

question 186

Multiple Choice

The disk-shaped structure that nourishes the embryo and fetus is called the:

• A) amniotic sac
• B) umbilical disk
• C) embryonic disk
• D) placenta

---

Definitions:

Elemental Symbol

A one- or two-letter abbreviation that represents a chemical element (e.g., H for hydrogen, O for oxygen).

Potassium

A soft, silvery-white metallic element, symbol K, with atomic number 19, essential for many biological functions and used in various industrial applications.

Elemental Symbol

A letter or combination of letters representing a chemical element in the periodic table.

Ruthenium

A rare transition metal belonging to the platinum group of the periodic table, with the symbol Ru and atomic number 44.