During Which Prenatal Developmental Period Do the Following Changes Take

question 57

Multiple Choice

During which prenatal developmental period do the following changes take place? Eyes appear, four chambers of the heart take shape, spinal cord begins to form, and the intestinal tract develops.

• A)germinal
• B)embryonic
• C)fetal
• D)zygotic

---

Definitions:

Outermost Shell

The last or farthest layer of an object or entity, often used to describe the external layer of atoms in chemistry or celestial bodies in astronomy.

Neutrons

Subatomic particles found in the nucleus of an atom; they are electrically neutral and along with protons, contribute to the atomic mass.

Ionic Bond

Chemical bond in which ions are attracted to one another by opposite charges.