Between 23 and 30 Weeks

question 15

Multiple Choice

Between 23 and 30 weeks,

• A) fetuses display rhythmic alterations between sleep and wakefulness that gradually increase in organization.
• B) connections form between the cerebral cortex and brain regions involved in pain sensitivity.
• C) fetuses distinguish the tone and rhythm of different voices and sounds.
• D) the mother can first feel the fetus's movements.

---

Definitions:

Contraction

The process of muscle fibers shortening and generating force, resulting in the movement or stabilization of parts of the body.

Desmosomes

Strong cell junctions that anchor cells to each other in tissues subject to stretching, like skin and heart muscle.

Gap Junctions

Gap junctions are specialized intercellular connections that facilitate the direct transfer of ions and molecules between neighboring cells.