When the Tip Links in the Cilia Stretch, Ion Channels

question 9

Multiple Choice

 When the tip links in the cilia stretch, ion channels open and _____.

• A) sodium flows into the cell
• B) potassium flows into the cell
• C) sodium flows out of the cell
• D) potassium flows out of the cell

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Definitions:

Trophoblast

The outer layer of a blastocyst, providing nutrients to the embryo and developing into a large part of the placenta.

Placenta

An organ that develops in the uterus during pregnancy to provide oxygen and nutrients to the growing baby, while removing waste products.

Primitive Streak

The primitive streak is a structure that forms on the surface of the early embryonic disc, marking the beginning of gastrulation and establishing body axes.

Embryonic Disc

A flat plate of cells in early embryonic development that will form the embryo.