During the First Four Days Following Conception, the Structure of 60

question 85

Multiple Choice

During the first four days following conception, the structure of 60 to 80 cells is called the

• A)homo spherical.
• B)blobonoidal entity.
• C)blastocyst.
• D)zygotenoid.

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Definitions:

Pineal Gland

A small endocrine gland in the vertebrate brain that produces melatonin, which helps regulate sleep patterns.

Melatonin Release

The secretion of the hormone melatonin by the pineal gland, regulating sleep-wake cycles.

Darkness

The absence of light in an environment, resulting in limited visibility.

Homeostasis

The regulation of internal conditions within an organism to maintain a stable, constant environment despite external changes.