The Local Group Is the Environment Around

question 54

Multiple Choice

The Local Group is the environment around:

• A) the Sun that contains about a dozen stars.
• B) the Milky Way that contains a few dozen galaxies.
• C) the Sun that contains more than a billion stars.
• D) the Milky Way that contains a few thousand galaxies.

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Definitions:

Endocrine System

A bodily system comprising of glands that release hormones directly into the bloodstream to regulate body functions and maintain homeostasis.

Hormones

Chemical messengers produced by glands in the body, which travel through the bloodstream to tissues or organs to regulate bodily functions.

Bloodstream

The flowing blood within the circulatory system of the body, responsible for transporting oxygen, nutrients, waste, and other substances.

Estrogen

A group of steroid hormones that play a crucial role in the development and regulation of the female reproductive system and secondary sex characteristics.