After About Eight Weeks of Conception, Male Fetuses Are Exposed

question 9

Multiple Choice

After about eight weeks of conception, male fetuses are exposed to higher levels of ______, resulting in a more "masculinized" brain.

• A) testosterone
• B) melatonin
• C) estrogen
• D) kisspeptin

---

Definitions:

Alveoli

Tiny air sacs within the lungs where the exchange of oxygen and carbon dioxide occurs.

Gas Exchange

The process of exchanging oxygen and carbon dioxide between an organism and its environment, fundamental for respiration in living beings.

Larynx

The voice box located in the throat responsible for vocalization, breathing, and protecting the trachea against food aspiration.

Inhaled Dirt

Microscopic particles from the environment that are drawn into the respiratory system during breathing.