Which statement best describes anatomy and physiology?

1. Anatomy studies the reaction of chemicals to different substances, and physiology studies the body's internal functions.

2. Anatomy studies the physical structure of the human body, and physiology studies the body's internal functions.

3.Anatomy studies the body's internal functions, and physiology studies the physical structure of the human body.

4. Anatomy studies all living things, and physiology studies the way the human body moves and is connected.