Chapter

Basic Biology, Anatomy, and Physiology

From Human Nutrition by Human Nutrition

Concepts

1. Cell Theory

   "A living organism conducts self-sustaining biological processes. A cell is the smallest and most basic form of life. The cell theory incorporates three principles: Cells are the most basic building u

2. Cell Structure

   "Each of your individual cells is a compact and efficient form of life—self-sufficient, yet interdependent upon the other cells within your body to supply its needs. Independent single-celled organism

3. Cell Organelles

   "Although the cell is the “most basic” unit of life, it is structurally and functionally complex. A cell can be thought of as a mini-organism consisting of tiny organs called organelles. The organelle

4. Organization Levels

   "Unicellular organisms can function independently, but the cells of multicellular organisms are dependent upon each other and are organized into five different levels in order to coordinate their spec

5. Organ Systems

   "The human body has eleven organ systems. The cardiovascular system includes the heart, blood and lymph vessels, blood, and lymph, and transports nutrients and waste products. The digestive system inc