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# Body Plan and Organization ## 1. Compare and contrast anatomy and physiology. * Anatomy is the study of the body. It focuses on the physical structures of the body. * Physiology is the function of how the body works. ## 2. Identify and arrange the six levels of structural organization of the...

# Body Plan and Organization ## 1. Compare and contrast anatomy and physiology. * Anatomy is the study of the body. It focuses on the physical structures of the body. * Physiology is the function of how the body works. ## 2. Identify and arrange the six levels of structural organization of the human body from the simplest level to the most complex level. 1. Chemical Level: This is the most basic level of organization, and it encompasses all of the atoms and molecules that make up our bodies. 2. Cellular Level: Atoms and molecules are arranged into the next level, cells. 3. Tissue Level: Similar cells are grouped together to form tissues. 4. Organ Level: Tissues are combined to form organs. 5. Organ System Level: Multiple organs work together to perform a specific function. 6. Organism Level: All of the organ systems work together to form a complete living organism. ## 3. Give an example of each of the six levels of structural organization of the human body. | Level | Example | |---|---| | Chemical Level | Atoms, molecules | | Cellular Level | Cells | | Tissue Level | Epithelial tissue, muscle tissue, connective tissue | | Organ Level | Heart, lungs, brain, skin | | Organ System Level | Circulatory system, nervous system, digestive system | | Organism Level | Human being | ## 4. List the eleven organ systems we will study in this class and write at least one function of each of them. | Organ System | Function | |---|---| | Integumentary System | Encloses internal body structures. | | Skeletal System | Supports the body, protects organs. | | Muscular System | Moves bones, maintains posture. | | Nervous System | Detects, interprets, and responds to environmental changes. | | Endocrine System | Maintains long-term homeostasis. | | Lymphatic System | Protects from pathogens, foreign particles. | | Cardiovascular System | Transports oxygen, nutrients. | | Respiratory System | Provides gas exchange. | | Digestive System | Prepares food particles for entry into the blood system. | | Urinary System | Maintains homeostasis by regulating water. | | Reproductive System | Produces and transports gametes. |