• What types of muscles are in the body? • What are the different types of muscle tissue?
• How do skeletal muscles work?
• What does the skeleton do?
• What are the characteristics of bones?
• What role do joints play?
• What is the role of the nervous system?
• How do the parts of the nervous system work?
• How do the muscular, skeletal, and nervous systems work together to maintain homeostasis?
• How does the endocrine system function?
• Which hormones do endocrine glands release?
• How are hormone levels regulated?
• How does the reproductive system work?
• What structures make up the male and female reproductive systems?
• What nutrients do you need?
• What happens in the digestive system?
• What is the process of digestion?
• What is the role of excretory system?
• What are the structures of the urinary system?
• How does the excretory system help the body maintain homeostasis?
• What is the role of the respiratory system?
• What happens when you breathe?
• What happens in the circulatory system?
• What are the structures of the heart?
• How does blood flow through the circulatory system?
• What does blood contain?
• What are the benefits and limitations of scientific experiments and investigations?
• What pathogens cause infectious disease?
• What is the role of the immune system?
• How are pathogens spread?
• How do infectious diseases affect body systems?
• What are noninfectious diseases, and how do people get them?