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Human Body System Interactions – how do our 11 body systems work together to keep us alive and healthy? Levels of organization in the body. Pg. 891-894 The body systems must work together to perform nutrient absorption. Pg. 978-984 The body systems must work together to keep the body at homeostasis. Pg. 895-896 The body systems must work together to defend against illness and injury. Pg. 1036-1042 The body systems must work together for reproduction and genetic diversity. Pg. 1009-1024 Pg. 275 - 278 Vocabulary cell tissue organ organ system Nutrient absorption Digestive system Chemical digestion enzymes Mechanical digestion homeostasis Feedback inhibition Endocrine system Nervous system Lymphatic system Skeletal system Immune system Circulatory system Respiratory system Muscular system Excretory system Reproductive system meiosis Integumentary system homologous haploid diploid Crossing over regulation Questions you should be able to answer: 1. List the 11 human body systems. 2. Which systems work together to perform the function of nutrient absorption? What does each do? 3. Which systems work together to perform the function of regulation or homeostasis? What does each do? 4. Which systems work together to defend the body from injury or illness? What does each do? 5. Know the pathway from where the sperm is made to where it fertilizes the egg. 6. Differentiate between haploid and diploid. 7. Draw meiosis and explain why it is important for genetic diversity. 8. Know the levels of organization in the human body from smallest to largest. 9. Know the major organs in each human body system. 10. Why is it important for an organism to maintain homeostasis? 11. Make sure to study the material about the immune system from the last test!!!