Human Body Systems Overview Hierarchical Organization of Body

• Human Body Systems Overview

Hierarchical Organization of Body Plans • Most animals are composed of specialized cells organized into tissues that have different functions • Tissues make up organs, which together make up organ systems Copyright © 2008 Pearson Education, Inc. , publishing as Pearson Benjamin Cummings

• Tissues are groups of cell with a common structure and function. – Different types of tissues have different structures that are especially suited to their functions. – The term tissue is from a Latin word meaning “weave. ” • • • Tissues are classified into four main categories: A. epithelial tissue B. connective tissue C. nervous tissue D. muscle tissue

Homeostasis: (Greek Homeo=similar Stasis=standing still) the property of a system that regulates its internal environment and tends to maintain a stable, constant condition = Maintaining a body condition at a certain specific set point

Temp of house going up Thermostat senses warmer temp than set point and Furnace turned off Temp of house goes down 720 Homeostasis of house temp Temp of house goes up Temp of house getting cooler Thermostat sense cooler temp than set point and Furnace turned on

Assignments: 1. Complete homeostasis assignment sheet 2. Make a poster Called “The 11 Body Systems” on long piece of paper from roll a. Show organs of each system in a different color b. Work on this with dissection group you will be working in for pig (max 4) c. This will be due May 31 so class time after dissections will be available for working on this The 11 Body Systems: 1. Integument, 2. Skeletal, 3. Muscular, 4. Nervous, 5. Digestive, 6. Circulatory, 7. Respiratory, 8. Endocrine, 9. Excretory, 10. Immune / Lymphatic, 11. Reporductive