Human Body Systems.

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Presentation transcript:

Human Body Systems

Learning Objectives Describe how the human body is organized Explain how organs work together in an organ system

Organization of the Body Teamwork!

Levels of Organization Cells Tissues Organs Organ Systems Organism

Cells The basic unit of all living things. Specialized cells perform a particular function.

Tissues Tissues are groups of similar cells that perform a single function. 4 Types: Connective Muscle Nervous Epithelial Epithelial Adipose Cardiac Muscle Skeletal Muscle Neural Tissue Cartilage

Organs An organ is a group of tissues that work together to perform a complex function. Examples: Heart Eye Brain Stomach Lungs

Organ Systems A group of organs that perform closely related functions.

11 Organ Systems Nervous Respiratory Integumentary Digestive Excretory Skeletal Muscular Circulatory Endocrine Reproductive Lymphatic/Immune

Organism An individual animal, plant or single-celled life form

YouTube Amoeba Sisters Human Body Systems

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Homeostasis The organ systems are working constantly to maintain a controlled, stable environment = Homeostasis. Homeostasis in the body is maintained by feedback loops.

Feedback Loop Positive and negative feedback