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Chapter 13 Section 1 Get book and Open to page 508. Anticipatory Set. Organ Systems Homeostasis. Big Idea. California Standards. Science Standard 7.5.a:
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Organ Systems Homeostasis Big Idea
California Standards Science Standard 7.5.a: Students know that plants and animals have levels of organization for structure and function, including cells, tissues, organs, organ systems, and the whole organisms. • Plants and animals have levels of organization for structure and function.
Input • Cells: the smallest units of organization in the body. • Connective Tissue: provides support for your body and connects all of its parts. • Muscle Tissue: allows your body to move (can contract and shorten) • Nervous Tissue: directs and controls movement( carries electrical messages back and forth between the brain and other parts)
Input • Epithelial tissue: the tissue that covers your body inside and out. • Homeostasis: the body’s tendency to keep an internal balance. • Pathogens: disease causing bacteria and viruses. • Stress: your body’s reaction to potentially threatening, challenging, or disturbing events.
Input How the body is organized • The levels of organization in the human body consist of cells, tissues, organs, and organ systems. Cells Tissues Organs Smallest unit of organization Organ Systems Largest unit of organization
InputTissues • the second largest unit of organization in your body (4 basic types of tissue) • Muscle tissue- contract and shorten • Nervous tissue – carries electrical charges to brain and other parts • Connective tissue – provides support • Epithelial tissue – Cover your body inside and out. (e.g. the skin provides protection)(e.g. lining of the digestive system allows you to digest and absorb nutrients from food.
InputOrgans and Organ systems • The Integumentary System • Made up of you skin, hair, and nails. • Cells and tissue work together to provide a barrier from disease causing bacteria and viruses. • Skin also helps regulate body temperature. • Also helps the excretory system remove waste (sweating) • Works with the nervous system to give you info about your environment. • The human body has 11 organ systems
InputOrgans and Organ systems • All systems of the body work together to maintain homeostasis • HOMEOSTASIS IS THE PROCESS BY WHICH AN ORGANISM’S INTERNAL ENVIRONMENT IS KEPT STABLE IN SPITE OF CHANGES IN THE EXTERNAL ENVIRONMENT • The human body has 11 organ systems
Finish the Front of Notes on your own • Across Discipline: Language Arts (RC 2.2 (take notes on the 11 body systems. e.g what organs are involved, how does the system help maintain homeostasis.) • Patterns: Draw and label one of the 11 body systems.(511-515) • Question: Write a question and answer it. • Summary: Write a summary of what you have learned.
InputOrgans and Organ systems • The Skeletal System • Made up of your bones and connective tissues. • Supports the body and gives structure. • Protects your body’s organs • Connective Tissues attaches bones and form joints that allow movement • The Muscular System • work to move your body by pulling your skeleton • Voluntary Muscles – work when you want them to • Involuntary Muscles – work by themselves • Your muscles and bones are also know as the Musculoskeletal system.
InputOrgans and Organ systems • The Circulatory System • Carries food and oxygen to all the cells of your body. • Powered by the pumping of your heart. • Arteries – take blood away from the heart • Veins – carry blood toward the heart • Capillaries – smallest blood vessels connect arteries and veins.
InputOrgans and Organ systems • The Respiratory System • lungs are the main organs in the respiratory system • Takes in oxygen and disposes carbon dioxide • Delivers oxygen to the blood via circulatory system • The Digestive System • helps breakdown food into small molecules the body uses
InputOrgans and Organ systems • The Excretory System • Removes waste from you blood stream • Kidneys are the major organ in this system • Each kidney contains 1 million nephrons that filter waste. • The Immune System • Protects your body from disease-causing bacteria and viruses called PATHOGENS. • Specialized white blood cells target and destroy these PATHOGENS.
InputOrgans and Organ systems • The Nervous System • takes the information from your environment and from within our body. • Processes information and demands the body to respond • Includes the brain and spinal cord • Nerve cells reach form spinal cord to all parts of the body • The Endocrine System • helps regulate the activities of your organs and organ systems.( releasing hormones) • Consists of Thyroid gland, Hypothalamus, Parathyroid glands, Thymus gland, Pancreas, Adrenal glands.
Input HOMEOSTASIS • All systems of the body work together to maintain homeostasis • HOMEOSTASIS IS THE PROCESS BY WHICH AN ORGANISM’S INTERNAL ENVIRONMENT IS KEPT STABLE IN SPITE OF CHANGES IN THE EXTERNAL ENVIRONMENT