Chapter 13 Section 1Get book and Open to

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Anticipatory Set

Organ Systems Homeostasis

Big Idea

California StandardsScience 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.

InputCells: 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)

InputEpithelial 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

Organ Systems

Smallest unit of organization

Largest unit of organization

Input Tissues the second largest unit of organization in your

body (4 basic types of tissue)1. Muscle tissue- contract and shorten2. Nervous tissue – carries electrical charges to

brain and other parts3. Connective tissue – provides support 4. 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.

Input Organs and Organ systems The human body has 11 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.

Input Organs and Organ systems The human body has 11 organ systemsAll systems of the body work together to maintain homeostasisHOMEOSTASIS IS THE PROCESS BY WHICH AN ORGANISM’S INTERNAL ENVIRONMENT IS KEPT STABLE IN SPITE OF CHANGES IN THE EXTERNAL ENVIRONMENT

Finish the Front of Notes on your ownAcross 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.

Input Organs 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 skeletonVoluntary Muscles – work when you want them toInvoluntary Muscles – work by themselvesYour muscles and bones are also know as the

Musculoskeletal system.

Input Organs 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 heartVeins – carry blood toward the heartCapillaries – smallest blood vessels connect

arteries and veins.

Input Organs and Organ systemsThe Respiratory System

lungs are the main organs in the respiratory system

Takes in oxygen and disposes carbon dioxideDelivers oxygen to the blood via circulatory system

The Digestive System helps breakdown food into small molecules the

body uses

Input Organs and Organ systemsThe Excretory System

Removes waste from you blood streamKidneys are the major organ in this systemEach 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.

Input Organs and Organ systemsThe 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 cordNerve 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 HOMEOSTASISAll systems of the body work together to

maintain homeostasisHOMEOSTASIS IS THE PROCESS BY WHICH

AN ORGANISM’S INTERNAL ENVIRONMENT IS KEPT STABLE IN SPITE OF CHANGES IN THE EXTERNAL ENVIRONMENT