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Human Body Systems. LET’S DO THIS!. http://www.parentingpress.com/pics/sock_cvr.jpg. Believe it or not, you are organized!. The main levels of organization are… Cells, Tissues, Organs, Organ Systems, and You (the Organism).
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Human Body Systems LET’S DO THIS!
http://www.parentingpress.com/pics/sock_cvr.jpg Believe it or not, you are organized! • The main levels of organization are… • Cells, Tissues, Organs, Organ Systems, and You • (the Organism).
Levels of OrganizationThe Human Body has several “layers” of organization beginning with the simplest and becoming more complex. http://www.bmb.psu.edu/courses/bisci004a/chem/levels.jpg
Here They Are: Your Body Systems (Part 1). http://www.agen.ufl.edu/~chyn/age2062/lect/lect_19/147a.gif
And Your Body Systems (Part 2) http://www.agen.ufl.edu/~chyn/age2062/lect/lect_19/lect_19.htm
Your digestive system is like a complicated chemical processing plant, and performs many functions.
Your Digestive System… …breaks down food into molecules the body can absorb. …passes these molecules into the blood to be carried throughout the body. …works to eliminate solid wastes from the body.
The Digestive Journey Digestion begins in your mouth with action of your teeth and tongue (mechanical digestion) and your salivary glands (chemical digestion). Salivaryglandsproduce enzymes that are mixed with the food, breaking down the starches. Peristalsis is the muscular action that moves the food through the esophagus and into your stomach after you swallow.
Your Stomach • Pepsin breaks proteins, and other enzymes break down fat. • Your stomach also has a thick coating of mucus to protect it form the acids and to keep it from digesting itself!
By the way, your stomach really does look like a muscular bag!
Your Liver, Pancreas, and Gall Bladder • Liver breaks down many substances and toxins, and produces bile. • a substance that helps break down fat. • Gall bladder- stores bile • Pancreas -produces enzymes that break up complex starches, proteins, and fats.
Your Small & Large Intestines Small intestines- all the nutrients are absorbed leaving undigestible wastes. Large intestines- water is absorbed. Then the wastes are stored in the rectum until they are released by the anus.
It’s a (Intestinal) Gas, Baby! The human large intestine, or colon, is home to many microorganisms, such as the bacterium Escherischia coli (E. coli). Certain foods contain large amounts of carbohydrates that our digestive enzymes cannot break down. Web Sources and Resources: http://www.colorado.edu/epob/academics/web_resources/cartoons/gas.html
The Functions of Your Respiratory System Your respiratory system moves oxygen from the outside environment into your body. It also removes carbon dioxide and water from your body.
The Respiratory and Circulatory Systems: Working Together. Working together the respiratory and circulatory systems form the cardio-pulmonary system, which is an integral connection between the heart and lungs.
Respiratory Disease: Pneumonia Pneumonia is an inflammation or infection of the lungs most commonly caused by a bacteria or virus. Pneumonia can also be caused by inhaling vomit or other foreign substances. Web Sources and Resources www.medimagery.com/Respiration/ lungs.html
Respiratory Disease: Lung Cancer The cancerous lung (right) shows how much damage smoking can do over time to your respiratory system.
Your Integumentary System (It’s Your Skin!)
covers your body and prevents the loss of water. protects the body from injury and infection. regulates body temperatureeliminates wastesgathers information about the environment, and produce vitamin D. organized into two main layers, the epidermis and the dermis.
What is Botox? Botox is the commercial name given to a toxin which is produced from botulism toxin. Botox is injected into a muscle to cause temporary (months) paralysis of that muscle. This helps prevent the appearance of wrinkles.
Your Immune System Your immune system protects you from foreign invaders. Special cells react to each kind of pathogen with a defense targeted specifically at that pathogen. http://www.nobel.se/medicine/laureates/1996/illpres/introduction.html
Your Immune System Has Many Specialized Cells! White blood cells that target specific pathogens are called lymphocytes. There are two major kinds of lymphocytes—T cells and B cells. A major function of T cells is to identify pathogens by recognizing their antigens.
How Your Immune System Works Antigens are molecules that the immune system recognizes as either part of your body, or as coming from outside your body. B cells produce chemicals called antibodies. The white blood cells of the defense system are produced in the marrow of our bones. http://www.nobel.se/medicine/laureates/1996/illpres/introduction.html
The Functions of Your Lymphatic System important to the body's defense mechanisms. filters out organisms that cause disease produces certain white blood cells generates antibodies. distributes fluids and nutrients in the body, because it drains excess fluids and protein so that tissues do not swell up. http://www.acm.uiuc.edu/sigbio/project/updated-lymphatic/node_p2.gif
Types of Muscles Your body has three types of muscle tissue— skeletal muscle, smooth muscle, and cardiac muscle.
Skeletal Muscle Skeletal muscles are attached to the bones of your skeleton. • voluntary muscles provide the force that moves your bones. At the end of a skeletal muscle is a tendon. A tendon is a strong connective tissue that attaches muscle to bone. Note- ligaments connect bones together.
Smooth Muscle Smooth muscles are called involuntary muscles because they work with your unconscious effort.
Cardiac Muscle Cardiac muscles are involuntary muscles found only in the heart. Cardiac muscles do not get tired. A Cardiac Muscle Cell
How Do Muscles Work? Muscles work by contracting, or becoming shorter and thicker. Because muscle cells can only contract, not extend, skeletal muscles must work in pairs. While one muscle contracts, the other muscle in the pair returns to its original length.
Your Circulatory System is Responsible for Delivering and Removing Materials from Every Cell in Your Body Web Sources and Resources Usborne Human Body: Quicklinks
Blood Blood is the fluid of life, transportingoxygen from the lungs to body tissue and carbon dioxide from body tissue to the lungs. Because it contains living cells, blood is alive. Red blood cells and white blood cellsare responsible for nourishing, cleansing, and protecting the body.
Heart Dissections Your Heart is a Very Muscular Organ!
Your Skeleton’s Functions It provides shape and support, enables you to move, protects your internal organs, produces blood cells, and stores certain materials until your body needs them
Cartilage Cartilage provides a smooth surface between bones. As an infant, much of your skeleton was cartilage. By the time you stop growing, most of the cartilage will have been replaced with hard bone tissue.
