Glencoe Health 2005.pdf

Pathogens that are introduced into the body to

Info icon This preview shows pages 644–647. Sign up to view the full content.

View Full Document Right Arrow Icon
pathogens that are introduced into the body to stimulate an immune response . In this way vaccines cause your body to produce antibodies without actually causing the disease. Today, more than 20 serious human diseases can be prevented by vaccination. Active immunity to many diseases can last a lifetime, but some immunizations need to be repeated to maintain immunity. Passive Immunity In active immunity your body produces its own antibodies. You also can be protected from pathogens by passive immunity —receiv- ing antibodies from another person or an animal. This immunity is short-lived; it usually lasts only weeks to months. Natural passive immunity occurs when antibodies pass from mother to child during pregnancy or while nursing. Artificial passive immunity results from the injection of antibodies produced by an animal or a human who is immune to the disease. vaccine antibody 631 Lesson 2 Preventing Communicable Diseases Is there a vaccine to prevent colds? Developing a vaccine to pre- vent colds is difficult. More than 200 different viruses can cause the common cold. This means that more than 200 different vaccines would have to be developed to prevent this illness.
Image of page 644

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Care of the Immune System our health behaviors can greatly reduce your chance of con- Y tracting a disease or getting an infection. When you keep your body strong and healthy, your immune system is better able to fight off pathogens. Taking positive steps in every area of your health will give you the boost needed to reduce your chance of illness. Follow a sensible eating plan to maintain your overall health and keep your immune system strong. Include whole grains and nutrient-rich foods such as fruits and vegetables, and reduce intake of fats, sugar, and salt. Drink six to eight 8-ounce glasses of water each day. Get plenty of rest. Fatigue reduces the effectiveness of the immune system. To function at their best, teens should average nine hours of restful sleep each night. 632 Chapter 24 Communicable Diseases I MMUNITY AND THE L YMPHATIC S YSTEM The lymphatic system circulates antibodies to give you protection against many diseases. This protection can last throughout your life. The lymphatic system is part of your immune system. It includes your tonsils, lymph nodes, and a network of vessels, similar to blood vessels, that transport lymph, or tissue fluid. Lymphocytes are produced by lymph nodes. These nodes occur in groups and are concentrated in the head and neck, armpits, chest, abdomen, and groin. Lymph nodes can become enlarged when your body is fighting an infection because of the increased number of lymphocytes. If swelling lasts for three days, see your health care professional.
Image of page 645
Get about an hour of physical activity each day. This is especially important to relieve stress.
Image of page 646

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 647
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern