Which of the following is a specific defense against disease?
Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid. Also, the normal flow of urine washes out microorganisms that enter the urinary tract.
Which of the following are considered internal defenses?
Internal Defenses. When pathogens enter the body, the innate immune system responds with a variety of internal defenses. These include the inflammatory response, phagocytosis, natural killer cells, and the complement system. White blood cells in the blood and lymph recognize pathogens as foreign to the body.
What are the 2 types of specific immune defenses?
There are two types of specific defense. These include cell-mediated immunity and antibody-mediated immunity. Cell-mediated immunity occurs when T-lymphocytes (T-cells) become activated by exposure to pathogens. Activated T-cells then attack pathogens directly.
What specific defense does a human have to protect from pathogens?
The body’s most important nonspecific defense is the skin, which acts as a physical barrier to keep pathogens out. Even openings in the skin (such as the mouth and eyes) are protected by saliva, mucus, and tears, which contain an enzyme that breaks down bacterial cell walls.
What is a specific defense against disease?
Specific defense (sometimes called adaptive immunity) recognizes and coordinates attacks against specific pathogens. The system can also remember pathogens and produce a powerful response the next time a pathogen enters the body. There are two types of specific defense.
What is the best defense against disease?
According to the Centers for Disease Control and Prevention, Frequent handwashing is one of the best ways to prevent the spread of infectious diseases. Microbes are everywhere. They are on surfaces in your home, in your school, at your work, as well as on your body, including your hands.
What are 5 defenses the body has against disease?
These include your skin, tears, mucus, cilia, stomach acid, urine flow, ‘friendly’ bacteria and white blood cells called neutrophils. Pathogenic (disease-causing) microorganisms must make it past this first line of defence. If this defence is broken, the second line of defence within your body is activated.
What is an example of a specific defense?
It may be a toxin (injected into the blood by the sting of an insect, for example), a part of the protein coat of a virus, or a molecule unique to the plasma membranes of bacteria, protozoa, pollen, or other foreign cells.
What are the 3 body defenses?
The Immune System has 3 Lines of Defense Against Foreign Pathogens:
- Physical and Chemical Barriers (Innate Immunity)
- Nonspecific Resistance (Innate Immunity)
- Specific Resistance (Acquired Immunity)
Which cells are part of the internal immune system?
The cells of the immune system can be categorized as lymphocytes (T-cells, B-cells and NK cells), neutrophils, and monocytes/macrophages. These are all types of white blood cells. The major proteins of the immune system are predominantly signaling proteins (often called cytokines), antibodies, and complement proteins.
What types of defenses does your body have?
Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid. Also, the normal flow of urine washes out microorganisms that enter the urinary tract. to identify and eliminate organisms that get through the body’s natural barriers.