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Immune System

The part of the lymphatic system that gives us our immunity.

Pathogenic Bacteria

Bacteria that produces sinus infections, infected cuts, etc.

Pathogenic Fungi

Cause athlete's foot, thrush on the tongue, vaginal yeast infections, etc.

Parasites

Examples: pinworms, round worms, tapeworms, etc.

Viruses

A chunk of either DNA or RNA that is wrapped around its own protein coat.

Cancers

Our own cells that have been damaged and can no longer control their functions.

Toxins

Harmful chemicals that are foreign to the body.

Innate Immunity

An immune response that is the same regardless of the pathogen or toxin encountered.

Acquired Immunity

An immune response targeted at a specific pathogen or toxin.

Nonspecific Immunity

Another word for innate immunity; it does not seek out a specific pathogen or toxin but instead just tries to protect us from everything.

Specific Immunity

Another word for acquired immunity.

Gastric Juice

A chemical found in that stomach that kills off most pathogens through swallowing our own mucus (nonspecific immunity).

Lysozyme

An enzyme found in tears; it breaks cell walls and kills bacteria that gets in our eyes.

Pinkeye

The most common bacterial infection of the eye.

Urine

A nonspecific immunity, urine washes out the urinary tract, protecting it from bacterial infection.

Cervical Mucus

An combination of specific and nonspecific immunity against infection.

Symbiotic Organisms

The first line of innate immunity; they "squeeze out" any pathogens or toxins that happen to make it passed the gastric juice in the stomach.

Complement

A series of 20 plasma proteins activated by foreign cells or antibodies to those cells. They 1) lye bacteria, 2) promote phagocytosis, and 3) promote inflammation.

Interferon

Proteins secreted by cells infected with a virus. These proteins stimulate nearby cells to produce virus-fighting substances.

Antibacterial

"Involved with fighting cells"

Antiviral

"does nothing against living cells"

White Blood Cells

Non-specific; attack potentially any bacterium or virus.

Natural Killer Cells

Lymphocytes that attack tumor cells or virus-infected cells.

Inflammation

Swelling up of an infection; results in an increased blood flow to the injury.

Vasodilation

Causes inflammation; blood vessels near an infection or injury get larger in order to increase blood flow.

Local Inflammation

Happens when infections are being fought in one are of the body.

Systemic Inflammation

Happens when infections are being fought all over the body.

Pyrogens

Chemicals which promote fever by acting on the hypothalamus.

Humoral Immunity

Immunity which comes from antibodies in blood plasma.

Cell-Mediated Immunity

Immunity which comes from the actions of T-lymphocytes.

T-Lymphocytes

Responsible for cell-mediated immunity.

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