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The human immune system

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hasanahatesscience's version from 2015-11-12 02:08

Section 1

Question Answer
what is the purpose of the human immune system?to protect the body from FOREIGN PARTICLES (bacteria,viruses and parasites)
dead outer layer of skin known as the epidermis forms a shield against invaders and creates chemicals that kill potential invaders.
mucus and cilabacteria and viruses stick to the MUCUSING LINING in NOSE AND THROAT
hair like structures called ciliasweep this muscus into the throat for coughing or swallowing
stomach acidswallowed bacteria is BROKEN DOWN by STRONG ACIDS IN STOMACH
salivacontains a lot of chemicals that break down bacteria
memorize

Section 2

Question Answer
white blood cells (WBC)normally circulate throughout blood, will enter body's tissues if invaders are found/detected
phagocytesthese WBC are responsible for eating FOREIGN PARTICLES by ENGULFING THEm
once engulfed, the phagocyte breaks the foreign particles apart in organelles called LYSOSOMES
T cellsoften called NATURAL KILLER CELLs, recognize INFECTED HUMAN AND CANCER CELLS
t cells will attack infectedcells, quickly killing them and then continue to search for more cells to kill.
what is the inflammatory response?injured body cells release chemicals called HISTAMINES, which begin the INFLAMMATORY RESPONSE (Wound)
the capillaries willwill disease
pyrogens released and thetemperature will rise
pain receptors will activate
White blood cells will flockto the infected area
memorize

Section 3

Question Answer
antibodiesmost infections never make it past the FIRST and SECOND levels of defense.
infections that make it past the first and second levels of defensetrigger production and release of antibodies
each antibody binds only to one specific binding, known as an ANTIGEN
memorize

Section 4

Question Answer
immunityRESISTANCE to DISEASE, PREVENTS ORGANISM FROM HARMFUL SUBSTANCE.
there are two types active and passive
active immunity iswhen YOU PRODUCE ANTIBODIES YOUR BODY has been EXPOSED TO the ANTIGEN in the PASS EITHER THROUGH A)exposure to disease B)vaccination
vaccineantigens are IMMEDIATELY introduced into IMMUNE SYSTEM to produce IMMUNITY
vaccines have eradicated several diseases such as small pox and polio
passive immunityyou do not produce the antibodies
in passive immunity the motherwill pass immunities on to her baby during pregnancy.
memorize

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