abeka health 9 section 6.1
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Last updated 11:57 PM on 4/2/23
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24 Terms
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immunology
the study of the **immune system** (system that protects the body from foreign invaders)
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immune system
system that protects the body from foreign invaders
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pathogen
any organism (bacteria, fungi, virus, etc.) that can cause a disease
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white blood cells (leukocytes)
the most important part of the immune system
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phagocytes
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WBC that attack and dispose of pathogens
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lymphocytes
fight infected cells; secrete germ-fighting antibodies in the bloodstream
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histamine
a chemical “alarm” issued when a pathogen invades the body; causes inflammation of nearby tissue
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antibodies
protein molecules that travel to the bloodstream
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antibodies
can fight pathogens by inactivating them or marking them for destruction
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lymphatic system
the chambers of the body that transport the white blood cells throughout the body
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tissue fluid
a liquid that helps maintain water content throughout the body
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lymph capillaries
**fill in the blank**
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excess fluid will pass through small tubes called ________ _____________
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excess fluid will pass through small tubes called ________ _____________
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lymph
**fill in the blank**
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once tissue fluid enters the capillaries, it's called _________
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once tissue fluid enters the capillaries, it's called _________
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lymph
**fill in the blank**
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pathogens in the body are picked up and carried by ________
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pathogens in the body are picked up and carried by ________
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1. vessels
2. ducts
**fill in the blank**
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body movement forces lymph to move throughout the body in **lymph __________** and **lymph _______**
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body movement forces lymph to move throughout the body in **lymph __________** and **lymph _______**
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lymph nodes
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small organs scattered throughout the lymphatic system; “bases” for WBC
small organs scattered throughout the lymphatic system; “bases” for WBC
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nodes
**fill in the blank**
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pathogens are cleansed from lymph when it passes through the _______
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pathogens are cleansed from lymph when it passes through the _______
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tonsils and adenoids
lymph tissue in the throat
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peyer’s patches
lymph tissue in the intestines
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spleen
largest lymph organ of the body
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fever
high body temperature that prevents pathogens from multiplying and speeds up white blood cells
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bone marrow
produces WBC
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liver
filters toxins from the body; can fail due to alcohol consumption
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skin
**fill in the blank**
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unbroken ________ prevents the majority of pathogens from entering the body
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unbroken ________ prevents the majority of pathogens from entering the body
Note 
Flashcards (30)