Anatomy and Physiology /HOSA: Med Term Lymphatic/Immune Part 1
HOSA: Med Term Lymphatic/Immune Part 1
This deck covers key terms and concepts related to the lymphatic and immune systems, including definitions of various cells, fluids, and processes.
purpose of lymphatic system
absorb fat & fat-soluble vitamins thru lacteals, remove waste & destroy pathogens, return filtered lymph to veins
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Key Terms
Term
Definition
purpose of lymphatic system
absorb fat & fat-soluble vitamins thru lacteals, remove waste & destroy pathogens, return filtered lymph to veins
define LEUKOCYTE
white blood cell
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define MUCOUS
adjective describing specialized membranes that line body cavities
define MUCUS
noun; fluid secreted by mucous membranes
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define LACTEALS
specialized structures that absorb fats that can’t go thru blood & transforms them to be put in blood
describe INTERSTITIAL FLUID
plasma from arterial blood from arterioles to capillaries flowing into spaces between cells of tissues that deliver nutrients, O2, & hormones & bring ...
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| Term | Definition |
|---|---|
purpose of lymphatic system | absorb fat & fat-soluble vitamins thru lacteals, remove waste & destroy pathogens, return filtered lymph to veins |
define LEUKOCYTE | white blood cell |
define MUCOUS | adjective describing specialized membranes that line body cavities |
define MUCUS | noun; fluid secreted by mucous membranes |
define LACTEALS | specialized structures that absorb fats that can’t go thru blood & transforms them to be put in blood |
describe INTERSTITIAL FLUID | plasma from arterial blood from arterioles to capillaries flowing into spaces between cells of tissues that deliver nutrients, O2, & hormones & bring waste & protein when leaving; 90% returning fluid |
interstitial fluid is also known as | intercellular or intertissue fluid |
describe LYMPH | 10% return fluid that is not interstitial fluid; clear, faintly yellow & watery w/electrolytes & proteins; remove dead cells, debris, & pathogen |
define LYMPHATIC CIRCULATORY SYSTEM | upward movement, fluid filtered by lymph nodes & depend on pumping motion of muscles to move liquid |
aka: lymph | lymphatic fluid |
aka: lymphatic circulatory system | secondary circulatory system |
describe LYMPHATIC CAPILLARIES | microscopic, sealed on 1 side & tubes near surface; separate to bring lymph & close to push up & forward |
define LYMPHATIC VESSELS | vessels deep in tissue w/valves to prevent backflow & form ducts to drain |
describe RIGHT LYMPHATIC DUCT | right side of head & neck, upper right body quadrant & right arm; empty into right subclavian vein |
thoracic duct | largest lymphatic vessel; left side of head & neck, LUG, left arm, lower trunk, legs’ empty into left subclavian vein |
describe LYMPH NODES | lymphocytes destroy harmful stuff in lymph & filter to rejoin circulation; 400-700 in body in 3 groups (cervical, axillary, & inguinal) |
define LYMPHOCYTES | leukocytes formed in bone marrow as stem cells that defend against antigens |
aka: lymphocytes | lymphoid cells |
define NATURAL KILLER CELLS | lymphocytes kill cancer/infected cells |
define B CELLS | lymphocytes deal w/humoral immunity & immunoglobulins |
aka: b cells | b lymphocytes |
define HUMORAL IMMUNITY | turn plasma cells & secrete immunoglobulins |
define IMMUNOGLOBULINS | antibody destroy antigen & then turns into plasma cell to secrete antibodies |
define T CELLS | help in cell-mediated immunity |
aka: t cells | T lymphocytes |
describe CYTOKINES | group of proteins released by T-cells to act as intracellular signals for immune response; types = cytotoxic, helper, natural killer |
define INTERFERONS | made in response to antigens to activate immune system, slow/stop virus multiplication, & signal cells to increase defense |
define INTERLEUKINS | direct B & T cells to divide & proliferate (+ other stuff) |
components of cell-mediated immunity | interleukins, interferons, cytokines |
define CYTOTOXIC CELLS (T8) | attach to antigens & destroy |