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A&P Unit 2
Mechanisms of Immunity in Animals
| Term | Definition | Veterinary Relevance |
|---|---|---|
| Active Immunity (AK-tiv ih-MYOO-nuh-tee) | Simple: Long-lasting protection the body creates itself Precise: Durable immune protection developed when the body's immune system produces specific antibodies and memory cells after pathogen exposure or vaccination | Explaining why vaccines take time to work and the importance of boosters. |
| Adaptive Immunity (uh-DAP-tiv ih-MYOO-nuh-tee) | Simple: Specific immune defense that learns and remembers Precise: Immune response involving B and T cells that develops memory for rapid defense against known antigens | Educating clients on puppy vaccine series and immune development. |
| Anatomical Barriers (an-uh-TOM-ih-kul BAIR-ee-ers) | Simple: Structures that block pathogen entry Precise: Physical defenses such as intact skin and mucous membranes that prevent infection | Assessing surgical sites and educating on wound care. |
| Antibody (AN-tih-bod-ee) | Simple: Proteins that fight specific germs Precise: Y-shaped immunoglobulins that bind to antigens to neutralize or mark them | Running diagnostic tests like FeLV/FIV and explaining vaccine responses. |
| Antigen (AN-tih-jen) | Simple: Triggers for immune responses Precise: Foreign substances that bind antibodies or activate immune cells | Performing antigen-based tests such as parvo or FeLV screening. |
| Antigen Presentation (AN-tih-jen prez-en-TAY-shun) | Simple: Showing antigens to immune cells Precise: Display of processed antigens on MHC molecules to activate T cells | Explaining how vaccines create immune responses. |
| B Lymphocytes/B Cells (bee LIM-foh-sytes) | Simple: Cells that make antibodies Precise: Bone marrow–derived lymphocytes that become plasma or memory cells | Describing how vaccines stimulate antibody production. |
| B-Cell Activation (bee-sel ak-tih-VAY-shun) | Simple: B cells start making antibodies Precise: Triggered by antigen binding and T cell help, leading to plasma cell development | Explaining why booster shots provide faster, stronger immunity. |
| Basophil (BAY-soh-fill) | Simple: White blood cell involved in allergies Precise: Histamine-releasing granulocyte in hypersensitivity reactions | Monitoring CBCs for allergic responses or parasites. |
| Bone Marrow (bohn MAIR-oh) | Simple: Soft tissue making blood cells Precise: Primary site for blood cell production and immune cell origin | Interpreting CBCs and identifying marrow suppression. |
| Cell-Mediated Immunity (sel-MEE-dee-ay-ted ih-MYOO-nuh-tee) | Simple: T cell-based protection Precise: Immune defense via cytotoxic and helper T cells, independent of antibodies | Supporting care for viral and intracellular infections. |
| Chemotaxis (kee-moh-TAK-sis) | Simple: Cells moving toward infection Precise: Directed migration of immune cells along chemical gradients | Explaining inflammation signs like swelling and redness. |
| Colostrum (kuh-LOSS-trum) | Simple: First milk rich in antibodies Precise: Newborn's early nutrient source containing protective immunoglobulins | Educating clients on importance of early nursing for immunity. |
| Complement System (KOM-pluh-mint) | Simple: Proteins that boost immune attacks Precise: Cascade of proteins that enhance phagocytosis and cell lysis | Monitoring patients with recurrent infections or autoimmune concerns. |
| Complete Blood Count/CBC (kuh-MPLEET bluhd kownt) | Simple: Blood test of cell levels Precise: Measures red cells, white cells, and platelets to evaluate immune and overall health | Running daily lab tests, preparing smears, and interpreting infection signs. |
| Cytology (sy-TOL-oh-jee) | Simple: Study of cells under a microscope Precise: Analysis of cell shape and structure for disease detection | Preparing and examining samples from wounds, fluids, and aspirates. |
| Cytotoxic (SY-toh-TOX-ik) | Simple: Cell-killing Precise: Describes immune actions or agents that destroy cells directly | Handling chemo agents safely and monitoring for immune suppression. |
| Cytotoxic T Cell/CD8+ (SY-toh-TOX-ik tee sel) | Simple: Killer T cells Precise: T lymphocytes that destroy infected or abnormal cells via toxic granules | Supporting cancer patients and understanding T cell immunity. |
| Dendritic Cell (den-DRIT-ik sel) | Simple: Cells that show antigens to immune cells Precise: Antigen-presenting cells that process and present antigens to T cells | Explaining how vaccines initiate immune responses. |
| Eosinophil (ee-oh-SIN-oh-fill) | Simple: White blood cell that fights parasites and allergies Precise: Granulocyte involved in parasitic defense and allergic reactions | Identifying eosinophilia for parasite or allergy diagnosis. |
| Fever (FEE-ver) | Simple: Elevated body temperature Precise: Hypothalamic-mediated temperature increase that enhances immunity and limits pathogen growth | Accurately measuring temperatures and recognizing fever patterns. |
| Helper T Cell/CD4+ (HEL-per tee sel) | Simple: T cells that coordinate immune responses Precise: CD4+ lymphocytes that activate B cells and macrophages | Understanding immunodeficiency like FIV and monitoring care. |
| Humoral Immunity (HYOO-muh-rull ih-MYOO-nuh-tee) | Simple: Antibody-based defense in body fluids Precise: Circulating antibodies target extracellular pathogens | Explaining how vaccines generate circulating antibody protection. |
| Hypersensitivity (HY-per-sen-sih-TIV-ih-tee) | Simple: Overactive immune reaction (allergy) Precise: Exaggerated immune responses that can damage tissues | Recognizing and responding to vaccine-related anaphylaxis. |
| Immune Memory (ih-MYOO-n MEM-oh-ree) | Simple: The immune system remembers past infections Precise: Memory B and T cells enable faster, stronger responses upon re-exposure | Counseling on booster importance and long-term protection. |
| Immune System (ih-MYOO-n SIS-tem) | Simple: Body's defense network Precise: Integrated cells, tissues, and molecules that recognize and defend against pathogens | Teaching clients how health practices support immunity. |
| Immunity (ih-MYOO-nuh-tee) | Simple: Protection against disease Precise: Resistance to disease via innate or acquired mechanisms | Differentiating maternal, vaccine-derived, and natural immunity. |
| Immunocompetent (ih-MYOO-noh-KOM-pih-tent) | Simple: Having a functioning immune system Precise: Capable of mounting effective immune responses and memory formation | Anticipating normal vaccine responses in healthy patients. |
| Immunocompromised (ih-MYOO-noh-KOM-proh-myzd) | Simple: Weakened immune system Precise: Reduced immune function from disease, drugs, or age | Applying infection control for high-risk patients. |
| Immunoglobulin (ih-MYOO-noh-GLOB-yoo-lin) | Simple: Scientific name for antibodies Precise: Family of antibody proteins with distinct immune roles | Recognizing immunoglobulin levels in diagnostics. |
| Innate Immunity (ih-NAYT ih-MYOO-nuh-tee) | Simple: Inborn defenses present at birth Precise: Non-specific barriers and cells that provide immediate protection | Assessing first-line defenses like skin and mucous membranes. |
| Left Shift (left shift) | Simple: More immature white blood cells Precise: Increased immature neutrophils indicating acute infection | Identifying urgent bacterial infections on CBCs. |
| Lymph Nodes (limf nohdz) | Simple: Small filters that trap germs Precise: Lymphoid organs that filter lymph and initiate immune responses | Palpating nodes and documenting abnormalities. |
| Lymphadenopathy (limf-AD-eh-NOP-uh-thee) | Simple: Swollen lymph nodes Precise: Abnormal node enlargement due to infection, inflammation, or neoplasia | Measuring and reporting node changes. |
| Lymphatic System (lim-FAT-ik SIS-tem) | Simple: Network that drains fluid and supports immunity Precise: Vessels and nodes that circulate lymph and house immune cells | Understanding drainage after surgery and role in infection control. |
| Lymphocyte (LIM-foh-syte) | Simple: White blood cell for specific immunity Precise: B, T, and NK cells mediating adaptive responses | Interpreting lymphocyte changes on CBCs. |
| Macrophage (MAK-roh-fayj) | Simple: Large cell that eats pathogens Precise: Phagocytic cells that present antigens and coordinate inflammation | Identifying macrophages on cytology samples. |
| Mucous Membranes (MYOO-kus MEM-braynz) | Simple: Moist linings that trap pathogens Precise: Epithelial surfaces with mucus and antimicrobial substances | Assessing mucous membranes for hydration and health. |
| Natural Killer Cell/NK (NAT-ur-al KILL-er sel) | Simple: Cells that kill virus-infected and abnormal cells Precise: Innate lymphocytes recognizing stressed or abnormal cells without prior sensitization | Supporting viral and cancer patient care. |
| Normal Flora (NOR-mal FLOR-ah) | Simple: Beneficial microbes living on the body Precise: Commensals that compete with pathogens and support immune function | Educating on antibiotic effects and probiotic use. |
| Opsonization (op-soh-nih-ZAY-shun) | Simple: Coating germs for easier destruction Precise: Antibody or complement coating that enhances phagocytosis | Explaining how vaccines and immune cells work together. |
| Pathogen (PATH-oh-jen) | Simple: Disease-causing organism Precise: Infectious agent capable of causing disease in a host | Applying infection control and risk assessment. |
| Phagocytosis (FAG-oh-sy-TOH-sis) | Simple: Cell eating and destroying germs Precise: Engulfment and digestion of particles by immune cells | Observing active immune response on cytology. |
| Plasma Cell (PLAZ-mah sel) | Simple: Antibody-producing B cells Precise: Differentiated B lymphocytes specialized for antibody secretion | Recognizing plasma cells in diagnostics. |
| Regulatory T Cell (REG-yoo-lah-tor-ee tee sel) | Simple: Cells that prevent immune overactivity Precise: T cells suppressing immune responses for homeostasis | Supporting management of immune-mediated disease. |
| Skin Integrity (skin in-TEG-rih-tee) | Simple: Healthy, intact skin barrier Precise: Functional epidermis and dermis preventing pathogen entry and fluid loss | Assessing pre-surgery and wound care for infection prevention. |
| Spleen (spleen) | Simple: Organ filtering blood and storing immune cells Precise: Secondary lymphoid organ involved in blood filtration and immune surveillance | Noting spleen size and characteristics on imaging. |
| Splenomegaly (spleen-oh-MEG-uh-lee) | Simple: Enlarged spleen Precise: Abnormal enlargement due to immune activity, congestion, or disease | Documenting physical findings and assisting diagnoses. |
| T Lymphocytes/T Cells (tee LIM-foh-sytes) | Simple: White blood cells coordinating and attacking infections Precise: Thymus-matured lymphocytes with helper, cytotoxic, and regulatory roles | Understanding T cell involvement in immune responses. |
| T-Cell Activation (tee-sel ak-tih-VAY-shun) | Simple: Stimulating T cells to respond Precise: Antigen recognition and cytokine-mediated transformation into effector cells | Monitoring vaccine responses in immunocompromised patients. |
| Three Lines of Defense (three lynz uhv dih-FENS) | Simple: Body's layered immune protection Precise: Physical/chemical barriers, innate responses, and adaptive immunity working together | Explaining how multiple defenses promote overall health. |
| Tonsils (TON-sils) | Simple: Lymphoid tissue in the throat that traps pathogens Precise: Aggregated lymphoid nodules sampling antigens and initiating local immune responses | Assessing tonsil size during exams and recognizing infection. |
| White Blood Cells/Leukocytes (LOO-koh-sytes) | Simple: Blood cells that fight infection Precise: Nucleated cells including granulocytes, lymphocytes, and monocytes that mediate immune responses | Performing WBC counts and differentials to detect infections. |
Created by:
agoode2082!
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