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Understanding Autoimmune Disorders: Mechanisms and Examples Study Guide

This guide explains anemia, a condition where the blood's oxygen-carrying capacity is reduced. It details the common clinical symptoms such as pallor, fatigue, and shortness of breath. The guide also elaborates on the three main mechanisms leading to anemia: decreased hemoglobin (e.g., iron deficiency, anemia of chronic disease), decreased hematocrit (e.g., blood loss, pernicious anemia, aplastic anemia), and abnormal hemoglobin (e.g., sickle cell disease).

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Hemostasis and Blood Typing Processes

Hemostasis and Blood Typing Processes

Hemostasis minimizes blood loss to maintain blood pressure, tissue oxygenation and electrolyte balance through stages including vascular spasm, platelet plug formation, coagulation, clot retraction, and thrombolysis.

  • Hemostasis
  • Vascular Spasm
  • Platelet plug formation
  • Coagulation
  • Clot retraction
  • Thrombolysis
  • Vasoconstriction
  • Thrombus
  • Embolus

Mechanisms of Platelet Plug Formation and Coagulation

  • Platelet plug formation
  • Vascular spasm
  • Coagulation
  • Clot retraction
  • Thrombolysis
  • Von Willebrand factor (vWF)
  • Collagen fibers
  • Platelet activation
  • Platelet aggregation
  • Fibrinogen
  • Endothelial cells

Coagulation Cascade and Clotting Factors

The coagulation cascade involves intrinsic, extrinsic, and common pathways where clotting factors convert fibrinogen into fibrin.

  • Coagulation cascade
  • Intrinsic pathway
  • Extrinsic pathway
  • Common pathway
  • Fibrinogen conversion to fibrin
  • Clotting factors
  • Tissue factor
  • Platelet plug
  • Vitamin K synthesis

Blood Clotting and Coagulation Pathways

This topic details the process of blood clotting, including the common pathway that converts prothrombin into thrombin, leading to fibrin formation. It also covers clot retraction and thrombolysis.

  • Blood clotting
  • Coagulation
  • Common pathway
  • Prothrombin
  • Fibrinogen
  • Clot retraction
  • Thrombolysis
  • Platelet plug
  • Hemostasis

Antibody Mediated Immunity and Antibody Functions

Immune System and Antibody Mediated Immunity

This lecture covers active and passive immunity, vaccinations, autoimmune diseases, allergies, antigens, antibodies, and the processes of antibody-mediated immunity.

  • Active and passive immunity
  • Vaccinations
  • Autoimmune diseases
  • Allergies
  • Systemic anaphylaxis
  • Antigens
  • Antibodies
  • Humoral immunity
  • B cells
  • Immunoglobulins
  • B cell receptors
  • Clonal selection
  • B cell activation
  • Antibody production
  • Immunological memory
  • Bone marrow
  • Spleen
  • Lymph nodes
  • Class II MHC molecules
  • Helper T cells

Antibody Structure and Serology Functions

Serology is the study of the structure and function of antibodies including IgG, IgA, IgM, IgE, and IgD.

  • Serology
  • Antibody structure
  • Peptide chains
  • Heavy and light chains
  • Constant and variable regions
  • Antigen binding sites
  • Complement-binding sites
  • IgG
  • IgA
  • IgM
  • IgD
  • Opsonization
  • Neutralization
  • Complement fixation
  • Agglutination
  • B cell receptor
  • Parasitic pathogens
  • Allergens
  • Histamine release

Functions of Secreted Antibodies

Secreted antibodies integrate adaptive and innate immunity through processes including agglutination, precipitation, opsonization, neutralization, complement activation, and stimulation of inflammation.

  • Agglutination
  • Precipitation
  • Opsonization
  • Neutralization
  • Complement activation
  • Stimulation of inflammation
  • Phagocytosis
  • IgG
  • IgA
  • IgM
  • Mast cells
  • Basophils

Introduction to the Immune System

Introduction to the Immune System

Cells and proteins defend the body against pathogens through innate and adaptive immunity.

  • Innate immunity
  • Adaptive immunity
  • First, second and third lines of defense
  • Phagocytosis
  • Inflammation
  • B and T lymphocytes
  • Macrophages
  • Antigen-presenting cells
  • Cell-mediated immunity
  • Immunological memory
  • Lymphoid organs
  • Dendritic cells
  • Antimicrobial proteins

Phagocytes and Non-Phagocytes of Innate Immunity

Phagocytes of innate immunity include macrophages, neutrophils, eosinophils and dendritic cells that ingest particles, while non-phagocytes include natural killer cells, basophils and mast cells.

  • Macrophages
  • Neutrophils
  • Eosinophils
  • Dendritic cells
  • Natural killer cells
  • Basophils
  • Mast cells
  • Innate immunity
  • Antigen presentation
  • Inflammation

Antimicrobial Proteins Complement and Cytokines

Antimicrobial proteins including complement and cytokines enhance immune responses through enzymatic reactions and pathways.

  • Complement
  • Classical pathway
  • Alternative pathway
  • C3b activation
  • Cell lysis
  • Membrane attack complex (MAC)
  • Enhanced inflammation
  • Neutralized viruses
  • Enhanced phagocytosis
  • Opsonization
  • Clearance of immune complexes
  • Cytokines

Structures and Functions of the Lymphatic System

Structures and Functions of Lymphatic System

Lymphatic system organs and tissues work with immune system through lymphatic vessels, lymphatic tissue, and lymphoid organs.

  • Lymphatic vessels
  • Lymphatic tissue
  • Lymphoid organs
  • Interstitial fluid
  • Lymph
  • Circulation of lymph
  • Spleen
  • Lymph nodes
  • Nodules
  • Tonsils
  • Regulation of interstitial fluid volume
  • Absorption of dietary fats
  • Immune functions

Regulation and Function of Lymphatic Vessels

Lymphatic vessels regulate interstitial fluid volume, absorb dietary fats, and provide immune functions by filtering pathogens and housing leukocytes.

  • Regulation of Interstitial Fluid Volume
  • Absorption of Dietary Fats
  • Immune Functions
  • Lymphatic Vessels and Lymph Circulation
  • Lymph Trunks
  • Cisterna Chyli
  • Right Lymphatic Duct
  • Lacteals
  • Lymphedema

Introduction to Hemodynamics and Circulatory Physiology

Introduction to Hemodynamics and Circulatory Physiology

This lecture covers blood pressure, blood flow, and resistance, including factors determining blood pressure such as cardiac output, peripheral resistance, blood volume, and compliance.

  • Hemodynamics
  • Blood pressure
  • Blood flow
  • Resistance
  • Blood velocity
  • Pressure gradient
  • Peripheral resistance
  • Cardiac output
  • Stroke volume
  • Heart rate
  • Blood viscosity
  • Vessel radius
  • Vessel diameter
  • Blood volume
  • Compliance
  • Atherosclerosis
  • Aneurysms
  • Arteriosclerosis
  • Hypertension

Pulmonary and Systemic Blood Pressure

This topic explains the variations in blood pressure across different parts of the pulmonary and systemic circulatory circuits, including arteries, arterioles, capillaries, venules, and veins.

  • Blood pressure
  • Pulmonary circuit
  • Systemic circuit
  • Arteries
  • Arterioles
  • Capillaries
  • Venules
  • Veins
  • Systolic pressure
  • Diastolic pressure

Blood Typing and Matching Principles

Blood Typing and Matching Principles

Blood typing and matching involve antigens on erythrocytes and antibodies in plasma to determine ABO and Rh blood groups.

  • Blood typing
  • Blood matching
  • Antigens
  • Antibodies
  • Erythrocytes
  • ABO blood group
  • Rh blood group
  • Agglutination
  • Hemolysis
  • Universal donor
  • Universal recipient

Immunological Memory and Antibody-Mediated Immunity

Immunological Memory and Vaccine Types

Comparison of primary and secondary immune responses involving memory B cells and different types of vaccinations.

  • Immunological Memory
  • Memory B cells
  • Primary immune response
  • Secondary immune response
  • Vaccinations
  • IgM
  • IgG
  • Live attenuated vaccines
  • Killed vaccines
  • Subunit vaccines
  • Boosters

Antibody-Mediated Immunity and Immunodeficiency Disorders

This topic covers active and passive antibody-mediated immunity and primary and secondary immunodeficiency disorders.

  • Antibody-mediated immunity
  • Active antibody-mediated immunity
  • Passive antibody-mediated immunity
  • Naturally acquired immunity
  • Artificially acquired immunity
  • Memory cell formation
  • Immunodeficiency disorders
  • Primary immunodeficiency disorders
  • Secondary immunodeficiency disorders
  • Complement proteins deficiency
  • Phagocyte abnormalities
  • Severe combined immunodeficiency

Inflammatory Response and Cell Mediated Immunity

Cytokines and Inflammatory Response Mechanisms

Cytokines produce flu-like symptoms such as fever, chills and aches during the inflammatory response to cellular injury.

  • Cytokines
  • Tumor necrosis factor (TNF)
  • Interferons
  • Interleukins
  • Inflammatory Response
  • Cardinal signs of inflammation
  • Fever
  • Adaptive Immunity
  • Cell mediated immunity
  • Antibody mediated immunity

Cell Mediated Immunity and T Cell Maturation

Cell mediated immunity requires helper T or CD4 and cytotoxic T or CD8 cells to respond to viruses, intracellular bacteria, cancer cells, and foreign cells.

  • Cell Mediated Immunity
  • Helper T (TH) cells
  • CD4 cells
  • Cytotoxic T (TC) cells
  • CD8 cells
  • T cell maturation
  • Immunocompetence
  • Self tolerance
  • Mature naive T cells
  • T cell receptor
  • Lymphoid organs

Major Histocompatibility Complex (MHC) Glycoproteins

MHC glycoproteins serve as docking sites for antigens and display antigens on T cells.

  • Major Histocompatibility Complex (MHC) Glycoproteins
  • Class I MHC molecules
  • Class II MHC molecules
  • Cytotoxic T (TC) cells
  • Helper T (TH) cells
  • Antigen presenting cells (APC)
  • Endogenous antigens
  • Exogenous antigens

T Cell Activation and Differentiation

T cell activation requires clonal selection, co-stimulation, and differentiation into effector cells and memory cells.

  • T cell clonal selection
  • MHC antigen complex
  • T cell co-stimulation
  • T cell differentiation
  • Effector cells
  • Memory cells
  • Helper T (TH) cells
  • Cytokine secretion
  • Cytotoxic T (TC) cells
  • Innate immunity
  • Cell mediated immunity
  • Antibody mediated immunity

Effects of TC Cells

Activated TC cells bind target cells via MHC class I to release perforin and enzymes that induce apoptosis.

  • TC cells
  • MHC class I
  • Enzymes
  • DNA fragmentation
  • Apoptosis
  • Target cell degradation

Leukocytes and Platelets Functions and Formation

Leukocytes and Platelets Functions and Types

Leukocytes are white blood cells classified as granulocytes or agranulocytes that use blood as a vehicle to reach tissues.

  • Leukocytes
  • Granulocytes
  • Agranulocytes
  • Neutrophils
  • Eosinophils
  • Basophils
  • Lymphocytes
  • B lymphocytes
  • T lymphocytes
  • Monocytes
  • Macrophages
  • Platelets
  • Phagocytosis
  • Inflammation

Structure and Function of Lymphoid Tissues

Lymphoid Tissues and Organs

Lymphoid tissues and organs consist of reticular connective tissue with cell types including macrophages, B and T lymphocytes, dendritic cells, and reticular cells.

  • Lymphoid Tissues and Organs
  • Reticular connective tissue
  • Macrophages
  • B and T lymphocytes
  • Dendritic cells
  • Reticular cells
  • Mucosa-Associated Lymphatic Tissue (MALT)
  • Peyer’s patches
  • Tonsils
  • Pharyngeal tonsils
  • Palatine tonsils
  • Lingual tonsils
  • Lymph Nodes
  • Afferent lymphatic vessels
  • Efferent lymphatic vessels
  • Spleen
  • Red pulp
  • White pulp

Short Term Maintenance of Blood Pressure

Short Term Maintenance of Blood Pressure

The nervous and endocrine system adjusts resistance and cardiac output through autonomic nervous system, baroreceptor, and chemoreceptor reflexes.

  • Autonomic nervous system
  • Sympathetic division
  • Parasympathetic division
  • Norepinephrine
  • Epinephrine
  • Acetylcholine
  • Vagus nerve
  • Baroreceptor reflex
  • Chemoreceptors
  • Hypertension
  • Hypotension

Hemolytic Disease of the Newborn

Hemolytic Disease of the Newborn

Hemolytic disease of the newborn, or erythroblastosis fetalis, occurs when maternal anti-Rh antibodies cross the placenta and hemolyze fetal erythrocytes in subsequent Rh+ pregnancies.

  • Hemolytic Disease of the Newborn
  • Erythroblastosis fetalis
  • Rh- mother
  • Anti-Rh antibodies
  • Fetal erythrocytes
  • Rh0(D) injection
  • Placenta

Mechanisms of Autoimmune Disorders

Mechanisms of Autoimmune Disorders

Autoimmune disorders involve self reactive T cells and B cells that bind self antigens through various mechanisms.

  • Self reactive T cells
  • Self reactive B cells
  • Self antigens
  • Class II MHC molecules
  • Multiple sclerosis
  • Rheumatic fever
  • Diabetes mellitus
  • Systemic lupus erythematosus

Types and Rejection of Organ and Tissue Transplantation

Organ and Tissue Transplantation Types

Organ and tissue transplantation involves autografts, isografts, allografts, and xenografts which may result in organ and tissue rejection.

  • Autografts
  • Isografts
  • Allografts
  • Xenografts
  • Organ and Tissue Rejection
  • TC cells
  • Foreign antigens
  • Necrosis
  • Immunosuppressive therapy

Structure and Function of the Thymus

Blood Composition and Function

Composition of Plasma Proteins and Small Molecules

Plasma proteins include albumin, immune proteins, transport proteins, and clotting proteins, while small molecules consist of nutrients, nitrogenous wastes, ions, and dissolved gases.

  • Plasma proteins
  • Albumin
  • Colloid osmotic pressure
  • Immune proteins
  • Transport proteins
  • Clotting proteins
  • Small molecules
  • Nutrients
  • Nitrogenous wastes
  • Dissolved gases

Capillary Pressures and Net Filtration Pressure

Capillary Pressures and Net Filtration

  • Hydrostatic pressures
  • Osmotic pressures
  • Blood hydrostatic pressure
  • Interstitial hydrostatic pressure
  • Capillary osmotic pressure
  • Interstitial osmotic pressure
  • Colloid osmotic pressure
  • Albumin
  • Filtration
  • Osmosis

Capillary Pressures and Net Filtration

  • Capillary Net Filtration Pressure (NFP)
  • Hydrostatic pressure
  • Colloid osmotic pressure
  • Filtration
  • Absorption
  • Interstitial fluid
  • Hypertension
  • Liver failure

Erythrocyte Structure, Formation, and Regulation

Erythrocyte Structure and Hemoglobin Function

Erythrocyte structure allows for O2 and CO2 transport through hemoglobin subunits and heme groups.

  • Biconcave disc
  • Anucleated erythrocytes
  • Hemoglobin subunits
  • Heme group
  • Ferrous iron (Fe2+)
  • Oxyhemoglobin
  • Deoxyhemoglobin
  • Carbaminohemoglobin
  • Carboxyhemoglobin
  • Gas exchange

Erythrocyte Structure and Hemoglobin Function

Erythrocytes, or red blood cells, are crucial for oxygen and carbon dioxide transport, facilitated by hemoglobin. This topic covers their structure, the function of hemoglobin, and the breakdown and recycling of these cells.

  • Erythrocytes
  • Red blood cells
  • Hemoglobin
  • Oxygen transport
  • Carbon dioxide transport
  • Erythrocyte structure
  • Hemoglobin function
  • Heme group
  • Iron
  • Erythrocyte destruction
  • Spleen
  • Bilirubin
  • Iron recycling

Understanding Anemia Causes and Symptoms

Understanding Anemia Causes and Symptoms

Anemia is a decrease in O2 carrying capacity of blood resulting from decreased hemoglobin, decreased hematocrit, or abnormal hemoglobin.

  • Anemia
  • Pallor
  • Fatigue
  • Weakness
  • Shortness of breath
  • Reticulocytes
  • Hemoglobin
  • Iron deficiency anemia
  • Anemia of chronic disease
  • Vitamin B6 deficiency
  • Heavy metal poisoning
  • Hematocrit
  • Blood loss
  • Pernicious anemia
  • Vitamin B12 deficiency
  • DNA synthesis
  • Hemolytic anemia
  • Erythrocyte destruction
  • Aplastic anemia

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