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Major categories of diseases. Types of infectious organisms & some diseases caused by them. Common responses to disease. Examples of neoplasia. Word parts pertaining to diseases. Major terms describing types of diseases. Major manifestations of diseases.
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Major categories of diseases. • Types of infectious organisms & some diseases caused by them. • Common responses to disease. • Examples of neoplasia. • Word parts pertaining to diseases. • Major terms describing types of diseases. • Major manifestations of diseases. Chapter 6: Disease
Disease Categories • Infectious • Caused by microorganisms, parasites called pathogens • Degenerative • Caused by wear and tear, aging or trauma • Arthritis, emphysema • Neoplasia • Abnormal, uncontrolled growth of tissue
Disease Categories (cont’d) • Immune disorders • Failures of immune system • Allergies • Autoimmune disorders • Metabolic disorders • Caused by lack of enzymes • Hereditary disorders
Disease Categories (cont’d) • Malnutrition • Hormonal disorders • Underproduction or overproduction of hormones • Diabetes mellitus • Mental and emotional disorders • Affects the mind • Individuals unable to adapt to environment
Infectious Diseases • Caused by: • Viruses • Bacteria • Fungi (yeast and molds) • Protozoa (single-celled animals) • Worms
Infectious Diseases (cont’d) • Bacteria categorized by: • Shape • Round • Rod-shaped • Curved • Arrangements they form • Dyes when stained in lab • Most common is Gram stain
Responses to Disease • Inflammation • Body’s response to infection and diseases • Four signs: heat, pain, redness, swelling • Suffix –itis indicates inflammation • Examples include: • Appendicitis (inflammation of appendix) • Tonsillitis (inflammation of tonsils)
Responses to Disease (cont’d) • Phagocytosis • Process used by body • Gets rid of: • Invading microorganisms • Damaged cells • Other harmful debris • Found circulating in blood, tissue, lymphatic system • Remains of process called pus
Response to Diseases (cont’d)Immunity • Immune system controls response to disease • Adaptive immunity: acquired during life from exposure to disease organisms • Monitors body for: • Abnormal cells • Malfunctioning cells • May cause its own problems • Overreaction produces allergies • Reaction to own tissues causes autoimmune diseases
Neoplasia • Neoplasm • Abnormal and uncontrolled growth of tissue • Metastasizing • Benign • Malignant • Examples of malignant tumors: • Carcinoma (epithelial tissue) • Sarcoma (connective tissue or muscle)
Pretest • Any organism so small that it can only be seen with a microscope is a: (a) miniorganism (b) macroorganism (c) microcell (d) microorganism
Pretest • Any organism so small that it can only be seen with a microscope is a: (a) miniorganism (b) macroorganism (c) microcell (d) microorganism
Pretest • A disease that has a sudden and severe onset is described as: (a) chronic (b) mild (c) acute (d) infectious
Pretest • A disease that has a sudden and severe onset is described as: (a) chronic (b) mild (c) acute (d) infectious
Pretest • Abnormal and uncontrolled growth of tissue is termed: (a) anemia (b) neoplasia (c) parasitism (d) toxicity
Pretest • Abnormal and uncontrolled growth of tissue is termed: (a) anemia (b) neoplasia (c) parasitism (d) toxicity
Pretest • Abnormal and uncontrolled growth of tissue is termed: (a) cocci (b) yeasts (c) fungi (d) bacilli
Pretest • Abnormal and uncontrolled growth of tissue is termed: (a) cocci (b) yeasts (c) fungi (d) bacilli
Pretest • Single-celled animals, as a group, are called: (a) algae (b) molds (c) protozoa (d) vibrios
Pretest • Single-celled animals, as a group, are called: (a) algae (b) molds (c) protozoa (d) vibrios
Pretest • Heat, pain, redness, and swelling are the characteristics signs of: (a) immunity (b) fever (c) inflammation (d) healing
Pretest • Heat, pain, redness, and swelling are the characteristics signs of: (a) immunity (b) fever (c) inflammation (d) healing
Pretest • White blood cells engulf foreign organisms by the process of: (a) phagocytosis (b) egestion (c) ejection (d) dysphagia
Pretest • White blood cells engulf foreign organisms by the process of: (a) phagocytosis (b) egestion (c) ejection (d) dysphagia
Pretest • The sum of all body defenses against infectious disease is termed: (a) pyosis (b) complementation (c) secretion (d) immunity
Pretest • The sum of all body defenses against infectious disease is termed: (a) pyosis (b) complementation (c) secretion (d) immunity