Fundamentals of Infections and Diseases Unit 1.pdf

Fundamentals of Infections and Diseases SACRED HEART SCHOOL - ATENEO DE CEBU Fundamentals of Infections and Diseases Unit 1 Pia Angelica S. Cinco CEP-Medicine Teacher Fundamentals of Infections and Diseases Fundamentals of Infection...

Fundamentals of Infections and Diseases SACRED HEART SCHOOL - ATENEO DE CEBU Fundamentals of Infections and Diseases Unit 1 Pia Angelica S. Cinco CEP-Medicine Teacher Fundamentals of Infections and Diseases Fundamentals of Infections and Diseases Fundamentals of Infections and Diseases Fundamentals of Infections and Diseases Fundamentals of Infections and Diseases Learning Objectives Fundamentals of Infections and Diseases Determine the different ways homeostasis is achieved in the body Differentiate positive feedback loop systems from negative feedback loop systems Identify what will happen once homeostasis in the body is disturbed  Fundamentals of Infections and Diseases HOMEOSTASIS "Homoios + Histemi" standing still Homeostasis Fundamentals of Infections and Diseases Maintenance of a stable internal environment = a dynamic state of equilibrium Homeostasis must be maintained for normal body functioning and to sustain life Homeostatic imbalance – a disturbance in homeostasis resulting in disease Homeostasis and Body Fluids Fundamentals of Infections and Diseases Maintenance of volume and composition of body fluids is important in homeostasis intracellular fluid (ICF) - fluid within cells extracellular fluid (ECF) - fluid outside cells interstitial fluid - ECF that fills the narrow spaces between cells of tissues proper functioning of the body's cells depends on the regulation of interstitial fluid (internal environment) regulated through exchange in capillaries Homeostasis Fundamentals of Infections and Diseases The body communicates through neural and hormonal control systems to maintain homeostasis Internal environment is regulated through feedback systems a cycle of events in which the status of a body condition is monitored, evaluated, changed, remonitored, reevaluated, and so on each monitored variable is called a controlled condition any disruption that changes a controlled condition is called a stimulus Homeostasis Fundamentals of Infections and Diseases Three basic components of a feedback system: Receptor (Afferent pathway) Responds to changes in the environment (stimuli) Sends information to control center Control center (Efferent pathway) Determines set point Analyzes information Determines appropriate response Effector Provides a means for response to the stimulus Fundamentals of Infections and Diseases  Fundamentals of Infections and Diseases Feedback Mechanisms Negative feedback Includes most homeostatic control mechanisms Shuts off the original stimulus, or reduces its intensity Works like a household thermostat  Fundamentals of Infections and Diseases Feedback Mechanisms Positive feedback Increases the original stimulus to push the controlled condition farther In the body this only occurs in blood clotting and birth of a baby Fundamentals of Infections and Diseases Fundamentals of Infections and Diseases Fundamentals of Infections and Diseases Explain the mechanism of the process with a flowchart, Fundamentals of Infections and Diseases specify which parts are the stimulus, receptor, integrating center, effector, and response, then identify if the feedback mechanism is positive or negative and why. Childbirth Thermoregulation Lactation Blood Sugar Regulation Ovulation Osmoregulation Blood Clotting Blood Pressure Regulation Homeostatic Imbalances Fundamentals of Infections and Diseases General health is maintained by the body's ability to maintain homeostasis body's internal environment is kept stable affected by: environment and your own behavior genetic makeup poor health behavior > interference in body's drive to maintain homeostasis > DISORDER/DISEASE/DEATH Definition of Terms Fundamentals of Infections and Diseases Disorder - any abnormality of structure or function Disease - more specific term for an illness characterized by a recognizable set of signs and symptoms Symptoms - subjective changes in body functions that are not apparent to the observer Signs - objective changes that a clinician can observe and measure Local disease - affects one part or a limited region of the body Systemic disease - affects either the entire body or several parts of it Definition of Terms Fundamentals of Infections and Diseases Epidemiology the science that deals with why, when, and where diseases occur and how they are transmitted among individuals in a community Pharmacology the science that deals with the effects and uses of drugs in the treatment of disease Diagnosis the science and skill of distinguishing one disorder or disease from another. Homeostasis Exit Pass Fundamentals of Infections and Diseases Give an example of a situation you have encountered before in your daily life that demonstrated a feedback mechanism and explain how it maintained homeostasis in your life. PLEASE PLACE YOUR FULL NAME AND SECTION AS THE https://padlet.com/piacinco1/homeostasis- SUBJECT OF YOUR POST. exit-pass-x1w5qpuvthz0v47y