Homeostasis. Basic Life Processes Homeostasis. Condition of equilibrium in body’s internal environment produced by ceaseless interplay of all the body’s.

Slides:

Advertisements

Similar presentations

Feedback Systems In The Body

Advertisements

Introduction to Physiology

Homeostasis and Feedback

Chapter 1: Introduction to Anatomy and Physiology

Overview of Anatomy and Physiology Anatomy – the study of the structure of body parts and their relationships to one another Gross or macroscopic.

Feedback System How does the body sense, process and respond to changes in body conditions?

A Quick Review Modified from J.Pheifer Auburn High School.

Control of the Internal Environment

Homeostasis Homeo = similar, stasis = condition Defined as the ability to maintain a relatively stable internal environment The human body maintains hundreds.

Negative and Positive Feedback Loops December 18, 2014.

Introduction Chapter 1.

Chapter 1 - The Study of Body Function Physiology – Study of biological function. –Our emphasis is on cellular mechanisms, i.e. how the structure accomplishes.

Unit 1 – Homeostasis Introduction

The Human Body: An Orientation

Basic Life processes (certain processes that distinguish organisms (living things) from non-living things Metabolism (the sum of all the chemical processes.

Anatomy: study of structure (morphology) of body parts and how they are organized.

ANATOMY AND FUNCTION OF HUMAN BODY (be health and safe in your workplace) dr. NURUL HIDAYATI, M.Sc Department of Anatomy-Histology Faculty of Medicine.

Anatomy Homeostasis.

HOMEOSTASIS Homeostasis is the maintenance of a steady state in the body despite changes in the external environment The steady state is the optimum level.

BIOLOGY 145 ANATOMY & PHYSIOLOGY CHAPTER 1. Introduction to the Human Body Anatomy is the study of structure and the relationships among the structures.

Homeostasis. Claude Bernard (1813 – 1878) French Physiologist Called the environment of cells the internal environment Bernard made the observation that.

Homeostasisq Defined as maintenance of a relatively stable internal environment Defined as maintenance of a relatively stable internal environment Homeostasis.

Homeostasis A state of balance in the body Whoa. Maintenance of a stable internal environment = a dynamic state of equilibrium Homeostasis must be maintained.

Maintaining Life. Survival Needs  Nutrients Consumed chemical substances that are used for energy and cell building.

III.Homeostasis A. Basic principles 1. Homeostasis is the condition in which the body’s internal environment remains within certain physiological limits.

The body receives a stimulus via a receptor o Cold-extrinsic o Heat-extrinsic o Pain-extrinsic or intrinsic o An odor-intrinsic o Fatigue-intrinsic.

Mr. Mah Living Environment Lecture 10.  Hormones are secreted by endocrine glands or cells into the blood. Only _____________ ___________with receptors.

Introduction to the Human Body Anatomy & Physiology Class Mrs. Leisher.

Homeostasis Maintaining the body’s internal environment by the interaction of organ systems and regulatory processes A response to changing conditions.

Homeostasis. Homeostasis  The process of maintaining the body’s internal environment, despite changes in the external environment  This makes sure that.

Denny Agustiningsih Dept. of Physiology.  Concept of homeostasis was formulated by a French Physiologist Claude Bernard in 1865  He noticed that La.

Introduction to Body Organization Anatomy-Physiology I … here we go!

Homeostasis. What is homeostasis? The ability of the organism to maintain a constant internal state. This process by which conditions are returned to.

Homeostasis Definition Regulating Blood Glucose Level Source: Raven P. and G. Johnson 1992 Biology. Third Ed. United States: Mosby Year Publishing.

35-1 Summary. Levels of Organization Chemical Chemical Cellular Cellular Tissue Tissue Organs Organs System Level System Level Organismic Level Organismic.

Regulatory Mechanisms in Animals. Regulatory Pathways Animals need to communication systems to regulate their functions effectively. The two systems which.

Homeostasis 1: What is Homeostasis? Structures and Processes of the Nervous System What is Homeostasis? Structures and Processes of the Nervous System.

The Human Body: An Orientation Chapter Maintaining life.

Anatomy & Physiology I BIO Lecture and Lab Levels of Anatomical Organization and Homeostasis.

Body Organization Part I BIO 201 Kelly Trainor, PhD.

Introduction to Homeostasis

Feedback System How does the body sense, process and respond to changes in body conditions?

Maintain yourself!. What is it? HOMEOSTASIS- this means a state of equilibrium homeo--same stasis--standing still A. The maintenance of a stable internal.

Temperature Regulation By the end of the lesson you should know How the body corrects overheating How the body corrects overcooling What thermocreceptors.

Feedback systems for controlling body functions

Homeostasis and Integration The parameters of homeostasis Integration through feed back loops Nervous, endocrine and neuroedocrine reflexes Midterm test:

(Foundation Block 4) Homeostasis I By Ahmad Ahmeda

FEEDBACK MECHANISMS & HOMEOSTASIS. HOMEOSTASIS Maintaining the internal environment within a stable range given factors that influence the external environment.

Chapter 1: An Introduction to the Human Body BIO 137 Anatomy & Physiology I.

Bell Ringer List all Organ Systems..

Introduction to Anatomy & Physiology Anatomy - is the science of structure and the relationship among structures. Physiology – is the science of body functions….how.

An Introduction to Anatomy and Physiology

INTRODUCTION TO PHYSIOLOGY

The Human Body: An Orientation

Negative and Positive Feedback Loops

Homeostasis and Feedback Loops EQ: What is homeostasis and how are feedback loops used to achieve it?

HOMEOSTASIS EXAMPLES.

homeo = same stasis = standing

Introduction to Physiology

Introduction to the Human Body

Homeostasis Read page 423 and brainstorm answers to questions.

Introduction to Physiology

Life Processes Metabolism Responsiveness Movement Growth

What is Homeostasis? • process by which a constant internal environment is maintained despite changes in external environment • performed by the endocrine.

Unit 1 – Homeostasis Introduction

Unit 1 – Homeostasis Introduction

Presentation transcript:

Homeostasis

Basic Life Processes Homeostasis. Condition of equilibrium in body’s internal environment produced by ceaseless interplay of all the body’s regulatory processes. The process by which an organism maintains the conditions suitable for life.

Control Of Homeostasis Homeostasis is constantly being disrupted. Imbalances occur due to disruptions from external or internal environments. Usually, it is quickly restored.

Control Of Homeostasis Homeostasis is regulated by: –nervous system –endocrine system, –together or independently.

Control Of Homeostasis The nervous system detects changes and sends nerve impulses to counteract the disruption. The endocrine system regulates homeostasis by secreting hormones.

Feedback system –A cycle of events in which 1. Information about status of a condition is continually monitored 2. Information is fed back (reported) to a central control region. G eneral Principles of Feedback Systems

Feedback Systems Any disruption that changes a controlled condition is called a stimulus. Consist of three basic components.

Basic Components Receptor –monitors changes in a controlled condition –sends input in the form of nerve impulses or chemical signals to a control center.

Basic Components Control center: –1. Sets range of values within which a controlled condition should be maintained. –2. Evaluates input it receives from receptors. –3. Generates output commands when they are needed.

Negative Feedback System Response reverses the original stimulus. Stops doing what it was doing. Example: –Baroreceptors detect increased heart rate that leads to increased BP (receptor). –Send input to brain (control center). –Heart (effector) slows which lowers BP.

Positive Feedback System. Response enhances the original stimulus. Keeps doing more of the same.

Positive Feedback System A positive feedback system tends to strengthen or reinforce a change in one of the body’s controlled conditions. Normal childbirth provides a good example of a positive feedback system.

Homeostatic Imbalances Uncorrected disruption of homeostasis can lead to disease and death.