Homeostasis Anatomy and Physiology Unit 5 Sophie Bevan.

Slides:

Advertisements

Similar presentations

VITAL SIGNS INFORMATION ABOUT THE BASIC BODY CONDITIONS OF PATIENTS.

Advertisements

© 2011 National Safety Council 15-1 ENVIRONMENTAL EMERGENCIES LESSON 15.

Feedback Mechanisms Response to Environmental Changes.

Homeostasis P Introduction to. Core Temperature Humans have a normal temperature of around 36.2 to 37.2 degrees Celsius Body temperature goes.

Temperature Regulation

Regulating the Internal Environment

Feedback & Thermoregulatio n. Important definitions Stimulus – change in the environment Receptor – detects stimulus Afferent pathway – carries nerve.

Temperature Regulation

Chapter 10.  Transfer of Body Heat ◦ Conduction ◦ Convection ◦ Radiation ◦ Evaporation  Humidity and Heat Loss.

Introduction Physiology: Study of the function and relationship of the various organ systems.

Heat and Cold Emergencies

Key Area 4 : Conformers and Regulators

Heat Emergencies Prepared by: Steven Jones, NREMT-P.

Requirements Alcohol thermometers Strip thermometers Infrared thermometer.

Temperature Regulation When studying temperature regulation the body can be divided into two regions: the core and the shell. Core (internal organs) –temperature.

Homeostasis Aim: Understand the principles of homeostasis and negative feedback using body temperature, blood pH, blood glucose levels and water potential.

Organisms and Their Environment Area of Study 1: Adaptations of Organisms UNIT 2 BIOLOGY.

FEEDBACK SYSTEM – Temperature Jordan Henderson, Stefan moraru, Terence Felix and Elijah vittaca.

Hypothalamus, temperature regulation

13.1 The Principles of Feedback Mechanisms 13 Feedback Mechanisms.

Introduction to Homeostasis.

Lecture Nine Controlling ions, temperature and blood sugar.

Unit 4: Medical Technologies. - any format of machinery that is used to operate or perform medical procedures.

Extreme Heat and Cold From: prevent-the-heat-from-harming-kids/

HOMEOSTASIS – TEMPERATURE REGULATION WALT – To understand that internal conditions of the body need to be controlled. To know that if the water or ion.

  The way the body keeps its internal environment constant  How the body “maintains a steady state”  What internal conditions need to be maintained?

 Homeostasis. What is Homeostasis?  The way the body keeps its internal environment constant, in other words, how the body “maintains a steady state”

HOMEOSTASIS “Keeping The Status Quo”.  A set of processes used to maintain a balanced body environment  Blood pressure at 120/80  Body temperature.

Louis Chow. Homeostasis  The ability of the body to maintain a constant internal environment despite fluctuations in both the body’s activities and the.

Thermoregulation. Homeostasis – Is the stable, constant temperature for the human body to most effectively function. This is around 37 degrees Celsius.

Thermoregulation Control of an organism’s temperature within a functional range.

What is meant by tolerable limits Mechanisms never allow it to go too high or too low What two ways does an animal have of communicating a response? Hormones.

December 13, 2010 BellRinger  Read essay “behavior of homeostasis” pg  What is the difference between an ectotherm and an endotherm? Objectives.

Homeostasis & Body Temperature National 4 &5 – Multicellular Organisms.

Body Temperature RegulationBody Temperature Regulation Chapter 6 Sections 4Chapter 6 Sections 4.

Human Physiology Sweating Hypothalamus --> SNS output--> SNS releases acetylcholine (ACH) on sweat glands--> stimulates Na+ active (with ATP)

© 2010 McGraw-Hill Australia Thermoregulation Chapter 8 Homeostasis of body temperature and body fluids.

Homeostasis: Maintaining a Balance. Key Words: Maintain – keep up. Constant – the same. Internal – inside the body. Environment – surroundings of the.

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

What happens when your body increases or decreases in temperature?

Homeostasis Introduction to. What is Homeostasis? The body’s attempt to maintain “normal” levels within your body Homeostasis is the mechanism to ensure.

Thermoregulation Biology Stage 3 Chapter 15 Pages

Temperature Regulation We need to regulate body temperature to provide the optimum conditions for enzyme-catalysed reactions to be carried out.

Homeostasis Anatomy and Physiology Unit 5 Sophie Bevan.

Why warm our patients? To maintain a near normal core body temperature to aid patient recovery, normal body temperature = 37 degrees.

Anatomy and Physiology Unit 5 Sophie Bevan. ‘The same state’ Equilibrium Negative feedback Homeostasis The way your body attempts to maintain constant.

Maintenance of internal environment constant.

To know how the body regulates its temperature.

THERMOREGULATION.

Control of body temperature in humans Learning objectives: Explain how humans and other endotherms regulate their body temperature Explain the role of.

Thermoregulation.

Temperature Regulation

Next page Unit B4 Homeostasis.

Human Thermoregulation

Maintaining the balance

EXCRETION HOMEOSTASIS.

WEATHER, CLIMATE AND HUMAN COMFORT.

Higher Biology Metabolism and survival

Regulating Mechanisms

Homeostasis Same State

HOMEOSTASIS EXAMPLES.

6.5 Notes Homeostasis.

TOPIC OF PRESENTATION . THERMOREGULATION IN MAMMALS.

Human Anatomy & Physiology

Chapter 19 Heat and Cold Related Emergencies

In Humans & Animals.

Introduction to Homeostasis.

Outline What is Homeostasis? Controlling body temperature

Presentation transcript:

Homeostasis Anatomy and Physiology Unit 5 Sophie Bevan

Evaluate the importance of homeostasis in maintaining the healthy functioning of the body (D2)

When homeostasis doesn’t work.. Glucose: diabetes/type 1/type 2 Temperature: hypo/hyperthermia/pyrexia in children (fever) Breathing Rate: asthma/altitude/Orndines’ curse Heart Rate: tachycardia/bradycardia

What happens when homeostatic mechanisms for temperature go wrong? Temperature: hypo/hyperthermia/pyrexia in children (fever)

Hyperthermia Increased temperature above normal value Heat Stroke Heat Exhaustion Pyrexia: ‘a physiological response to illness, due to an increase in the set point of temperature in the hypothalamic regulatory centre’

Pyrexia Fever Usually caused by an infection or disease Disease affects thermoreceptors in the hypothalamus, raising the set point Patient feels cold, curls up, looks pale due to vasoconstriction intense shivering (rigors) When the set point has been met, the heat loss mechanisms begin Once infection subsides, set point is reset

Hypothermia Decreased temperature above normal value In Babies Large surface area to volume ratio Temperature change effects them rapidly Unable to control temperature through conscious efforts themselves – carers have to closely monitor this

Hypothermia Alcohol consumption increases the risk of hypothermia via its action as a vasodilator. It increases blood flow to the body's skin and extremities, making a person feel warm, while increasing heat loss. Between 33 and 73% of cases of hypothermia are complicated by alcohol What does hypothermia do to your body?