Ch. 1 – Characteristics of Life & Organization of the Human Body

Slides:

Advertisements

Similar presentations

Chapter 1: An Introduction to Anatomy and Physiology

Advertisements

ANATOMY & PHYSIOLOGY 241 Study of the Human Body.

Introduction to Physiology

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Human Anatomy & Physiology SEVENTH EDITION Elaine N. Marieb Katja Hoehn PowerPoint.

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.

Bell Ringer… Put the following in order, from smallest to largest: organ, molecule, organelle, atom, organ system, tissue, organism, and cell How might.

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

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.

© 2007 McGraw-Hill Higher Education. All rights reserved. Chapter 2 Control of the Internal Environment EXERCISE PHYSIOLOGY Theory and Application to Fitness.

Negative and Positive Feedback Loops December 18, 2014.

Chapter One. A&P in Perspective  So what is Biology? ◦ Biology is defined as the “study of life” ◦ All living things exhibit the same basic functions.

Introduction to Physiology and Homeostasis

Introduction Chapter 1.

Unit 1 – Homeostasis Introduction

The Human Body: An Orientation: Part A

1 Levels of Organization Fundamentals of Anatomy & Physiology Unit

1 The Human Body: An Orientation:.

1 - Lecture An Introduction to Anatomy and Physiology.

Scott K. Powers Edward T. Howley Theory and Application to Fitness and Performance SEVENTH EDITION Chapter Copyright ©2009 The McGraw-Hill Companies, Inc.

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.

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

Day Objective: Define homeostasis and its affect on human body systems. Describe the role of the cell membrane in maintaining homeostasis. Warm up: Which.

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

1 Anatomy & Physiology Anatomy – the study of the structure of the human body Physiology – the study of the function of the human body “The complementarity.

What is anatomy and physiology?. Anatomy Describes the structures of the body: what they are made of (histology) where they are located associated structures.

1 Major Themes of Anatomy and Physiology  Form and Function  Anatomy is the study of what and where  Physiology is the study of how and why.

Human Anatomy and Physiology

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.

1 Anatomy & Physiology Anatomy – Physiology – “The complementarity of structure and function.”

The Human Body: An Orientation Chapter Maintaining life.

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

Introduction to Human Anatomy and Physiology Chapter 1 Bio 160.

Body Organization Part I BIO 201 Kelly Trainor, PhD.

Introduction to Homeostasis

Chapter 1 Self Assessment. Characteristics of Living Organisms Living Organisms share distinct properties: __________ are basic units of life Smallest.

Organization of the Body. Overview of Anatomy and Physiology Anatomy – the study of the structure of body parts and their relationships to one another.

Anatomy and Physiology …A to the P…. A to the P? What is a good definition for Anatomy? What is a good definition for Physiology?

(Foundation Block 4) Homeostasis I By Ahmad Ahmeda

Survival needs & homeostasis What we need to live and how we stay balanced.

Chapter One Part 1 Introduction to Anatomy and Physiology Characteristics of Life What is Anatomy and Physiology Maintenance of Life.

Anatomy – Greek for “a cutting open”  Study of internal and external structures of the body and the physical relationships among body parts Physiology.

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

Lecture 1 The Human Body: An Orientation: Part A.

Introduction to A & P Chapter 1. Characteristics of all living things: –Responsiveness –Growth –Reproduction –Movement –Metabolism.

An Introduction to Anatomy and Physiology

Unit 1 Intro/Atlas ppt 2 Homeostasis

VITAL SIGNS ANATOMY & PHYSIOLOGY.

INTRODUCTION TO PHYSIOLOGY

I can explain mechanisms of homeostasis

Ch. 1 – Characteristics of Life & Organization of the Human Body

8.1 Human Body Systems and Homeostasis

Chapter 2 Control of the Internal Environment

September 2017 Journal: Why is your body temperature always around 98.6 degrees Fahrenheit?

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

characteristics of Life

Lecture 1, Part 1: Introduction to Anatomy & Physiology

Introduction to Physiology

Introduction to Physiology

Unit 1 – Homeostasis Introduction

Chapter 1 Major Themes of Anatomy & Physiology

Unit 1 – Homeostasis Introduction

Presentation transcript:

Ch. 1 – Characteristics of Life & Organization of the Human Body

What is the difference between Anatomy and Physiology?

A. Anatomy- study of the structures of an organism -Examples of 4 subcategories:

1. Gross anatomy- large, what you can see

2. Microscopic anatomy - tiny Cytology= study of cells Histology= tissues

3. Developmental Anatomy -structure of an embryo (embryology)

4. Pathological anatomy- diseased structures

B. Physiology- study of the functions of an organism

What are the levels of organization in the human body? -chemical (subatomic, atomic, molecules, macromolecules) -organelles -cells (differentiated to perform unique functions) 100 Trillion! -tissues -organs -organ system (see below) -organism (human)

Virtually all processes in the body occur in order to maintain Homeostasis What is Homeostasis?

Homeostasis- an organism’s maintenance of a relatively constant internal state within set ranges. Examples: Temp.= ~ 98.6 °F b.p.= ~ 120/80 mmHg glucose= ~ 90-130 mg/dl Blood pH= 7.4 hydration= ~60% H2O MANY, MANY more!

Homeostatic control mechanisms- -known as a feedback control loop -virtually all of the body’s organ systems can be involved -there are three basic components: -Sensor – senses a change (a “stimulus”) -Integrator, (control center) – interpret the change -Effector – responds to the change

EFFECTOR: the heart begins to beat faster thereby increasing pressure. Example: SENSOR: pressure sensor in the walls of the heart and major arteries senses low blood pressure and sends a signal to the brain. INTEGRATOR: Medulla oblongata in the brain determines degree in which b.p. must be corrected and send a signal back to the heart. EFFECTOR: the heart begins to beat faster thereby increasing pressure.

NEGATIVE feedback mechanism- -creates a response that opposes the initial disturbance. (reverses the change) -work to stabilize physiological variables -are responsible for maintaining homeostasis

POSITIVE feedback mechanism- -amplifies or reinforces the change that is occurring CANCER!  -can be harmful or disasterous -very few normal positive feedback mechanisms -childbirth, bloodclotting, a sneeze