Guyton 2011 Chapter 9. Semilunar ValvesAv Valves Mitral Tricuspid Aorta Pulmonary.

Slides:

Advertisements

Similar presentations

Heart as a Pump.

Advertisements

Cardiac Output – amount of blood pumped from the ventricles in one minute Stroke Volume – amount of blood pumped from the heart in one ventricular contraction.

Cardiac Output: And Influencing Factors. Cardiac Output Amount of blood pumped out by each ventricle in 1 min CO = HR x SV.

 By the end of this lecture the students are expected to:  Define cardiac output, stroke volume, end- diastolic and end-systolic volumes.  Define physiological.

Ventricular Pressure loop

Cardiac Cycle: diastole Phase

CHAPTER II: CARDIAC MECHANICS Asst. Prof. Dr. Emre Hamurtekin EMU Faculty of Pharmacy.

ELECTRICAL & MECHANICAL ACTIVITY IN THE MAMMALIAN HEART.

Dr. Meg-angela Christi Amores

CARDIAC OUTPUT & VENOUS RETURN

Introduction to Cardiac Cycle and Cardiac Output

+ Control Of Cardiac Output By Manpreet & Olivia.

OCT 2009Dr Nyoman W / Dr DENNY AGUSTININGSIH1 THE CARDIAC CYCLE What is the cardiac cycle. The cardiac cycle is the sequence of events that occur when.

The Cardiac Pump.

Cardiac Output When the heart contracts Cardiac Vocabulary Contractility: Contractility is the intrinsic ability of cardiac muscle to develop force for.

2013 Cardiac output 1 Cardiac Output Prof. K. Sivapalan.

Guyton 2011 chapter 9. Excitation-contraction Coupling Ca induced Ca Released.

The Cardiovascular System: Cardiac Function

Cardiac biophysics. Heart Pump of the circulatory system Number of contractions Expelled blood volume 1 min ~70~6 l 1 day ~ ~8600 l Life (70 yrs)

Homeostatic imbalances

1 Heart Pump and Cardiac Cycle Faisal I. Mohammed, MD, PhD.

Refractory period of cardiac muscle cardiac muscle has refractory period, preventing restimulation cardiac muscle has refractory period, preventing restimulation.

1 Cardiovascular System: The Heart Mary Christenson, PT, PhD DPT 732: Management Applications of Physiology II of Physiology II Spring 2009.

Cardiovascular System

Frank-Starling Mechanism

Abstracts and Test 2 Earning up to 5 points for Test # 2 based on topics of Frog Heart Lab: –Regulation of pacemaker cells by temperature, hormones, neurotransmitters,

Sem Physio 9 – Cardiac muscle and the heart as a pump

Following our way through the Cardiac Cycle:

Human Anatomy & Physiology FIFTH EDITION Elaine N. Marieb PowerPoint ® Lecture Slide Presentation by Vince Austin Copyright © 2003 Pearson Education, Inc.

Cardiac Output. Cardiac output The volume of blood pumped by either ventricle in one minute The output of the two ventricles are equal over a period of.

The Cardiac Cycle. The repeating pattern of contraction (systole) and relaxation (diastole) of the heart The repeating pattern of contraction (systole)

Cardiac Conduction System. (1) Conduction System of Heart Conduction System = Heart Beat & Pumping Cardiac Contractions = Unconscious –Autonomic Nervous.

Cardiovascular Physiology

PRINCIPLES OF HUMAN PHYSIOLOGY THIRD EDITION Cindy L. Stanfield | William J. Germann PowerPoint ® Lecture Slides prepared by W.H. Preston, College of the.

Anatomy and Physiology

Heart Prepared by Dr F.Nikbakht Assistant professor of Medical school.

HEART PHYSIOLOGY. What a Job!  It pushes your six liters of blood through your blood vessels over 1000 times a day!  Thousands of cells function as.

CARDIOVASCULAR SYSTEM CARDIAC CYCLE-II HEART SOUNDS 1 DR. Mohammed Sharique Ahmed Quadri.

The cardiovascular system in action 1/Cardiac function and cardiac output 2/ Cardiac cycle.

Heart Physiology. Heart pumps 6000 quarts of blood per day Nearly the entire blood volume is pumped through once per minute Regulated by – Autonomic nervous.

Physiology of Ventricular Function Dr. Chris Glover Interventional Cardiology Director of Education University of Ottawa Heart Institute January 12, 2015.

The Cardiac Cycle. The repeating pattern of contraction (systole) and relaxation (diastole) of the heart The repeating pattern of contraction (systole)

The cardiac cycle Ventricular filling the diastole refers to the period of the cardiac cycle during which the ventricles are filling with blood the systole.

11 November 2009 Cardiovascular Physiology Lab this Week: Human EKGs, Heart Sounds, and Blood Pressure… Wear running shoes, comfortable clothes, bring.

Pressure gradients move blood through the heart and vessels. Pulmonary circulation vs. systemic circulation Circulatory system.

Chapter 17 Cardiovascular Emergencies. OBJECTIVES To know the risk factors of cardiac diseases. To know the epidemiology of cardiac diseases. To know.

The Cardiac Cycle. Systole – contraction Diastole – relaxation PLEASE SEE THE HANDOUT ON THE WIKI FOR DETAILS OF EACH STEP.

Cardiac cycle Phase1. Atrial systole: AV valves open; aortic and pulmonic valves closed Phase1. Atrial systole: AV valves open; aortic and pulmonic valves.

Events of the Cardiac Cycle Why did the blood flow across the valve? Desire - it wanted to Ability - it could do it Movement = Desire X Ability Flow.

Cardiac Output April 28, 2017 Cardiac Output.

The cardiovascular system The heart. RENAL-BODY FLUID CONTROL SYSTEM CARDIOVASCULAR SYSTEM HEART (PUMP) VESSELS (DISTRIBUTION SYSTEM) REGULATION AUTOREGULATION.

1. LECTURE – 3 DR. ZAHOOR ALI SHAIKH 2 CARDIAC CYCLE  Cardiac events occurring during one beat (systole & diastole) are repeated during the next beat.

Kim Hastings – November  To describe the key elements of the cardiovascular system  To relate structure to function of key components  To describe.

University of Jordan 1 Cardiovascular system- L4 Faisal I. Mohammed, MD, PhD.

1 Topics to be addressed: Blood Anatomy of Blood Vessels Anatomy of the Heart The Conduction System The Cardiac Cycle Cardiodynamics Blood Flow and its.

Factors that effect EDV and ESV

Cardiac Physiology Class 1.

D. Cardiac Cycle: Mechanical Events

UNIT III THE HEART CHAPTER 9 : THE CARDIAC CYCLE Dr. Aisha Riaz.

D. Cardiac Cycle: Mechanical Events

THE HEART Chapter 18.

The Cardiovascular System

The Heart Circuits Chambers Valves (one-way-flow) Myocardiocytes.

Cardiovascular system- L3

CARDIC CYCLE Dr. Haseeb Sattar.

dr. Sri Lestari Sulistyo Rini, MSc

Cardiovascular system- L4

Heart Topics Location of the Heart Chambers of the Heart Heart Valves

Introduction; The Cardiovascular System (CVS)

Presentation transcript:

Guyton 2011 Chapter 9

Semilunar ValvesAv Valves Mitral Tricuspid Aorta Pulmonary

Low frequency Loudest and longest High frequency Shorter duration Low intensity In children with thin chest wall and heart failure In early diastole Atrial contraction Occasionally in healthy individual S1 S4 S2 S3

The Force-length Relationship of Myocardial Fibers

Muscle Length and Force of Contraction Passive Tension Total Tension Active Tension

The Volume – Pressure Relationship of Myocardial Fibers

10 Ventricular Pressure-Volume Relationship End -Diastolic Ventricular Volume (EDV) End -Systolic Ventricular Volume (ESV) Stroke Volume (SV) Ejection Fraction (EF) = SV/EDV

11 Points Efficiency of Cardiac Contraction In normal condition is about percent In heart failure is as low as 5-10 percent Preload and Afterload Chemical Energy Required for Cardiac Contraction 70 to 90 percent derived from oxidative catabolism of fatty acids 10 to 30 percent from other nutrients especially lactate and glucose

12 Regulation of Heart Pumping Intrinsic Regulation Frank-Starling Extrinsic Regulation Nervous Control

13 Intrinsic Regulation of Heart Pumping The Frank-Starling Mechanism

14 Intrinsic Regulation of Heart Pumping The Frank-Starling Mechanism

15 Extrinsic Regulation - Nervous Control

16

17 Effect of Potassium and Calcium ions on Heart Function CaK  Arrest in Diastole Bradycardia Arrest in Systole Bradycardia

18 Effect of Temperature Heart Function Effect of Temperature Heart Function  Tachycardia Bradycardia

The End