The Heart.

Slides:

Advertisements

Similar presentations

The Heart: Conduction System

Advertisements

Cardiac Considerations

The Heart of the Matter The intellect resides in the mind, but the soul lives in the heart…

Chapter 33: Circulatory and Respiratory Systems

Physiology of the Heart. Physiology of the heart You should understand by now that the Physiology of the Heart refers to the function of the heart You.

The cardiac cycle Pressure and volume changes and associated valve movements during the cardiac cycle. Describing the sequence of events in one heart beat.

5.2 The cardiac cycle. Learning outcomes Students should understand the following: Myogenic stimulation of the heart and transmission of a subsequent.

Control of the cardiac cycle. Learning intentions Describe how heart action is coordinated with reference to the sinoatrial node, the atrioventricular.

Cardiovascular System Heart & Blood Vessels (bv) Transport O 2, nutrients, hormones, cell wastes, etc…

+ B5b circulatory systems and the cardiac cycle. + Objectives Describe and explain double and single circulations, structure of the heart and circulatory.

Co-ordination of the Cardiac Cycle SBI3U. The heart is made of cardiac muscle. When the cells receive an electrical impulse they contract - causing a.

The Heart Control of the Heart Beat The Heart Beat The heart is made up of cardiac muscle. Cardiac muscle is myogenic, which means it naturally contracts.

Lecture 11.2 Heart Physiology. Conduction System of the Heart Intrinsic/Nodal System: spontaneous, independent of nervous system Causes heart muscle depolarize.

Anatomy & Physiology/Cardiovascular System. About the size of a an adult fist Hollow and cone shaped Weighs less than a pound Sits atop the diaphragm.

Chapter 15.4: Electrocardiogram

Control of Heart Rate IB Topic 6.2. Your Heart is a Muscle  Cardiac muscle Spontaneously contracts and relaxes without nervous system control  Two atria.

Learning objectives E - Label the different parts of the heart C - Describe the heart cycle, including the roles of the SAN, AVN & bundle of His A – Explain.

Learning Objectives... To understand the stages of the cardiac cycle.

AMA Anatomy & Physiology/Medical Terminology/Pathology 9 Cardiovascular System.

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

Cardiac Conduction  Autorhythmic: cardiac muscle cells depolarize at regular intervals  Cardiac Conduction system: cardiac cells that are specialized.

The Cardiac Cycle.

The Cardiac Cycle. The simultaneous contraction of both atria followed by both ventricles. The simultaneous contraction of both atria followed by both.

Setting the Heart’s Tempo Setting the Heart’s Tempo.

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.

3.2.4 Heartbeat Control. What you need to know 1.The location of the SA and AV nodes 2.Distinguish between Systole & Diastole 3.Be aware that cardiac.

Chapter 11. Intrinsic conduction system (nodal system) Heart muscle cells contract, without nerve impulses!

Heart Beat and Blood Pressure. Heart Beat Animation ions/ ions/

It Keeps On Beating. Review! What Does the Cardiovascular System Do? Fill in the Blanks: ( Use these terms) temperature, hormones, oxygen, carbon dioxide,

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

Series of events that constitute a complete heartbeat

ELAINE N. MARIEB EIGHTH EDITION 11 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.

Chapter 12 – Cardiovascular System Lecture 1. Intro  Cardiovascular System has three types of blood vessels 1. Arteries 2. Capillaries 3. Veins.

Blood Pressure What is blood pressure? The pressure of blood against the walls of the blood vessels as it circulates around the body.

The Cardiac Cycle. Learning Objectives  To identify & describe the main parts of the cardiac cycle  To describe how the cardiac cycle is controlled.

Cardiovascular System Notes: Physiology of the Heart.

The Show. The Heart The heart is a bag of cardiac muscle filled with blood Has 4 chambers: 2 atria & 2 ventricles Right side contains oxygenated blood.

Cardiovascular System

Cardiovascular System Chapter 11. Conduction System Intrinsic conduction system (nodal system)

The Heart: Conduction System

Heart and Cardiac cycle

The Cardiac Cycle. Cardiac Cycle aka “heartbeat” aka “heartbeat” each heartbeat (cycle) blood is forced out of ventricles each heartbeat (cycle) blood.

Heart Continued.

Cardiovascular System The Heart

Выполнил Финк Эдуард Студент 182 группы ОМ

Journal#2: Damage to the semilunar valve on the right side of the heart would affect blood flow to which vessel? Objective: Explain the events of the.

Cardiovascular System Notes

Conduction System of the Heart

What do I remember? What is the structure of the heart?

Cardiovascular: Heart

UNIT 3 NOTES: Cardiac Conduction System

Cardiac Conduction System

It Keeps On Beating Name of PowerPoint Name of Course Name of Lesson

Cardiovascular System

Heart Beat and Blood Pressure

Heart Rate and Heart Beat.

Cardiovascular: Heart

37–1 The Circulatory System

37–1 The Circulatory System

The cardiac cycle.

3.2.4 Heartbeat Control.

UNIT 2 NOTES: Cardiac Conduction System

It Keeps On Beating Name of PowerPoint Name of Course Name of Lesson

Chapter 10.2 Part 2.

Electrical Control Cardiac muscles are specialized muscle tissue

The Circulatory System

Journal#2: Damage to the semilunar valve on the right side of the heart would affect blood flow to which vessel? Objective: Explain the events of the.

Presentation transcript:

The Heart

The Heart The heart is a muscular structure that contracts in a rhythmic pattern to pump blood. The human heart is a two-sided, 4 chambered structure with muscular walls. The heart beats or contracts 70 times per minute. The human heart will undergo over 3 billion contractions during a normal lifetime.

The Heart The cardiac cycle consists of two parts: systole (contraction of the heart muscle) and diastole (relaxation of the heart muscle). Atria contract while ventricles relax. The pulse is a wave of contraction transmitted along the arteries. Valves in the heart open and close during the cardiac cycle. animations

The Cardiac Cycle Heart muscle contraction is due to the presence of nodal tissue in two regions of the heart. The SA node (sinoatrial node) initiates heartbeat. The SA node is sometimes called the pacemaker since it keeps heartbeat regular. The AV node (atrioventricular node) causes ventricles to contract. animations

The Cardiac Cycle One heartbeat, or cardiac cycle, includes atrial contraction and relaxation, ventricular contraction and relaxation, and a short pause. Normal cardiac cycles (at rest) take 0.8 seconds.