Cardiovascular System STRUCTURE CIRCULATION Heart System Includes Heart
- Slides: 40
Cardiovascular System STRUCTURE & CIRCULATION
Heart
System Includes Heart Blood Vessels Arteries – away from Veins – toward Capillaries
Heart
Cardiovascular Functions Transportation Carries: O 2, CO 2, nutrients, waste, enzymes Regulation p. H Temperature Water balance Protection Blood loss - clotting Immune system
Cardiovascular Functions Ensures unidirectional flow of blood Pumps blood to lungs and body Develops blood pressure for nutrient and waste exchange
Heart-Anatomical Location and Orientation
Heart Anatomical Orientation and Location
Heart Structure
Heart Structure 4 Chambers: Right Atrium Receives blood from body: Low in oxygen Superior vena cava Arms and upper body Inferior vena cava Lower extremities
Heart Structure 4 Chambers: Right Ventricle Lower Low right chamber oxygen blood Send blood to lung for oxygenation
Heart Structure 4 Chambers: Left Atrium Receives blood from: Lungs Oxygenated Pumps blood to left ventricle
Heart Structure 4 Chambers: Left Ventricle Receives blood from left atrium – high oxygen Pumps to body circulation (systemic)
Blood Flow Through the Heart
Blood Flow Through the Heart Animation https: //www. youtube. com/watch? v=Rj_q. D 0 SEGGk
Heart Structure Pericardium “Sac” around heart Made of serous membrane Facts Room to move Reduces friction Confines heart Problems Pericarditis Pericardial Effusion
Pericardium
Layers of the Heart
Layers of the Heart Epicardium Ø Myocardium Ø Endocardium Ø Figure 18. 3
Cardiac Muscle Cells
Cardiac Muscle Cells
Heart Structure
Heart Structure Endocardium Inner membrane - lines heart Endocarditis inflammation – endocardium
Heart Structure Myocardium Heart Muscle Surrounds chambers Thickness varies L. ventricle > R. atrium > L. atrium
Heart Structure Epicardium Membrane on outside of the heart
Valves of the Heart
Heart Valves
Heart Valves Flow in one direction Prevents Made tissue backflow of collagen connective
Heart Valves 2 Atrioventricular valves – (AV) Tricuspid (3 flaps) Bicuspid (2 flaps) AKA Mitral Valve Attachment: prevent Papillary muscles, blood reflux
Atrioventricular Valves (Open)
Atrioventricular Valves (Closed) Figure 18. 9 b
Heart Valves 2 Semilunar valves Composition: connective tissue flaps with crescent-shapes Pulmonary: Aortic: stop reflux in right ventricle stop reflux in left ventricle
Semilunar Valves (Open vs Closed)
Conduction System Cardiac muscle tissue has intrinsic ability to: Generate and conduct impulses Signal these cells to contract rhythmically Conducting system A series of specialized cardiac muscle cells Sinoatrial (SA) node sets the inherent rate of contraction
Conducting System
Conduction System
Conduction System
Disorders of the Heart Coronary artery disease Atherosclerosis – fatty deposits Angina pectoris – chest pain Myocardial infarction – blocked coronary artery Silent ischemia – no pain or warning
Disorders of the Heart failure Progressive weakening of the heart Cannot meet the body’s demands for oxygenated blood Congestive heart failure – heart Pumping efficiency declines enlarges Cor pulmonale Enlargement and potential failure of the right ventricle
Disorders of Conduction Ventricular fibrillation Rapid, random firing of electrical impulses in the ventricles Atrial fibrillation Multiple waves of impulses randomly signal the AV node Signals ventricles to contract quickly and irregularly
- The cardiovascular system includes the
- Single circulation and double circulation
- Single circulation and double circulation
- Structure of bronchioles
- Circulatory system crash course
- Coronary circulation of heart
- True capillaries
- What makes up the circulatory system
- Cushing reflex
- Totally tubular dude
- Chapter 5 the cardiovascular system
- Figure 11-8 arteries
- Figure 11-8 arteries
- Chapter 11 the cardiovascular system
- Lesson 11 cardiovascular system
- Tissue in cardiovascular system
- The cardiovascular system chapter 11
- Introduction of heart
- Ptca
- Anatomy and physiology unit 7 cardiovascular system
- Cardiovascular system diseases and disorders chapter 8
- Chapter 13 cardiovascular system
- Chapter 11 the cardiovascular system figure 11-2
- Blood vessels
- Chapter 19 the cardiovascular system blood vessels
- Figure 11-2 is an anterior view of the heart
- Pulmonary circulation system
- Pulmonary circuit and systemic circuit
- News story structure
- Riesgo cardiovascular por perimetro abdominal
- Maniobra de pachon
- Rutas integrales de atencion en salud
- National cardiovascular partners
- Cardiovascular drift
- Chapter 46 the child with a cardiovascular alteration
- Chapter 26 the child with a cardiovascular disorder
- Wolters kluwer
- American board of cardiovascular medicine
- Life
- Receptores sensoriales
- Pericardio