Physiological System of Heart Cardiovascular System Heart Size

  • Slides: 29
Download presentation
Physiological System of Heart & Cardiovascular System

Physiological System of Heart & Cardiovascular System

Heart § Size - Clenched fist, slightly left § It beats about 4000 times

Heart § Size - Clenched fist, slightly left § It beats about 4000 times an hour and about 100, 000 times a day § It will beat over 2 billion times in a lifetime § Each heartbeat pumps half cup of blood § The force of your heartbeat is sufficient to shoot blood 30 feet into the air

Heart

Heart

CARDIOVASCULAR SYSTEM- THE HEART

CARDIOVASCULAR SYSTEM- THE HEART

CARDIOVASCULAR SYSTEM • It has four valves: ØTricuspid valve or right atrio-ventricular valve ØBicuspid

CARDIOVASCULAR SYSTEM • It has four valves: ØTricuspid valve or right atrio-ventricular valve ØBicuspid mitral valve or left atrio-ventricular valve ØPulmonary valve or semilunar valve ØAortic valve o All these valves are unidirectional o Provides synchronous operation

CARDIOVASCULAR SYSTEM • 2 types of blood circulation ØPulmonary circulation v. Right ventricle Pulmonary

CARDIOVASCULAR SYSTEM • 2 types of blood circulation ØPulmonary circulation v. Right ventricle Pulmonary artery Lungs v. Lungs Pulmonary veins Left atrium ØSystemic circulation v. Left atrium Left ventricle Aorta Arteries (Exchange of gases) v. Veins Superior/Inferior venacavae Right atrium Right ventricle

CARDIOVASCULAR SYSTEM - CIRCULATORY SYTEM

CARDIOVASCULAR SYSTEM - CIRCULATORY SYTEM

Circulation through Heart Although equal volumes of blood are flowing in the pulmonary and

Circulation through Heart Although equal volumes of blood are flowing in the pulmonary and systemic circuits, the two ventricles have uneven workloads. Pulmonary Circuit: right, short low pressure circulation. Systemic Circuit: left, long pathway, five times as much resistance to blood flow, high pressure

The Anatomy of the Heart The Surface Anatomy of the Heart

The Anatomy of the Heart The Surface Anatomy of the Heart

The Anatomy of the Heart The Surface Anatomy of the Heart

The Anatomy of the Heart The Surface Anatomy of the Heart

CARDIOVASCULAR SYSTEM - CIRCULATORY SYTEM

CARDIOVASCULAR SYSTEM - CIRCULATORY SYTEM

Heart’s Place in the Circulation Overview of the Cardiovascular System Superior vena cava aorta

Heart’s Place in the Circulation Overview of the Cardiovascular System Superior vena cava aorta inferior vena cava

Pulmonary Circulation • • • Pulmonary = Deoxygenated Blood Involves Right Side of Heart

Pulmonary Circulation • • • Pulmonary = Deoxygenated Blood Involves Right Side of Heart Pathway: 1. Superior / Inferior Vena Cava 2. Right Atrium Tricuspid Valve 3. Right Ventricle Pulmonary Semilunar Valve 4. Left Pulmonary Artery 5. Lungs

Systemic Circulation • • • Systemic = Oxygenated Blood Involves Left Side of Heart

Systemic Circulation • • • Systemic = Oxygenated Blood Involves Left Side of Heart Pathway: 1. Left Pulmonary Vein 2. Left Atrium Bicuspid Valve 3. Left Ventricle Aortic Semilunar Valve 4. Aorta 5. All Other Tissues

Cardiac Valves [4 main valves] • When the heart is relaxed… – Blood passively

Cardiac Valves [4 main valves] • When the heart is relaxed… – Blood passively fills atrium – Flows right past tricuspid / bicuspid valves – Semilunar Valves remain shut • When the heart contracts (pumps)… – Tricuspid / Bicuspid valves swing up and shut – Blood ejected out of ventricle – Semilunar Valves open up

The Anatomy of the Heart The Valves of the Heart

The Anatomy of the Heart The Valves of the Heart