ANATOMY AND PHYSIOLOGY Chapter 12 The Circulatory System
- Slides: 29
ANATOMY AND PHYSIOLOGY Chapter 12 The Circulatory System
The Cardiovascular System Major function is transportation
The Cardiovascular System Transportation of: Oxygen Nutrients Waste hormones
The Heart The heart is located within the Mediastinal cavity of the thoracic cavity
The Heart The heart weighs about One pound
The Heart The heart is: anterior to the thoracic vertebrae Lateral view
The Heart The heart is: superior to the diaphragm
The Heart The heart is: posterior to the sternum
The Heart The heart is: medial to the body
The Heart Apex Pointed irregular tip
The Heart Sac covering the heart pericardium
The Heart Pericardium: 2 layer covering with fluid between the layers called Pericardial fluid
The Heart Inflammation of the pericardium is Pericarditis
The Heart Outer layer of the heart wall epicardium
The Heart Thick, muscular middle layer of the heart myocardium
The Heart Lining of the interior wall Endocardium Very slick. Also lines blood vessels
The Heart Chambers: 4 2 Atria 2 Ventricles
The Heart Chambers: 4 Atria 2 upper chambers Receiving chambers. pumps blood to the ventricles Ventricles 2 lower chambers discharging chambers Pumps blood to the lungs and body
The Heart Septum Wall that divides heart into right and left side Right: Oxygen poor Left: Oxygen rich
The Heart Valves 4
The Heart Valves 4
The Heart Valves 4 2 Atrioventricle valves (2 cusps) Left side. Bicuspid btw left atria and left ventricle also called mitral valve (3 cusps) Right side. btw right Tricuspid atria and right ventricle.
Tricuspid valve bicuspid valve
The Heart Valves 4 2 Semilunar valves Pulmonary semilunar valve (3 cusps) located at beginning Aortic semilunar valve (3 cusps) located at beginning of pulmonary artery of aorta
Superior vena cava 1 Rt Pulmonary artery 2 Pulmonary 3 veins Rt atria 12 aorta 11 Left pulmonary artery 10 Pulmonary veins 9 Left atria 4 8 Left ventricle Rt ventricle 5 Inferior vena cava 6 7 apex
Superior vena cava 18 Pulmonary artery 17 Rt atria 16 1 aorta 2 Pulmonary artery 3 Lt atria 4 Pulmonary veins Pulmonary semilunar valve 15 5 6 bicuspid valve Pulmonary veins Tricuspid valve 14 13 Rt ventricle 12 Inferior vena cava 7 Aortic semilunar valve 8 Lt ventricle 9 septum 10 myocardium 11 pericardium