The Cardiovascular System Human Heart
Image - http://www.thewellingtoncardiacservices.com/the-heart-cardiovascular-system.asp
Cardiovascular System
• Cardio = pertaining to the heart
• Vascular = pertaining to a transport system– Blood vessels
http://www.istockphoto.com/stock-photo-6155504-cardiovascular-system.php
Cardiovascular System Functions
Transportation
Homeostasis
Circulatory Pathways
• Pulmonary Circulation• Systemic Circulation
• Examples:
– Renal Circulation– Hepatic Portal System– Coronary Circulation
Functions of the Heart
• Center of the cardiovascular system, the heart = pump
• Connects to blood vessels that transport blood between the heart and other body tissues.
• Arteries and veins entering and leaving the heart are called the great vessels.
http://www.fallingpixel.com/human-heart-3d-model/11334
Functions of the Heart
• Ensures the unidirectional flow of blood through both the heart and the blood vessels.
• Acts like two independent, side-by-side pumps that work independently but at the same rate.
• Develops blood pressure through alternate cycles of heart wall contraction and relaxation.
Yale University - School of medicine
Location of the Heart
• Major body cavities
• Thoracic cavity
http://wellnessadvocate.com/?dgl=10463
http://apbrwww5.apsu.edu/thompsonj/Anatomy%20&%20Physiology/2010/2010%20Exam%20Reviews/Exam%201%20Review/Fig%201.9%20%20The%20Body%20Cavities.htm
Figure 12.2a
Pericardium
• Pericardium – aka. Pericardial sac– Fluid filled sac that
surrounds the heart and proximal ends of the great vessels
http://www.cardiac-risk-assessment.com/heart-information/your-pericardium
http://academic.amc.edu/martino/grossanatomy/site/NURSES/TUTORIALS/Heart/Pericardium.htm