Biology > STUDY GUIDE > Arizona College BIO 202 Chapter20_Heart_InteractiveNotes. (All)

Arizona College BIO 202 Chapter20_Heart_InteractiveNotes.

Document Content and Description Below

Chapter 20 Interactive Notes – The Heart The Heart • Learning Outcomes o 20-1 Describe the anatomy of the heart, including vascular supply and pericardium structure, and trace the flow of bloo... d through the heart, identifying the major blood vessels, chambers, and heart valves. o 20-2 Explain the events of an action potential in cardiac muscle, indicate the importance of calcium ions to the contractile process, describe the conducting system of the heart, and identify the electrical events associated with a normal electrocardiogram. o 20-3 Explain the events of the cardiac cycle, including atrial and ventricular systole and diastole, and relate the heart sounds to specific events in the cycle. o 20-4 Define cardiac output, describe the factors that influence heart rate and stroke volume, and explain how adjustments in stroke volume and cardiac output are coordinated at different levels of physical activity. An Introduction to the Cardiovascular System • The Cardiovascular System consists of: o A pump (the __heart________moves ~8000 liters/day) o A conducting system (____blood vessels_________________) o A fluid medium (__blood_____________) • The ___pulmonary________________ Circuit o Carries blood to and from gas exchange surfaces of lungs • The ___systemic______________Circuit o Carries blood to and from the body o Blood alternates between pulmonary circuit and systemic circuit Three Types of Blood Vessels 1. ____arteries______________ carry blood ___away________ from the heart 2. veins______________carry blood __to_____ the heart 3. _capillaries_____________(aka exchange vessels) are networks between _arteries________ and _veins__________ Four Chambers of the Heart 1. ___right atrium___________________________ collects blood from systemic circuit 2. ___right ventricle___________________________ pumps blood to pulmonary circuit 3. ________left atrium_______________________ collects blood from pulmonary circuit 4. _____left ventricle_________________________ pumps blood to systemic circuit 20-1 Anatomy of the Heart The Heart o Great veins and arteries at the ____base_________ o Pointed tip is ___apex___________ o Surrounded by ___ pericardial__________ sac o Sits between two pleural cavities in the __ mediastinum________________ [Show More]

Last updated: 2 years ago

Preview 1 out of 20 pages

Buy Now

Instant download

We Accept: