Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Flow of Blood Through Heart Quiz Pick up your heart diagram from the front cart. Review the path blood flows through the body. You will start with the blood returning back from the body to the heart in the Venae Cavea.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Objectives Review the flow of blood through the heart. Identify the characteristics and functions of arteries, veins, and capillaries. Distinguish different characteristics of the blood vessels. Identify vital signs, and practice taking classmates pulse and respirations.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Conduction System of the Heart Autonomic nervous system controls heart rate Therefore, no voluntary control over heart Special heart tissue conducts electrical impulses Stimulate different chambers to contract in correct order

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Systole and Diastole Heart chambers alternate between: Relaxing to fill Contracting to push blood forward Relaxation phase is diastole Contraction phase is systole The Cardiac Cycle: Phases, Explanation & Terms - Anatomy & Physiology Video#lesson The Cardiac Cycle: Phases, Explanation & Terms - Anatomy & Physiology Video#lesson

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Path of the Conduction System Sinoatrial (SA) node, or pacemaker, is where electrical impulse begins From SA node a wave of electricity travels through atria Causing them to contract, or go into systole

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.7 – The conduction system of the heart.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.8 – An electrocardiogram (EKG) wave.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Blood Vessels Pipes that circulate blood through body Three types: Arteries Capillaries Veins Lumen is the channel within blood vessels

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.9 – Comparative structure of arteries, capillaries, and veins.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Arteries Large thick-walled vessels, smooth muscles Branch into progressively smaller vessels called arterioles Carry blood away from heart Coronary arteries supply myocardium

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.10 – The coronary arteries.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.11 – The major arteries of the body.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Capillaries Tiny, thin-walled blood vessels called a capillary bed Connecting unit between arteries and veins Location for: Oxygen and nutrients to diffuse out Carbon dioxide and wastes to diffuse in

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.9 – Comparative structure of arteries, capillaries, and veins.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Veins Thinner walls than arteries Much lower pressure system than in arteries valves skeletal muscles assist Smallest veins are called venules Carry blood towards the heart

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.12 – The major veins of the body.

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 5.9 – Comparative structure of arteries, capillaries, and veins. capillaries-more.html#lesson

Medical Terminology: A Living Language, Fourth Edition Bonnie F. Fremgen and Suzanne S. Frucht Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. MY o