Chapter 21, Problem 4RFT

Summary Introduction

To review:

Match the term coronary circulation with the most closely related descriptions given below:

Vein to the left atrium

Covers outer surface of the heart

Supplies blood to heart muscle

Lines inner surface of fibrous pericardium

Slow heart rate

Functional syncytium

Muscular wall of the heart

Relaxation phase of the cardiac cycle

Vein to the right atrium

Contraction phase of the cardiac cycle

Introduction:

The heart supplies blood to all parts of the body through two circulations—pulmonary and systemic. The systemic circulation ensures a supply of blood to all the body organs except the lungs. The pulmonary circulation takes place between the heart and the lungs. In this way, the blood is oxygenated and returns to the heart. There is another kind of blood circulation, known as coronary circulation.