Taking+a+Closer+Look+at+the+Heart

=**Unit 1 Cells and Systems**=

Chapter 2 Human body systems work independently and together
2.3 The Circulatory and Respiratory Systems


 * 2.3 Taking a Closer Look at the Heart** pg 84

The heart is a muscular organ that pumps throughout your body. Look at page 84 Figure 2.23 to see the human heart. The atria allows the blood to move from your body into your heart, while the ventricles pump the blood out of the heart. The left ventricle has more muscles around it because it pumps blood to your body. The right one pumps blood to your lungs, which is a much shorter distance. Atria walls are thinner because they only have to pump blood into the ventricles.
 * **Questions** || **Answer** ||
 * What is the muscular organ that pumps blood throughout your body? || The Heart ||
 * What does the atria do? || The atria allows blood to move from your body into your heart. ||
 * What do ventricels do? || The ventricles pump the blood out of the heart. ||
 * Why is the muscle around left ventricle larger than the one around the right ventrical? || There is more muscle around left ventircle because it pumps blood to your body whereas the right ventricle pumps blood to your lungs. ||
 * How do left and right ventricels work? || The left and right venticles pump blood out of the heart. ||
 * How are valves and chambers related in location? ||The valves are located inside the chambers. ||
 * Which direction do valves flow? ||Valves flow away from the heart. ||
 * How do left and right ventricels work? || The left and right venticles pump blood out of the heart. ||
 * How are valves and chambers related in location? ||The valves are located inside the chambers. ||
 * Which direction do valves flow? ||Valves flow away from the heart. ||
 * How are valves and chambers related in location? ||The valves are located inside the chambers. ||
 * Which direction do valves flow? ||Valves flow away from the heart. ||
 * Which direction do valves flow? ||Valves flow away from the heart. ||