67: The Heart Quizellenj2022-12-02T15:59:07-05:00 Please sign up for the course before taking this quiz. 1. The contraction of the chambers is what makes the lub dub sound of the heart beat.1 True False 2. Another name for the tricuspid valve is the mitral valve.1 True False 3. Which of these blood vessels brings low-oxygen blood from the body into the heart?1 vena cava aorta pulmonary arteries 4. What does the SA node do?1 Receives an electrical signal and then transfers it on to the ventricles. Sends out an electrical signal that initiates contraction. Causes the heart rate to speed up when you exercise. 5. What is the name of the membrane bag that surrounds the heart?1 septum pericardium myocardium 6. The heart is actual two separate pumps sitting side by side.1 True False 7. What is the technical term for phase of the cardiac cycle when the chambers are contracting?1 diastole systole 8. The inside of the heart contains lots of “strings.” What do these strings do?1 They keep the two sides of the heart together. They anchor the valve flaps to the walls of the ventricles. They help the heart to contract. They tie the atria to the ventricles. 9. Which blood vessel looks like a giant arch going over the top of the heart?1 pulmonary vein superior vena cava aorta pulmonary artery 10. The word root “pulmo” is always associated with the lungs.1 True False 11. What do the coronary arteries do?1 Go off the top of the aorta and take blood to the head and arms. Receive blood from the lungs. Supply the cells of the heart muscle tissue. Take blood to the lungs. 12. Where does the blood from the pulmonary arteries go?1 to the lungs to the body into the right atrium into the left atrium 13. The definition of a “vein” is that it carries blood that is low in oxygen.1 True False 14. What does the word root “brachio” mean?1 blood arms head heart 15. Which chambers have a semilunar valve at the top?1 ventricles atria 78: Muscles (as organs) 80: Endocrine system : Overview Back to: 67: The Heart