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