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