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