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