Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
the heart questions
| Question | Answer |
|---|---|
| the second heart sound is produced by the closing of what valves? | The semilunar valves ( aortic and pulmonary) |
| What is the back up pacemaker if the first one should fail? | The A-V node |
| when pacemaker cells are polarized... | the concentration of sodium ions is higher on the outside of the cell than on the inside and cont concentration of potassium is higher inside than out. |
| If the A-V node was functioning as the pacemaker, what would be seen on the EKG? | No P-wave |
| which layer of the heart prevents clots from forming in the AV Valves? | The endocardium |
| name 3 vessels that carry deoxygenated blood | Coronary sinus, pulmonary arteries and the vena cavas. |
| what carries deoxygenated blood through the abdominal cavity? | The inferior vena cava |
| When the ventricles are filling, the ___________ valves are closed. | semilunar valves (aortic and pulmonary) |
| The loose fitting sac around the heart is called | the pericardium |
| The heart is self stimulating because of special _______ channels that are always open. | Sodium |
| the outer layer of the heart wall is called | the epicardium and the visceral pericardium |
| what 2 structures prevent the cusps of the AV valves from swinging up into the atria? | papillary muscles and the chordae tendineae |
| What valves are closed during ventricular systole? | the AV valves (tricuspid and mitral) |
Created by:
688472874
Popular Physiology sets