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7-17 heart
| Question | Answer |
|---|---|
| What innervates the diaphragm and pericardial sac? | Phrenic nerve |
| What is buildup of the fluid in the pericardial sac? | Tamponade |
| What does the ligamentum arteriosum? | Connects aortic arch and pulmonary trunk; bypasses lungs |
| What artery and vein supply the percardium? | Pericardiophrenic artery and vein |
| What is most of the anterior heart made of? | Right ventricle |
| What is most of the posterior heart made of? | Left atrium |
| What is the fossa ovale? | Between atria; closes at birth |
| What kind of blood goes into the right atrium? | Deoxygenated |
| What are the muscle fibers in the atrium? | Pectinate muscles |
| What is the wall between the atrium? | Interatrial septum |
| Where do the pectinate muscles originate? | Crista terminalis |
| What three vessels flow into the right atrium? | Superior vena cava, inferior vena cava, opening of coronary sinus |
| Where is the right AV valve/tricuspid value located? | Between the right atrium and ventricle |
| What muscle attaches to the chordea tendineae? | Papilllary muscle |
| What muscle prevents the valves from closing too far? | Papillary muscle |
| What connected the papillary muscles with the interventricular septum? | Moderator band |
| What ventricle is the moderator band in? | Right |
| What valve goes from right ventricle to the pulmonary trunk? | Pulmonary valve |
| What type of blood flows into the left atrium? | Oxygenated |
| What vessels bring blood to the left atrium? | Pulmonary veins |
| Where are the pectinate muscles in the left atrium? | Left auricle |
| What valve is between the left atrium and ventricle? | Left AV valve/Bicuspid/Mitral |
| How many papillary muscles are there on the left AV valve? | 2 |
| Why is the left ventricle bigger than the right? | Ejects blood to the rest of the body |
| Where does blood go after it leaves the left ventricle via the aortic valvue? | Ascending aorta |
| What is the pacemaker of the heart? | SA node |
| Where does the impulse from the SA node go? | To both atria |
| What does the p wave represent? | Atrial depolarization |
| What does the QRS complex represent? | Ventricular depolarization, atrial repolarization |
| What does the t wave represent? | Ventricular repolarization |
| What is referred pain? | Heart doesn't feel pain or temperature |
| What nerve is affected by referred pain? | Ulnar nerve |
Created by:
beranml
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