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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 |