CARDIOVASCULAR SYSTEM.docx - Which of the following is associated with the atria Pectinate muscles(the ridges on the walls of the atriums There are no

CARDIOVASCULAR SYSTEM.docx - Which of the following is...

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Which of the following is associated with the atria? - Pectinate muscles (the ridges on the walls of the atriums There are no skeletal muscles in the heart! The tendons help the ventricles stay closed when they have to be closed. Which heart chamber would be most affected by cardiac tamponade? (abnormal accumulation of fluid around heart, puts pressure on chambers) - Right ventricle,, because the heart tilts a bit to the left, so more of the fluid affects the right ventricle because of gravity. Pathway of blood through heart A RTERIES CARRY BLOOD A WAY- most of the time its oxygenated Septa → walls between atria Where are the pectinate muscles? - In the walls of the atria Which are the grooves outside of the heart? - Sulci - They mark boundaries between chambers on outside of heart 1. Anterior coronary sulcus 2. Posterior coronary sulcus 3. Anterior interventricular sulcus 4. Posterior IV sulcus
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- The coronary ones divide atria from ventricles - The IV ones divide ventricles Cardiac muscles are attached to → protein fibers ECG Initiate → p wave Prepare for contraction → repolarization Contraction of heart → t wave
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1. Any abnormal cardiac contraction pattern is called an arrhythmia, including atrial flutters and ventricular fibrillation - True 2. When a patient is in v-fib why does the doctor yell clear before using the defibrillator? - Bc its a very large electrical charge that could hurt other people 3. When would all four valves be closed? a. Right before the ventricles contract. Pressure builds in chambers and closes AV valves, but pressure isnt high enough to open the semilunar valves 4. Atrial pressure is at its highest when: a. When the AV valves are open. Bc the presure is the highest when they contract by pushing blood into the ventricles,, the AV valve has to be open for that to happen 5. The coronary sinus collects blood from all the other veins draining the myocardium and returns this blood to the right atrium 6. Left coronary blockage would cause the most damage in the heart 7. The heart does receive signals from the nervous system 8. When the ventricles relax, the blood in the aorta flows back toward the heart, filling the coronary vessels 9. LAST PIC OF CLICKER TUESDAY IS D. →
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  • Spring '08
  • Washo-Krupps

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