2295256
Description
Flashcards by Megan Clamp, updated more than 1 year ago
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Created by Megan Clamp
about 9 years ago
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| Question | Answer |
| Name the 2 different types of valve in the heart | SEMI LUNAR ATRIOVENTRICULAR |
| WHICH VENTRICLE IS THICKER ? | LEFT , because this ventricle has to pump blood around the rest of the body whereas the other side only pumps blood to the lungs. |
| What are the 2 main arteries ? | PULMONARY ARTERY AORTA |
| WHAT ARE THE 2 MAIN VEINS? | PULMONARY VEIN VENA CAVA |
| WHAT CREATES THE 'LUB' SOUND IN A HEART BEAT? | WHEN BLOOD IS FORCED AGAINST THE CLOSED ATRIOVENTRICULAR VALVES. |
| WHAT DOES THE SINO-ATRIAL NODE DO? | This group of cells contract first setting the rhythm for all the other heart cells. it creates an electrical impulse and cause a wave of electrical activity, spreading across the atria causing them to contract simultaneously . |
| why does the electrical impulse in the heart not go straight down from the top of the heart to the bottom? | If this happened the blood would go to the bottom of the ventricle instead of going up towards the arteries. |
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