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Bio lab 8
Cardiovascular system
| Question | Answer |
|---|---|
| why are valves between the atria and ventricles needed? | valves prevent backward flow of blood |
| why are valves between ventricles and great arteries needed? | to push blood in the right direction |
| What cellular structures allow for communication between cardiac muscle cells? | gap junction |
| what are the 2 additional names for the LEFT atrioventricular valve? | mitral valve & bicuspid valve |
| What arteries of the circulatory system carry deoxygenated blood? | pulmonary arteries |
| what 3 veins deliver blood to the right atrium of the heart? | superior vena cava, inferior vena cava, & coronary sinus |
| What great vessel of the heart has the thickest wall? | Aorta |
| What chamber of the heart has the thickest wall? | Left ventricle |
| What 2 arteries deliver oxygenated blood into the myocardium? | right & left coronary arteries |
| What cardiac conduction area of the heart is know as the "pacemaker" of the heart? | Sinoatrial node |
| What ventricular action is occurring when the atria are contracting? | diastolic; ventricle is relaxing |
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yulissalira