please answer these questions that I wrote them here and the once that I uploaded them as a pictures
2. Which of the following is NOT a function of the cardiovascular system:
– temperature regulation
– pH regulation secretion transportation
– protection against microorganism
– nutrient storage
3. As a molecule of blood travels through the heart, it would pass through the ________ valve(s) prior to aortic valve.
– tricuspid
– all choices are correct
– pumonary
– bicuspid
4. The _______ travels through the coronary sulcus.
– marginal branch
– circumflex artery
– all choices are correct
– anterior interventricular artery
5. Cells within the ______ initiate the heartbeat.
– sinoatrial node
– foramen ovale
– atrioventricular node
– all choices are correct
6. Blood traveling from the heart to the right leg will travel through the _________
– brachiocephalic vein
– right common carotid artery
– all choices are correct
– brachiocephalic trunk
– descending aorta
7. Platelets are the only component necessary for blood to clot.
– true
– false
8. The QRS complex represents:
– ventricular and atrial depolarization
– no choices are correct
– ventricular repolarization
– ventricular depolarization
– atrial depolarization
9. Which statement is FALSE?
– The right atrioventricular valve contains three leaflets.
– Intercalated discs attach one cardioctye to another cardiocyte.
– Erythrocytes stain light on a histology slide because they do not have a nucleus,
– Cardiocytes contain one centrally located nucleus.
– The conducting fibers located within the interventricular septum are known as the purkinje muscles.
10. The ________ collects blood from the coronary circuit, which leads into the right atrium.
– inferior vena cava
– superior vena cava
– coronary sinus
– circumflex artery
– great cardiac vein
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