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9. Endocardium contains coronary arteries. 10. Mitral valve is a bicuspid valve. 11. Subclavian vein contains carbon di oxide rich blood. 12. Carotid arteries provide oxygen rich blood to the heart. 13. S.A. Node is supplied by right coronary artery 14. Coronary arteries are arising from Superior vena cava. 15. Aortic valve is a semilunar valve. 16. Location of Mitral valve is between left atrium & right atrium 17. Pulmonary arteries bring the blood from lung to the left atrium 18. Stimulation of sympathetic nervous system increases the heart rate 19. S1 Heart sound is related to the Mitral valve. True or false
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9. Answer is false because coronary arteries arises from aorta and are branched into left and right coronary arteries. They supply blood in and out of cardiac muscle.

10. Yes it is true. Mitral valve also called as bicuspid valve because it is a valve with two flaps in the heart between left atrium and left ventricle.

11. Yes it is true. Subclavian vein carries deoxygenated blood which contains carbondioxide from upper extremities of our body to heart.

12. No it is false because carotid arteries are the blood vessels present in the neck and they divide in the neck into two branches as left and right carotid arteries they supply blood to brain, neck and face.

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