Chapter 21: The Heart

Question 1

External structures of the heart

Answer 1

-base (superior) -apex (inferior) -R/L atria and auricles -R/L ventricles -anterior and posterior interventricular sulcus -coronary sulcus -aortic arch -pulmonary trunk -superior vena cava -inferior vena cava -R/L pulmonary veins -R/L pulmonary arteries -Branches off aoritc arch: brachiocephalic trunk, L common carotid artery, L subclavian artery -ligamentum arteriosum coronary arteries and veins -RCA: marginal branch of RCA, posterior interventricular branch of RCA -LCA: circumflex branch of LCA, anterior interventricular branch of LCA -small cardiac vein -anterior cardiac vein -great cardiac vein -posterior vein of left ventricle -middle cardiac vein -coronary sinus

Question 2

internal structures of the heart

Answer 2

right atrium and associated structures: -right auricle -pectinate muscles -openings of superior and inferior vena cava and coronary sinus -fossa ovalis -SA and AV nodes Right atrioventricular valve Right ventricle and associated strucutes: -trabeculae carneae -papillary muscles -chordae tendineae -moderator band interventricular septum pulmonary valve left atrium and associated structures: -left auricle -openings for pulmonary veins left atrioventricular valve (mitral) left ventricle and associated structures: -trabeculae carneae -papillary muscles -chordae tendineae aortic valve

Question 3

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Question 10

Question 11