About the external features of the heart, which of the following descriptions are correct?
A.The cardiac base (心底) is formed by the left atrium and right atrium. B.The cardiac apex (心尖) is formed by the right ventricle. C.The right border of heart is formed by the right atrium and right ventricle. D.The left border of the heart is formed by the left ventricle and left auricle (左心耳). E.The inferior border of the heart is formed by the right ventricle and cardiac apex.正确答案ADE
