IDNLearn.com is designed to help you find accurate answers with ease. Get accurate and detailed answers to your questions from our dedicated community members who are always ready to help.

The posterior atrial wall is smooth, but the auricle and anterior wall exhibit obvious muscular ridges, called ______.
Multiple choice question.
a- papillary muscles
b- pectinate muscles
c- chordae tendineae
d- trabeculae carneae