Which features are described as prominent muscular ridges that extend along the inner surface of the right auricle and across the adjacent anterior wall of the right atrium?
A) chordae tendineae
B) foramina ovale
C) papillary muscles
D) pectinate muscles
E) trabeculae carneae

Question

Quizplus · Accepted Answer

The features described are pectinate muscles, which are prominent muscular ridges that extend along the inner surface of the right auricle and across the adjacent anterior wall of the right atrium. Chordae tendineae are fibrous cords that connect the atrioventricular valves to the papillary muscles. Foramina ovale is a hole in the interatrial septum of the fetal heart. Papillary muscles are conical muscular projections from the ventricular walls to which the chordae tendineae are attached. Trabeculae carneae are irregular muscular ridges and columns that are found in both the atria and ventricles of the heart.

Which Features Are Described as Prominent Muscular Ridges That Extend