Smooth muscle, connective tissue, and cartilage of primary bronchi are derived from which of the following sources?
A、Visceral mesoderm;
B、Endoderm;
C、Ectoderm;
D、Mesoderm of pharyngeal arches 4 and 6
发布时间:2025-12-22 03:06:09
A、Visceral mesoderm;
B、Endoderm;
C、Ectoderm;
D、Mesoderm of pharyngeal arches 4 and 6