Fetal development of the human trapezius and sternocleidomastoid muscles

• 발행기관: 대한해부학회
• 저자명: Kwang Ho Cho Ichiro Morimoto Masahito Yamamoto Shinya Hanada Gen Murakami Jose Francisco Rodrí guez-Vá zquez Shinichi Abe
• 간행물 정보: 『Anatomy and Cell Biology』Vol.53(4), 405~410쪽, 전체 6쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2020.12.30

영문 초록

At present, there is no photographic evidence of splitting of the trapezius and sternocleidomastoid muscles (SCMs), which share a common anlage that extends caudally toward the limb bud in the embryo at a length of 9 mm. Therefore, the aim of the present study was to identify which structures divide the caudal end of the common anlage at the first sign of splitting into two muscles. In 11 mm-long specimens, the SCM and trapezius muscles were identified as a single mesenchymal condensation. In 15 and 18 mm-long specimens, the SCM and trapezius muscles were separated and extended posteriorly and lymphatic tissues appeared in a primitive lateral cervical space surrounded by the SCM (anterior). In 21 mm-long specimens, the lymphatic vessels were dilated and the accompanying afferents were forming connections with the subcutaneous tissue through a space between the SCM and trapezius muscles. In 27 mm-long specimens, cutaneous lymphatic vessels were evident and had entered the deep tissue between the SCM and trapezius muscles. Vascular dilation may be viewed as a result of less mechanical stress or pressure after muscle splitting.

목차

Introduction

Materials and Methods

Results

Discussion

ORCID

Author Contributions

Conflicts of Interest

References

키워드

Fetus Muscle Embryology Lymphatic tissues Anatomy