Affordable Access

deepdyve-link
Publisher Website

Morphological study of the sinus node and its artery in yak.

Authors
  • Duan, Deyong1
  • Yu, Sijiu
  • Cui, Yan
  • 1 Laboratory of Animal Anatomy & Tissue Embryology, Department of Basic Veterinary Medicine, Faculty of Veterinary Medicine, Gansu Agricultural University, Lanzhou, Gansu, China. , (China)
Type
Published Article
Journal
Anatomical record (Hoboken, N.J. : 2007)
Publication Date
Dec 01, 2012
Volume
295
Issue
12
Pages
2045–2056
Identifiers
DOI: 10.1002/ar.22591
PMID: 23044916
Source
Medline
License
Unknown

Abstract

The sinus node of yak has been studied by the histological methods and transmission electron microscopy. The sinus node artery of yak was also determined by the injection-corrosion casting technique, the angiography, and histological methods. The results showed that the sinus node of yak contained an extensive framework of collagen and two main type cells: pacemaker cells (P cells) and transitional cells (T cells). The P cells had a perinuclear clear zone, contained less myofibrils, and appeared smaller mitochondria than T cells. The T cells were longer and slender than P cells, and had a variety of shapes. At the periphery of sinus node there were many nerve fibers and ganglions. Gap junction did not reveal reaction with anti-connexin43, but it was detected by electron microscopy in the central part of sinus node of yak. The sinus node artery of yak originated from left coronary artery more frequently (98%) than by right (2%). The artery located at the periphery of sinus node. It had an internal elastic membrane throughout its course, and a large nerve bundle was found running in a longitudinal direction.

Report this publication

Statistics

Seen <100 times