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The pectinate muscles (musculi pectinati) ... Atlas image: ht_rt_atrium at the University of Michigan Health System - "Right atrium, internal structure, ...
The crista terminalis provides the origin for the pectinate muscles. [citation needed] The sinoatrial node is located in the superior part of the crista terminalis at the junction of the right atrium, and superior vena cava. [2]: 60
The trabeculae carneae and the papillary muscles make up a significant percentage of the ventricular mass in the heart (12-17% in normal human adult hearts), and are correlated with ventricular end diastolic volume. [5] Trabeculae ratios of capillary-to myocyte differ between the walls of the right and left ventricle.
The right atrial appendage is a pouch-like extension of the right atrium and is covered by a trabecula network of pectinate muscles. The interatrial septum separates the right atrium from the left atrium; this is marked by a depression in the right atrium – the fossa ovalis. The atria are depolarised by calcium. [6]
Image of the anus affected by hemorrhoids. The pectinate line, which separates the internal from the external anus, can be seen. Anal fissures are tears in the external lining of the lining (mucosa) of the anus.
It connects to the pectineus muscle on its ventral and superior aspects. [1] It connects to the rectus abdominis muscle, and the abdominal internal oblique muscle, of the anterior abdominal wall. [1] The pectineal ligament is usually around 6 cm long in adults. [2] It is close to the major vasculature of the pelvis, including external iliac ...
Pectinate may refer to: Pectinate line , a line which divides the upper two thirds and lower third of the anal canal Pectinate muscles , parallel ridges in the walls of the atria of the heart
The pectineal line of the pubis (also pecten pubis) is a ridge on the superior ramus of the pubic bone.It forms part of the pelvic brim.. Lying across from the pectineal line are fibers of the pectineal ligament, and the proximal origin of the pectineus muscle.