Histopathological changes in the electrical conduction of cardiac nodes after acute myocardial infarction in dogs and horses, compared with findings in humans: A histological, morphometrical, and immunohistochemical study.

Background And Aim: The heart conduction system is responsible for the occurrence of various types of cardiac arrhythmia. This study aimed to histologically and morphometrically describe damaged cardiac nodes during acute myocardial infarction and to compare them with normal tissues in dogs and horses.

Materials And Methods: This study describes the morphometry of cardiac nodes in five dogs and five elderly horses that succumbed to sudden cardiac death (SCD).

Comparison of coronary arteries morphometry and distribution in bovines with humans and other animal species.

Background: The left coronary artery (LCA) in the bovines is more developed than the right.

Aim: The objective of the study is to describe the bovine coronary system from a morphological point of view, including the morphometry and its distribution.

Methods: Arciform suture with 2.

Morphological evaluation of the distal medial striate artery. A study with cadaveric material.

Objective: To evaluate the morphology of the distal medial striated artery, taking into account biometric variables useful for clinical and surgical management.

Methods: A descriptive transversal study was performed with a sample of brains, who underwent autopsy at the Institute of Legal Medicine and Forensic Sciences of Bucaramanga-Colombia, which were evaluated using the perfusion technique of vascular structures with polyester resin.

Results: The distal medial striated artery was presented in 1.

Morphological variations of the conduction system in the atrioventricular zone and its clinical relationship in different species.

Atrioventricular node is responsible for delaying the passage of the electrical impulse to ventricles in order to protect them from fast depolarizations coming from the atria. The importance of this study is to identify the morphological variations of the components of atrioventricular zone that affect the conduction system and its clinical relationship in different species of mammals. We analyzed ten human hearts, nine from horses, eight from pigs, and five from dogs without a clinical history of cardiac pathologies.

[Tensor veli palatini and tensor tympani muscles: anatomical, functional and symptomatic links].

Introduction And Objectives: Temporomandibular disorders are associated with symptoms such as tinnitus, vertigo, sensation of hearing loss, ear fullness and otalgia. The connection and dysfunction of the tensor tympani and tensor veli palatini muscles seems to be associated with the aforementioned symptoms. We seek to demonstrate and explain this connection through the morphometry of these structures.