Prompt: What cells are components of Myocyte Conduction Pathway, neurons or myocardiac cells?
Gemini 2.5 Pro: The Myocyte Conduction Pathway (also known as the Cardiac Conduction System) is primarily composed of specialized myocardial cells (heart muscle cells), not neurons.💖
These cells are distinct from the contractile cardiac myocytes but are still muscle tissue adapted for generating and rapidly conducting electrical impulses.2
⚡ Components of the Conduction Pathway
The specialized conducting cells form the following major structures:
Sinoatrial (SA) Node: The heart’s natural pacemaker, located in the right atrium.
Atrioventricular (AV) Node: Located near the center of the heart, it briefly delays the impulse.6
Bundle of His (Atrioventricular Bundle)
Bundle Branches (Right and Left)
Purkinje Fibers9
While the entire pathway is made of specialized myocardial cells, its activity (such as heart rate) is heavily regulated by the autonomic nervous system, which does use neurons (nerves) that innervate the conduction system, particularly the SA and AV nodes. These neurons modulate the rate and force of contraction but are not the primary conductors of the impulse that triggers the heartbeat.
参考
Cardiac Pacemakers – Heart Rate and Electricity by Thad Wilson, PhD Lecturio https://app.lecturio.com/#/lecture/s/7292/25294
彼の手法(pars plana vitrectomy)が確立される以前にも、1960年代にデビッド・カスナー(David Kasner)医師らによる「オープン・スカイ法」(角膜を大きく切開して硝子体を除去する方法)などの試みはありましたが、眼球に小さな穴を開けて手術を行うマヘマー医師の低侵襲な手法は画期的であり、彼は「現代網膜手術の父」と呼ばれています。この最初の手術により、患者の視力は大幅に改善したとされています。