Anatomy of the Heart❤️ || Surfaces, Chambers, Blood supply, Right and left dominance

Anatomy of the Heart ❤️🩺💧

Surfaces
The heart has several surfaces:
Anterior Surface: Mostly formed by the right ventricle.
Inferior Surface: Comprised mainly of the left ventricle and a small portion of the right ventricle.
Diaphragmatic Surface: Lies against the diaphragm and is formed mainly by the left ventricle.
Right Pulmonary Surface: Formed by the right atrium.
Left Pulmonary Surface: Formed by the left ventricle and a small part of the left atrium. Chambers
The heart consists of four chambers:
Right Atrium: Receives deoxygenated blood from the body via the superior and inferior vena cavae.
Right Ventricle: Receives blood from the right atrium and pumps it to the lungs for oxygenation.
Left Atrium: Receives oxygenated blood from the lungs via the pulmonary veins.
Left Ventricle: Receives blood from the left atrium and pumps it to the rest of the body through systemic circulation.

Blood Supply
The heart is supplied by the coronary arteries:
Left Coronary Artery (LCA): Divides into the left anterior descending artery (LAD) and the circumflex artery (CX). Supplies blood to the left atrium, left ventricle, interventricular septum, and portions of the right ventricle.
Right Coronary Artery (RCA): Supplies blood to the right atrium, right ventricle, sinoatrial (SA) and atrioventricular (AV) nodes, and portions of the interventricular septum.

Right & Left Dominance
Right Dominance: When the posterior descending artery (PDA), a branch of the RCA, supplies the inferior part of the interventricular septum. This occurs in about 85% of individuals.
Left Dominance: When the PDA is a branch of the LAD artery, which supplies the posterior part of the interventricular septum. This occurs in about 8-12% of individuals.

Summary
The heart, a vital circulatory system organ, has distinct surfaces and chambers. Blood supply is provided by the coronary arteries, with variations in dominance affecting the distribution of blood to different areas of the heart. Understanding the anatomy of the heart is crucial for comprehending its function and potential clinical implications


⏰ Chapter Timestamps:

00:00 - Introduction
00:32 - Surfaces of the Heart
04:45 - Boarders of the Heart
05:45 - Right Atrium
08:58 - Right Ventricle
12:30 - Left Atrium
14:04 - Left Ventricle
16:14 - Aterial Supply
23:50 - Right & Left Dominance
25.30 - Venous Drainage of the hearth.