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- Heart anatomy. The heart has five surfaces: base (posterior), diaphragmatic (inferior), sternocostal (anterior), and left and right pulmonary surfaces. It also has several margins: right, left, superior, and inferior
- Heart valves. Heart valves separate atria from ventricles, and ventricles from great vessels. The valves incorporate two or three leaflets (cusps) around the atrioventricular orifices and the roots of great vessels.
- Blood flow through the heart. The blood flow through the heart is quite logical. It happens with the heart cycle, which consists of the periodical contraction and relaxation of the atrial and ventricular myocardium (heart muscle tissue).
- Coronary circulation. The heart must also be supplied with oxygenated blood. This is done by the two coronary arteries: left and right. Heart muscles work constantly (thank goodness!)
- Introduction
- Anatomy
- Blood Supply
- Venous Drainage and Lymphatics
- Nerve Supply
- Heart Conduction System
- Relevance to Physiotherapy
The heart is a muscular organ that serves to collect deoxygenated blood from all parts of the body, carries it to the lungs to be oxygenated and release carbon dioxide. Then, it transports the oxygenated bloodfrom the lungs and distributes it to all the body parts 1. The heart pumps around 7,200 litres of blood in a day throughout the body. 2. The ...
The heart is a conical hollow muscular organ situated in the middle mediastinum and is enclosed within the pericardium. It is positioned posteriorly to the body of the sternum with one-third situated on the right and two-thirds on the left of the midline. The heart measures 12 x 8.5 x 6 cm and weighs ~310 g (males) and ~255 g (females). It pumps bl...
The heart is supplied by two coronary arteries: 1. Left main coronary artery carries 80% of the flow to the heart muscle. It is a short artery that divides into two branches 1. Left anterior descending artery that supplies anterior two-thirds of the inter-ventricular septum and adjoining part of the left ventricular anterior wall 2. Circumflex coro...
Venous drainage is via the variable coronary veins and the coronary sinus. The lymphatic vesselsdrain mainly into: 1. Brachiocephalic nodes, in front of brachiocephalic veins 2. Tracheobronchial nodes, located at the distal end of the trachea.
The main control of the heart resides with the medulla oblongata.There is an area called the cardioacceleratory centre, or pressor centre, in the upper part of the medulla oblongata, and an area called the cardioinhibitory centre, or depressor centre, in the lower part. Together they are called the cardioregulatory centre, since they interact to co...
An electrical conduction system regulates the pumping of the heart and timing of contraction of various chambers. Heart muscle contracts in response to the electrical stimulus received system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blood. Among the major elements...
Education- Educating your clients re heart health, both for those with a heart condition and those without. Inform them of the hearts health importance, because it pumps blood and oxygen to all of...
Learn about the anatomy and function of the heart, the muscular organ that pumps blood through the body. Explore the chambers, valves, vessels, and conducting system of the heart with articles, videos, and quizzes.
Oct 3, 2022 · Anatomy of the heart: anatomical illustrations and structures, 3D model and photographs of dissection. This interactive atlas of human heart anatomy is based on medical illustrations and cadaver photography. The user can show or hide the anatomical labels which provide a useful tool to create illustrations perfectly adapted for teaching.
Overview. The cardiovascular system consists of the heart, which is an anatomical pump, with its intricate conduits (arteries, veins, and capillaries) that traverse the whole human body carrying blood. The blood contains oxygen, nutrients, wastes, and immune and other functional cells that help provide for homeostasis and basic functions of ...
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Sep 30, 2020 · Learn about the structure and function of the human heart, the organ that pumps blood throughout the body. Explore the chambers, valves, blood vessels, electrical system, and gas exchange of the heart.
The heart is located behind the sternum; however, it normally lies “down” with the apex pointing toward the left side. This chapter provides a succinct overview of the gross anatomy of the heart and its blood vessels as well as some clinical aspects pertinent to its structure.
