Parts of the Heart The heart is under the rib cage, to the left of your breastbone (sternum) and between your lungs. On the outside, the heart is made of muscle. The strong muscular walls contract (squeeze), pumping blood to the arteries. The cardiovascular system is made up of your...
Other key functions of the heart include: Maintaining blood pressure Controlling the rhythm and speed of your heart rate How does the heart function? The heart pumps blood through a system of blood vessels called the circulatory system. Blood vessels are of three types: arteries, capillaries, ...
Looking at the outside of the heart, you can see that the heart is made of muscle. The strong muscular walls contract (squeeze), pumping blood to the arteries. The major blood vessels connected to your heart are the aorta, the superior vena cava, the inferior vena cava, the pulmonary ar...
Epicardium: The outer layer of the wall of the heart. Myocardium: The muscular middle layer of the wall of the heart. Endocardium: The inner layer of the heart. Cardiac Conduction Cardiac conduction is the rate at which the heart conducts electrical impulses. Heart nodes and nerve fibers play...
Heart (vertebrate) The muscular pumping organ of the cardiovascular system. The heart typically lies ventrally, near the anterior end of the trunk; it is ventral and medial to the gills in fish and at the base of the neck or in the chest region of tetrapods. In humans it is located be...
The contractions of the various parts of the heart have to be carefully synchronized. It is the prime function of the electrical conduction system to ensure this synchronization. The atria should contract first to fill the ventricles before the ventricles pump the blood in the circulation. The ...
The intrinsic conduction system of the heart is comprised of several specialized subpopulations of cells that either spontaneously generate electrical activity (pacemaker cells) or preferentially conduct this activity throughout the chambers in a coordinated fashion. This chapter will discuss the details of...
Conduction System of Heart The cardiac conduction system is comprised of specialized “pacemaker” cells that spontaneously generate electric activity and conduction pathways that propagate it throughout the heart in a coordinated fashion, generating action potentials (APs) in individual cardiac myocytes. ...
The system in order to remedy the heart failure patient who suffers from heart expansion of various levels, method, and the device are offered. Heart expansion, using magnetic force, remedies the anatomy structure of the heart by re-forming. That kind of remolding, in order to increase the ...
Parts of the Heart The heart is under the rib cage, to the left of your breastbone (sternum) and between your lungs. On the outside, the heart is made of muscle. The strong muscular walls contract (squeeze), pumping blood to the arteries. The cardiovascular system is made up of your...