Human Heart

Human Heart Anatomy and How they Work

Heart The human heart is a specialized; four-chambered that maintains BLOOD flow in the hearth circulatory system. Located in the thorax, it lies left of the body’s mid line, above and in contact with the diaphragm. It is situated immediately behind the breastbone, or sternum, and between the lungs, with its apex tilted to the left. At rest, the hearts pumps about 59 cc (2 oz) of blood per beat and 5 l (5 qt) per minute, compared to120-220 cc (4-7.3 oz) per beat and 20-30 l (21-32 qt) per minute during exercise. The adult human heart is about the size of a first and weighs about 250-350 gm (9 oz).

Human heart

Blood supplies food and oxygen to the cells of the body for their life needs and removes the waste products of their chemical processes. It also helps to maintain a consistent body temperature, circulate hormones, and fight infections. Research indicates that the heart it self produces a hormone like chemical. Brain cells are dependent on a constant oxygen supply, so death ensues shortly if a heart attack halts circulation to the brain. Such attacks are the number-one cause of death in the United States .

Structure and Function of the Human Heart

The heart’s wall has three parts. Muscle tissue, or myocardium, is the middle layer. The inner layer, or endocardium, that lines the inside of the heart muscle consists of a thin layer of endothelial tissue overlying a thin layer of vascularized connective tissue.

The outside of the heart, the epicardium, is in intimate contact with the pericardium; this serous membrane is a closed sac covering the heart muscle’s outside wall. Within the sac, a small amount of fluid reduces the friction between the two layers of tissue. In addition to muscular and connective tissue, the heart muscle contains varying amounts of fatty tissue, especially on the outside. Both anatomically and functionally, the heart is divided into a left and a right half by the cardiac septum. Each half contains two separate spaces: the atrium (pl. atria), or auricle, and the ventricle.

The upper reservoirs, or collecting chambers, are the thin-walled atria, and the lower pumping chambers are the thick-walled ventricles. The total thickness of the ventricular walls is about three times that of the atria; the wall of the hearts left half is approximately twice as thick as that of the right half. The thickness of the heart muscle varies from 2 to about 20 mm (0.1 to 0.8 in). This thickness is correlated with the maximum pressure that can be attained in each chamber.

Cholesterol will break your heart system

Why cholesterol can break your heart system? more understanding about this please find here Cholesterol to break heart system.

Cholesterol can find in some meal like meat and eggs and also can find in several fishes.

Cardiac Defibrillator

What is Cardiac Defibrillator?
Early defibrillation is a critical component in treating cardiac arrest. To use defibrillator and monitor should be people who have trained rescures, first responders, and hospital professionals. In addition to providing the very latest cardiac life support technology, uniform operating system, and trained people can minimized failure and ease of use is maximaized of helping people.

Type of Cardiac Defibrillator:

• Emergency Defibrillator. This device is specaially designed to withstand the crash, tumble and boounce environment of EMS.

Defibrilator

• Monitor Defibrillator. This device is simple, smart and ready to provide clinicans with comprehensive support for resuscitation. Other type is suitable for military and air medical operation.

Small Defibrilator

• Advisory Defibrillator Model. This model offer a family of products to meet your clinical needs from BLS to ACLS. This product range from AED and Advisory defibrillator model to manual units and critical care transport (CCT). Other type with three channel display for ECD and up to two invasive pressure with ranges covering arterial, pulmonary arterial, central venous or intracranial pressure as well as two temperature channels.
• External Defibrillator Device. This model can provide the most reliable and durable medical devices.

Complete Defibrilator

Implantable Cardiac Defibrillator (ICD)
Implantable cardiac defibrillator (ICD) is a small electronic device installed inside the chest to prevent sudden death from cardiac arrest due to life threatening abnormally fast heart rhytms (tachycardias)’ The ICD is capable of monitoring the heart rhythm. When the heart is beating normally, the device remains inactive. If the heart develops a life threatening tachycardia, the ICD delivers an electrical “shock(s)” to the heart to terminate the abnormal rhythm and return the heart rhythm to normal.

Animals With Five Heart

This news may don't know by many people because this knowledge is very ancient. Generally every creature have one heart but Soil Worm have five hearts. So they can't die if you just cut them into 2 until four parts. Each part still have heart so that they still can supply blood to the whole body and this part can alive with create new network on their body, even every part of Soil Worm will make head and tail by them self.

Heart Attack can come any time

We have some experience of heart attack problem on the factory. People who have heart attack history in the previous time, can get heart attack any time when he work on the plant. We don't know when heart attack will come, because many reason can causes heart attack. Hormone stability of this person also can become the trigger of heart attack. Emotional disturbance and work pressure can make their heart attack come if the body condition weak.

Unfortunately we can't detect when heart attack will come, people who have heart attack problem on the previous time usually can feel if their heart attack will come. But the bad news that this people don't tell anyone if their heart attack will come. This condition make the first aid for heart attack can be delayed and too late. The first aid for heart attack if their heart don't beat is make the heart beat using defibrillator. On our plant always provide this tools in the control room to make the first aid for heart attack or other victim don't too late to help.

Congential Disorders

Congential heart disease implies failure of the fetal heart to develop normally, leading to many mechanical imperfections, some fatal and others causing disability. Most birth defects of the heart develop in the first trimester of pregnancy. The pregnant woman, for example, may contract an infection, such as German Measles (rubella), have malnutrition, or smoke heavily, all possibly associated with fetal heat defect.

When congenital defects prevent blood from being pumped normally through the lungs, Cyanosis, or blue baby syndrome, occurs. The congenital abnormality in this case can be an opening between the right and left sides of the heart (septal defect), together with the obstruction of blood flow into the lungs,. The infant body tissue receives unoxygenated blood; the symptom is blue coloration of the skin.

Other congenital defects do not cause cyanosis but may increase the work the heart must do as a result of ineffectual blood shunting or the obstruction of blood flow. For example, a malformation known as patent ductus arteriosus can occur, in which a small fetal vessel connecting the aorta and the pulmonary artery fails to close at birth. As a result, the lungs receive excessive blood flow, and the heart overworks to pump a limited supply of oxygenated blood to other body tissues. The developments in open heart surgery has alleviated many problems that may arise because of these defects.

Avoid of Rheumatic Heart Disease

Heart is the human engine, which have function to circulate blood to all the body tissue and distribute nutrient to all body part needed. If the heart have problem all part of the body can have malfunction because of food supply is disturbed. One of the problems on heart is Rheumatic Heart Disease. Formerly heart disease attach to childhood and adolescence. Rheumatic heart disease can damage to the entire heart system like its membranes.

Rheumatic heart disease happens after have rheumatic fever for along time and affected to the heart function. Rheumatic fever itself result from untreated strep throat. The effect of chronic rheumatic heart fever can damage the heart valves, which have function to open and closed the circulation to the heart. If the valve function have permanent damage, this condition is called as rheumatic heart disease.

The symptons of rheumatic heart disease like breathlessness, fatigue, palpitations, chest pain, and fainting attacks. Rheumatic heart can happen to children which begin from untreated rheumatic fever. Medication of rheumatic heart disease just avoid to some overexertion, surgery may be needed to replace the damage heart valve.

To prevent children of having rheumatic heart disease is by prevention from having rheumatic fever. If there is some indication of having rheumatic fever to children, immediately make some medication seriously to the rheumatic fever. Some children can have this disease from they are born, so to treat this disease may can by some medication to repair by themselves if possible, if not possible it should be wait until a child grown up then do a surgery to treat further.