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== U-90042 ==
{{DISPLAYTITLE:Structure of the Human Heart}}


'''U-90042''' is a hypothetical concept or identifier used in various contexts, often related to technology or engineering. It is not a widely recognized term in mainstream literature but may appear in specialized fields or fictional works.
==Structure of the Human Heart==
[[File:U-90042_Structure.svg|thumb|right|Diagram of the human heart structure]]
The human heart is a muscular organ responsible for pumping blood through the [[circulatory system]]. It is located in the [[thoracic cavity]], between the lungs, and is roughly the size of a fist. The heart is composed of four chambers: two upper chambers called the [[atrium|atria]] and two lower chambers called the [[ventricle|ventricles]].


== Structure ==
===Chambers of the Heart===
[[File:U-90042_Structure.svg|thumb|right|Diagram of U-90042 structure]]
The heart's four chambers are crucial for its function:
The structure of U-90042, as depicted in various diagrams, typically involves a complex arrangement of components that are designed to achieve a specific function. The exact nature of these components can vary depending on the context in which U-90042 is used. In engineering, it might refer to a particular configuration of mechanical or electronic parts.


== Applications ==
* '''Right Atrium''': Receives deoxygenated blood from the body through the [[superior vena cava]] and [[inferior vena cava]].
U-90042 can be applied in several fields, including:
* '''Right Ventricle''': Pumps deoxygenated blood to the lungs via the [[pulmonary artery]].
* '''Left Atrium''': Receives oxygenated blood from the lungs through the [[pulmonary veins]].
* '''Left Ventricle''': Pumps oxygenated blood to the rest of the body through the [[aorta]].


* '''Engineering''': In engineering, U-90042 might refer to a specific model or prototype used in testing new technologies.
===Valves of the Heart===
* '''Technology''': In technology, it could be a code or identifier for a software version or hardware component.
The heart contains four main [[heart valve|valves]] that ensure unidirectional blood flow:
* '''Fiction''': In fictional works, U-90042 might be used as a designation for a futuristic device or vehicle.


== Related pages ==
* '''Tricuspid Valve''': Located between the right atrium and right ventricle.
* [[Engineering]]
* '''Pulmonary Valve''': Located between the right ventricle and the pulmonary artery.
* [[Technology]]
* '''Mitral Valve''': Located between the left atrium and left ventricle.
* [[Fiction]]
* '''Aortic Valve''': Located between the left ventricle and the aorta.


== References ==
===Heart Wall===
{{Reflist}}
The heart wall consists of three layers:


[[Category:Hypothetical concepts]]
* '''Epicardium''': The outer layer, which is also part of the [[pericardium]].
[[Category:Engineering]]
* '''Myocardium''': The thick, muscular middle layer responsible for the heart's contractile function.
[[Category:Technology]]
* '''Endocardium''': The inner layer that lines the heart chambers and valves.
 
===Conduction System===
The heart's [[electrical conduction system]] controls the heartbeat:
 
* '''Sinoatrial Node (SA Node)''': The natural pacemaker of the heart, located in the right atrium.
* '''Atrioventricular Node (AV Node)''': Relays electrical impulses from the atria to the ventricles.
* '''Bundle of His''': Transmits impulses from the AV node to the ventricles.
* '''Purkinje Fibers''': Distribute the electrical impulse throughout the ventricles.
 
==Function==
The primary function of the heart is to maintain [[blood circulation]] throughout the body. It achieves this by:
 
* Pumping deoxygenated blood to the lungs for oxygenation.
* Pumping oxygenated blood to the tissues and organs.
 
==Related pages==
* [[Cardiovascular system]]
* [[Blood pressure]]
* [[Heart disease]]
* [[Electrocardiography]]
 
[[Category:Cardiology]]
[[Category:Anatomy]]

Latest revision as of 10:52, 15 February 2025


Structure of the Human Heart[edit]

Diagram of the human heart structure

The human heart is a muscular organ responsible for pumping blood through the circulatory system. It is located in the thoracic cavity, between the lungs, and is roughly the size of a fist. The heart is composed of four chambers: two upper chambers called the atria and two lower chambers called the ventricles.

Chambers of the Heart[edit]

The heart's four chambers are crucial for its function:

Valves of the Heart[edit]

The heart contains four main valves that ensure unidirectional blood flow:

  • Tricuspid Valve: Located between the right atrium and right ventricle.
  • Pulmonary Valve: Located between the right ventricle and the pulmonary artery.
  • Mitral Valve: Located between the left atrium and left ventricle.
  • Aortic Valve: Located between the left ventricle and the aorta.

Heart Wall[edit]

The heart wall consists of three layers:

  • Epicardium: The outer layer, which is also part of the pericardium.
  • Myocardium: The thick, muscular middle layer responsible for the heart's contractile function.
  • Endocardium: The inner layer that lines the heart chambers and valves.

Conduction System[edit]

The heart's electrical conduction system controls the heartbeat:

  • Sinoatrial Node (SA Node): The natural pacemaker of the heart, located in the right atrium.
  • Atrioventricular Node (AV Node): Relays electrical impulses from the atria to the ventricles.
  • Bundle of His: Transmits impulses from the AV node to the ventricles.
  • Purkinje Fibers: Distribute the electrical impulse throughout the ventricles.

Function[edit]

The primary function of the heart is to maintain blood circulation throughout the body. It achieves this by:

  • Pumping deoxygenated blood to the lungs for oxygenation.
  • Pumping oxygenated blood to the tissues and organs.

Related pages[edit]

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