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Functions of Aorta

The aorta is not a simple tube or conduit but a very complicated portion of the vascular tree, originating from the very left ventricular (LV) outflow tract and aortic valve and advancing to its leading thoracic and abdominal trunk. Carrying blood flow from the heart to the limbs and primary organs is a functional component of the aorta; of equal significance is its capability to distend and recoil as a reaction to pulsatile flow, thus reducing afterload for the LV and also helping diastolic perfusion of the coronary arteries.

Structures and functions of Aorta:

Functions of Aorta

Ascending aorta carrying blood to the heart:

The ascending aorta boosts up from the heart and is around 2 inches longer. The coronary arteries branch off the ascending aorta to carry the blood flow to the heart.

Aortic arch path between ascending and descending aorta:

The aortic arch is the part of the major artery that bends between the ascending and also descending aorta. It then left the heart and ascends, afterward descends back in order to create the arch. The aorta supplies blood flow from the very left ventricle of the heart to the whole of the body parts. Specific problems of the aorta may eventually cause blocked blood vessels. These blockages limit blood circulation to the whole of the body, which can finally lead to swelling and an aneurysm. The factors related to the aortic arch are:

  • Atherosclerosis, or the stitching of the heart.
  • Aortic arch syndrome, a group of symptoms that are related to structural defects with the arteries that branch off from the aorta.
  • Aortic birth disorders.
  • Coartacation of the aorta, means narrowing of arteries.
  • Takayasu’s arteritis, which can result in stroke, heart attack, or other possible conditions.

It is hard for medical experts to analyse the problems with the aortic arch just before the stitching of the arteries. Magnetic resonance imaging is certainly one type of test utilized by doctors to find out the existence of aortic complications. This includes the usage of magnetic fields to make photos of the heart. Echocardiography includes the making use of sound waves to obtain clear images of the heart. Treatments for complications of the aortic arch contain: beta blockers, smoking cessation, ACE inhibitors, diet changes, and also Dacron graft surgery.

Descending thoracic aorta provide blood to the chest:

The descending thoracic aorta moves down via the chest. Its tiny branches provide blood to the ribs and several parts of chest structures.

Abdominal aorta supply blood to the lower parts of the body:

The abdominal aorta starts at the diaphragm, splitting to turn into the paired iliac arteries in the lower abdomen. Almost all of the primary organs get blood from branches of the abdominal aorta.

  • The intima, the interior layer, helps in smoothing a surface for blood to flow across.
  • The media, the mid layer assembled with muscular muscles and elastic fibers, tends to the aorta to contract that result in which we called as heartbeat.
  • The adventitia, the outermost layer, gives an additional support and structure to the aorta.

Aorta Tests:

Aortogram:

A catheter is put into an artery in the groin and move slowly towards the aorta. Starts the flow of contrast material allows X-rays to make a clear picture of the aorta on a fluorescent screen.

Abdominal ultrasound:

A probe a jelly coloured substance stick to the abdomen, produces sound waves to click an image. Abdominal aortic aneurysms can be identified and measured to possible risk of rupture.

Computed tomography (CT scan):

A CT scanner takes help of X-rays and a computer to produces a bulk of images of the aorta and also the surrounding structures.

Magnetic resonance imaging (MRI scan):

An MRI scanner uses the phenomena of radio waves inside a magnetic field to take several pictures of the aorta.

Summary:

  • Ascending aorta carrying blood to the heart.
  • Aortic arch path between ascending and descending aorta.
  • Descending thoracic aorta provide blood to the chest.
  • Abdominal aorta supply blood to the lower parts of the body.

 

 

 

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