What are the sinuses of the heart?

Publish date: 2022-12-07
The coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the heart muscle (myocardium). It delivers less-oxygenated blood to the right atrium, as do the superior and inferior venae cavae. It is present in all mammals, including humans.

Keeping this in consideration, what are pericardium sinuses?

Pericardial sinus. Also, the sinus that forms in the pericardial cavity where the dorso-mesentary pericardium reside. Note: This sinus is clinically important because passing one end of clamp through the sinus, and the other end anterior to the aorta/pulmonary trunk will allow complete blockage of blood output.

Secondly, what are the surfaces of the heart? External features of heart (fig. The heart is usually said to have an apex, a base, and three surfaces: sternocostal, pulmonary (or left), and diaphragmatic. Borders are indefinite. The base, formed by the atria, is directed posterior, and it lies behind the ventricles.

Consequently, what is an aortic sinus?

An aortic sinus is one of the anatomic dilations of the ascending aorta, which occurs just above the aortic valve. These widenings are between the wall of the aorta and each of the three cusps of the aortic valve. The anterior aortic sinus gives rise to the right coronary artery.

Where is the coronary sinus in the heart?

The coronary sinus is a collection of smaller veins that merge together to form the sinus (or large vessel), which is located along the heart's posterior (rear) surface between the left ventricle and left atrium.

What does sinus venosus become?

The sinus venosus also forms the SA node and the coronary sinus; in (most) mammals only. The left portion shrinks in size and eventually forms the coronary sinus (right atrium) and oblique vein of the left atrium, whereas the right part becomes incorporated into the right atrium to form the sinus venarum.

Where is the base of the heart?

The base of the heart is located at the level of the third costal cartilage, as seen in Figure 1. The inferior tip of the heart, the apex, lies just to the left of the sternum between the junction of the fourth and fifth ribs near their articulation with the costal cartilages.

What is oblique sinus of heart?

The oblique sinus of the pericardial cavity is a blind ending passage posterior to the heart formed by the reflections of the visceral and parietal pericardium onto the vessels traversing the space.

What is the covering of the heart called?

Structure. The pericardium is a tough double layered fibroelastic sac which covers the heart. The space between the two layers of serous pericardium (see below), the pericardial cavity, is filled with serous fluid which protects the heart from any kind of external jerk or shock.

What is oblique sinus?

The oblique sinus is a cul-de-sac along the posterior left atrial (LA) wall and is bounded by the pericardial reflections of the left and right pulmonary veins and superiorly by the transverse sinus/LA roof.

How does cardiac tamponade occur?

Cardiac tamponade is usually the result of penetration of the pericardium, which is the thin, double-walled sac that surrounds your heart. The cavity around your heart can fill with enough blood or other bodily fluids to compress your heart. As the fluid presses on your heart, less and less blood can enter.

What is Sternocostal surface?

The sternocostal surface of the heart is directed anteriorly, superiorly and slightly to the left. It is formed by the left, right, superior and inferior borders of the heart. It consists of the anterior surfaces of the: right atrium: to the right and superior to the anterior atrioventricular groove.

What is acute sinusitis?

Acute sinusitis, also called acute rhinosinusitis, is a short-term inflammation of the membranes that line your nose and surrounding sinuses. This impedes your ability to drain mucus from your nose and sinuses. Acute sinusitis is most commonly due to a cold causing viral infection.

What are the sinuses of Valsalva?

Definition. A sinus of Valsalva aneurysm (SOVA) is an enlargement of the aortic root area between the aortic valve annulus and the sinotubular ridge. 1 In a normal heart, the left and right sinus each contain their respective coronary artery ostia, whereas the posterior sinus is a noncoronary sinus.

What does sinus of Valsalva mean?

Medical Definition of sinus of Valsalva : any one of the pouches of the aorta and pulmonary artery which are located behind the flaps of the semilunar valves and into which the blood in its regurgitation toward the heart enters and thereby closes the valves. — called also aortic sinus.

Can I exercise with an enlarged aorta?

If you have a larger aneurysm and are getting closer to repair, it's still ok to stay active. These activities are usually safe to do, he says, even with a growing aneurysm: Moderate exercise, like walking, cycling or swimming. Lifting light or medium weights.

What foods to avoid if you have aortic aneurysm?

Reduce the amount of sodium and cholesterol in your diet. And eat lean meats, lots of fruits and vegetables, and whole grains. Avoid strenuous activities. Things like shoveling snow, chopping wood, and lifting heavy weights can actually put strain on an existing aneurysm.

What are the symptoms of a dilated aorta?

Signs and symptoms that your thoracic aortic aneurysm has burst include:

What is the crux of the heart?

The crux cordis or crux of the heart (from Latin "crux" meaning "cross") is the area on the lower back side of the heart where the coronary sulcus (the groove separating the atria from the ventricles) and the posterior interventricular sulcus (the groove separating the left from the right ventricle) meet.

What is the aortic root?

The aortic root is the section of the aorta closest to and attached to the heart. The aortic root consists of the aortic valve and the openings for the coronary arteries (the coronary ostia). The aortic valve has three flaps (or cusps) surrounded by a fibrous ring (the annulus).

What is a sinus of Valsalva aneurysm?

Sinus of Valsalva aneurysm (SOVA) is an abnormal dilatation of the aortic root located between the aortic valve annulus and the sinotubular junction. This occurs as a consequence of the weakness of the elastic lamina at the junction of the aortic media and the annulus fibrosis.

How dangerous is an enlarged aorta?

Abnormal enlargement or bulging of the aorta, the largest blood vessel of the body, is not an unusual condition. Health-care professionals refer to this as aneurysm of the great vessel, or aortic aneurysm. Aneurysms are dangerous because they can rupture, causing internal bleeding.

ncG1vNJzZmiemaOxorrYmqWsr5Wne6S7zGiuoZmkYq6zsYytn55lo567tr%2FErGSonl2ptaZ5x56Yq6w%3D