What does vitelline vein become?

What does vitelline vein become?

Vitelline veins give rise to a periduodenal plexus that develops into a single vessel, the portal vein. The superior mesenteric vein originates from the right vitelline vein that receives blood from the primitive intestinal loop.

Where do vitelline veins drain to?

The vitelline veins drain the gut tube, the umbilical veins bring oxygenated blood from the placenta, and the cardinal veins drain the head and body wall (Fig. 6.12).

Which are derivatives of the vitelline arteries?

They give rise to the celiac artery, superior mesenteric artery, and inferior mesenteric artery.

What are the three sets of paired veins present in the early embryonic stage of vertebrae?

Three symmetric paired veins form the basis of the early venous system, draining into the heart: vitelline veins, umbilical veins, and cardinal veins.

What is the function of vitelline membrane?

The vitelline membrane (VM) is a multilayered structure that protects and gives shape to the egg yolk and separates it from the egg white. Together with the chalaza, VM keeps the egg yolk in the central part of the egg, thereby preventing its integration with the shell membranes.

Where is the vitelline membrane located?

The vitelline membrane is the transparent casing that encloses the yolk of the hen’s egg and separates it from the albumen. It consists of two major layers, the inner layer, which is laid down in the ovary, and the outer layer, which is secreted in the oviduct.

Which three veins are empty into the portal vein?

The portal vein is usually formed by the confluence of the superior mesenteric, splenic veins, inferior mesenteric, left, right gastric veins and the pancreatic vein….

What drains into inferior vena cava?

The inferior vena cava (IVC) (plural: inferior venae cavae) drains venous blood from the lower trunk, abdomen, pelvis and lower limbs to the right atrium of the heart.

How many vitelline arteries are there?

two vitelline arteries
It connects to the vascular system of the yolk sac and the vitelline arteries arise (Fig. 9a, Fig. 9b) [10]. Finally, two vitelline arteries are developed, which form a vascular ring around the primitive intestine at the level of the junction of the vitelline duct with the intestinal tube (Fig.

What receives the umbilical vitelline and cardinal veins?

The common cardinal veins form at the junction of the anterior and posterior cardinal veins on both sides. Between this junction and the heart the common cardinal veins receive the vitelline and umbilical veins. The vitelline veins initially drain the yolk sac and later the intestines.

What are anterior cardinal veins?

The anterior cardinal veins (precardinal veins) contribute to the formation of the internal jugular veins and together with the common cardinal vein form the superior vena cava. In an anastomosis by anterior cardinal veins, the left brachiocephalic vein is produced.

What is the vitelline membrane composed of?

The vitelline membrane is the extracellular protein membrane covering the yolk. It is composed of glycoproteins (GPM I, II, III) that might correspond to the major proteins of the zona pellucida (ZP1, ZP3, ZPC, ZPD and other ZP) (Takeuchi et al., 1999; Smith et al., 2006).

What is the shell layer and the vitelline layer?

The main shell consists of 5 layers: the vitelline membrane (300 nm thick), the wax layer, the innermost chorionic layer (40-50 nm), the endochorion (500-700 nm), and the exochorion (300-500 nm). The vitelline membrane consists of irregularly organized particles.

What is the difference between vitelline membrane and zona pellucida?

The “zona pellucida” is the stiff, gel-like spherical ‘shell’ that closely surrounds the egg cells of mammals. The equivalent structure is called the vitelline membrane surrounding amphibian eggs, echinoderm eggs, bird eggs, and almost every other kind of egg than mammals.

What three vessels join the main portal vein?

The hepatic portal vein is formed from the superior mesenteric vein, the inferior mesenteric vein, and the splenic vein.

What is the difference between portal vein and hepatic vein?

What is the difference between the hepatic portal vein and the hepatic vein? The hepatic portal vein carries nutrient-rich blood from the intestine and other parts such as the gallbladder, pancreas and spleen to the liver, whereas the hepatic vein carries deoxygenated blood from the liver to the vena cava.

Which veins drain into the superior vena cava?

The azygos vein is another vein that drains into the superior vena cava. This vein is unpaired. It runs along the right aspect of the thoracic vertebral column and enters into the thorax at the aortic hiatus of the diaphragm. The azygos vein forms from the joining of the right subcostal and ascending lumbar veins.

What are vitelline vessels?

n. The artery that carries blood to the yolk sac from the embryo. The vein that carries blood from the yolk sac to the embryo.