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Circulatory System Overview

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Questions and Answers

What is a common consequence of the complicated development of the vena cava?

The absence of the superior vena cava

Deviations from the normal pattern are common (correct)

Deviations from the normal pattern are rare

The formation of a single inferior vena cava

What occurs when the left sacrocardinal vein fails to lose its connection with the left subcardinal vein?

An absence of the inferior vena cava

A double inferior vena cava (correct)

An abnormal connection to the azygos vein

A single inferior vena cava

What is the fate of the left gonadal vein in a double inferior vena cava?

It disappears

It becomes the left common iliac vein

It connects to the azygos vein

It remains as in normal conditions (correct)

What happens when the right subcardinal vein fails to make its connection with the liver?

The bloodstream from the caudal part of the body reaches the heart through the azygos vein Signup and view all the answers

What is the usual association with absence of the inferior vena cava?

Other heart malformations Signup and view all the answers

What is the anastomosis between the anterior cardinal veins developed into?

The left brachiocephalic vein Signup and view all the answers

What is the function of the left brachiocephalic vein?

To channel blood from the left side to the right side Signup and view all the answers

What is the fate of the terminal portion of the left posterior cardinal vein?

It forms the left superior intercostal vein Signup and view all the answers

What receives blood from the second and third intercostal spaces?

The left superior intercostal vein Signup and view all the answers

What is characteristic of the formation of the vena cava system?

The development of an anastomosis between left and right Signup and view all the answers