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Anatomy of Veins during Pregnancy

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Questions and Answers

Which layer of the vein is actively thrombogenic?

Intima (correct)

Tunica externa

Media

Adventitia

What is the primary factor that causes blood flow in the veins against gravity in the upright position?

Thoracic pressure

Abdominal pressure

Venous pumping (correct)

Arterial inflow

What is the main function of the venous system in terms of blood pressure regulation?

To increase blood pressure

To constrict blood vessels

To act as a reservoir to hold extra blood (correct)

To directly regulate heart rate

What is the result of competent valves in the venous system?

Flow of blood towards the heart Signup and view all the answers

Which of the following factors does not directly contribute to blood flow in the veins?

Heart rate Signup and view all the answers

What is the effect of high intra-abdominal pressure on venous return from the lower limbs?

It decreases venous return Signup and view all the answers

What is the anatomical location of the femoral vein relative to the superficial femoral artery?

Caudally, positioned lateral to superficial femoral artery, before assuming a position medial to the femoral artery at the level of the inguinal ligament Signup and view all the answers

Which of the following veins is a tributary of the deep femoral vein?

Lateral circumflex femoral vein Signup and view all the answers

How is the common iliac vein formed?

By the union of the femoral, deep femoral, and great saphenous veins Signup and view all the answers

What is the structure of the inferior vena cava?

A valveless vessel that originates at the confluence of the common iliac vein Signup and view all the answers

What is the primary pathway of venous drainage from the lower limb?

From the deep veins to the femoral vein, then to the common iliac vein, and finally to the inferior vena cava Signup and view all the answers

Which of the following veins is responsible for draining the deep muscles of the lateral thigh?

Deep femoral vein Signup and view all the answers

What is the typical number of valves in the femoral vein?

3-4 Signup and view all the answers

What is the origin of the external iliac vein?

Continuation of the femoral vein posterior to the inguinal ligament Signup and view all the answers

What is the typical pathway of blood flow from the calf muscle pump?

From the superficial veins to the deep veins, then to the popliteal vein, and finally to the femoral vein Signup and view all the answers

Which of the following is a tributary of the common iliac vein?

All of the above Signup and view all the answers