The Lymphatic System Quiz

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Questions and Answers

Where do lymphatic ducts connect to return lymph to the bloodstream?

Subclavian vein (correct)

Carotid artery

Aorta

Pulmonary artery

Which vessels collect and filter lymph at the nodes?

Arteries

Veins

Capillaries

Lymphatic vessels (correct)

What do lymphatic vessels do with the lymph they collect?

Transport it to the liver

Transport it away from tissues (correct)

Transport it to the heart

Transport it to the lungs

What do lymphatic vessels have in common with veins?

They have valves Signup and view all the answers

What is the function of lymphatic capillaries?

To collect and filter fluid from cells and tissues Signup and view all the answers

What is the purpose of returning lymph to the bloodstream?

To maintain normal blood volume and pressure Signup and view all the answers

What is the role of the basement membrane in lymphatic capillaries?

To support the endothelial cells Signup and view all the answers

Which of the following is NOT a component of lymphatic capillaries?

Anchoring filaments Signup and view all the answers

What is the main function of lymphatic capillaries?

To maintain blood pressure and volume Signup and view all the answers

What is the purpose of mini-valves in lymphatic capillaries?

To let lymph flow into the capillaries Signup and view all the answers

Which part of the lymphatic system is responsible for transport and cleaning?

Both the lymphatic system and the lymphoid organs and tissues Signup and view all the answers

What do lymphatic capillaries do?

They pick up interstitial fluid and become lymph Signup and view all the answers

What do lymphatic capillaries have in the small intestine?

One layer of endothelial cells with mini valves Signup and view all the answers

What do collecting vessels become as they combine?

Trunks Signup and view all the answers

What are the two types of ducts in the lymphatic system?

The right lymphatic duct and the thoracic duct Signup and view all the answers

What do lymphatic vessels have that allow fluid in?

Capillaries with valves Signup and view all the answers

What is the largest duct in the lymphatic system?

The thoracic duct Signup and view all the answers

What do lymphatic vessels depend on for movement?

Smooth muscle contractions from nearby arteries Signup and view all the answers

Which of the following aids in the movement of lymph in the lymphatic system?

All of the above Signup and view all the answers

What is the lymphatic system responsible for moving back into the circulatory system?

Lymph Signup and view all the answers

Study Notes

Lymphatic System Overview

The lymphatic system is responsible for moving proteins, lipids, and waste products back into the circulatory system.

Lymphatic Ducts

Lymphatic ducts connect to return lymph to the bloodstream through the subclavian veins.
There are two types of ducts in the lymphatic system: the thoracic duct and the right lymphatic duct.
The thoracic duct is the largest duct in the lymphatic system.

Lymphatic Capillaries

Lymphatic capillaries collect interstitial fluid and proteins that have leaked out of blood capillaries.
The basement membrane in lymphatic capillaries is discontinuous, allowing for the passage of substances.
Lymphatic capillaries have mini-valves that prevent backflow of lymph.
Lymphatic capillaries in the small intestine are called lacteals and absorb fats and fat-soluble vitamins.
Lymphatic capillaries do not have smooth muscle, so they depend on the movement of surrounding tissues for lymph flow.

Lymphatic Vessels

Lymphatic vessels have one-way valves that allow fluid in but prevent backflow.
Lymphatic vessels collect and filter lymph at lymph nodes.
Lymphatic vessels return lymph to the bloodstream through lymphatic ducts.
Lymphatic vessels have in common with veins that they both have one-way valves and thin walls.