Lymphatic Vascular System Lecture 2

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What is the primary function of the lymphatic vascular system?

To regulate body temperature

To transport oxygen to the body's tissues

To collect excess interstitial fluid from the tissue spaces and return it to the blood (correct)

To filter out waste products from the blood

What is the characteristic of lymphatic capillaries?

They are impermeable to solvents and large solutes

They have a multilayer of endothelial cells

They are more permeable to solvents and large solutes and whole cells (correct)

They are less permeable to solvents and large solutes

What is the primary source of lymph in the body?

The kidneys and liver

The brain and skeletal muscles

The heart and lungs

The liver and small intestine alone (correct)

What is the characteristic of lymphatic vessels?

They have three layers and are thinner than blood vessels Signup and view all the answers

What is the function of the one-way valves in lymphatic vessels?

To prevent the backflow of lymph Signup and view all the answers

What is the composition of lymph?

It has a low protein content and varies depending on the organs it drains Signup and view all the answers

What is the primary function of the lymphatic system in regards to fluid balance?

To return fluid from tissues to blood Signup and view all the answers

What percentage of fluids that leak out of blood capillaries returns to the blood via lymph capillaries?

15% Signup and view all the answers

What would be the consequence if the lymphatic system becomes blocked?

Edema Signup and view all the answers

What is the name of the lymphatic duct that drains the upper right quadrant of the body?

Right Lymphatic Duct Signup and view all the answers

What percentage of blood proteins leak out of capillaries each day?

25-50% Signup and view all the answers

What is the name of the duct that drains the rest of the body, including the left arm and left side of the head, neck, and thorax?

Thoracic Duct Signup and view all the answers

What is the function of lacteals in the small intestine?

To absorb lipids and fat-soluble vitamins Signup and view all the answers

Where are some white blood cells, such as lymphocytes and monocytes, produced?

In the lymphatic tissues Signup and view all the answers

What is the primary function of the lymphatic system in terms of body defense?

To screen body fluids and remove pathogens and damaged cells Signup and view all the answers

What is the function of the thymus in the immune system?

To mature T cells Signup and view all the answers

What is the route of lymph circulation in the body?

Interstitial fluid → Lymph → Blood Signup and view all the answers

What is the function of lymph nodes, tonsils, and the spleen in the immune system?

To populate with immunocompetent cells Signup and view all the answers

Where is the thymus located in the body?

In the upper front part of the chest, behind the sternum, and in front of the heart Signup and view all the answers

What is the function of the spleen in regards to red blood cells?

Destruction of old or damaged red blood cells Signup and view all the answers

What is the composition of the thymus?

Mixture of developing T-cells enmeshed in a network of Thymic Epithelial Cells Signup and view all the answers

What is the role of the spleen in regards to blood?

It stores blood and can constrict to release it if needed Signup and view all the answers

What is the outer layer of the thymus called?

Capsule Signup and view all the answers

What happens to T-cells as they progress through developmental stages in the thymus?

They migrate from the cortex to the medulla Signup and view all the answers