Anatomy test flash deck

What are 2 structures of the Lymphatic system?

Lymphatic vessels and organs

What are three functions of the lymphatic system?

Transports leaked fluids from cardiovascular system back to the blood.
Transports dietary lipid.

Plays essential roles in immunity and fighting infections.

What role does interstitial fluid play in the lymphatic system?

It serves as the source of lymph, facilitating fluid balance, nutrient transport, and immune surveillance within the lymphatic system.

What are 3 cell types of the lymphatic system?

Macrophages, dendritic cells, and lymphocytes.

How does interstitial fluid move?

Plasma moves out of the capillary at the beginning, due to high blood pressure in the arteriole.

Most plasma is pulled back into the capillary at the end, due to the pull exerted by osmotic pressure in the venule.

What is lymph?

Plasma that leaked out of the capillaries, entered interstitial fluid, and is now being transported by the lymphatic system.

What happens if the fluids are not picked up?

Edema occurs as fluid accumulates in tissues.

How does Edema occur?

When there is increased fluid delivery to the capillary bed; increased blood pressure; and decreased removal of fluid at the capillary bed.

What is the lymph node’s function?

Filter lymph before returning it to blood.

What are the materials removed during the filtration of lymph node's?

Bacteria, viruses, cancer cells, and cell debris.

What are the three lymph node’s regions?

Cervical, axillary, inguinal

What are 2 types of WBC’s in the lymph node’s?

Macrophages and lymphocytes.

What are Macrophages? And what are their function?

Monocytes that have left the bloodstream and entered the tissue.

“Eat” and destroy bacteria, viruses, and other foreign.

What is the function of lymphocytes?

Respond to foreign substances in lymph in a variety of ways.

What are 2 compartments of the lymph node?

Cortex and medulla.

What do lymph nodes create?

Congestion to allow time for detection and filtration

What makes up the lymphoid organs?

Spleen, thymus, tonsils, peyer’s patches, and appendix

What is the function of the Spleen?

Filters blood of bacteria, viruses, and debris; contains lymphocytes for immune surveillance; destroys worn-out RBC’s and recycles its contents.

What is the Thymus function?

Functions highest during childhood and helps make T-Lymphocytes.

What are the functions of Tonsils?

Trap and remove foreign pathogens.

What is tonsillitis?

Inflammation from tonsil congestion.

What are Peyer’s patches? And what do they do?

Found in the wall of the ileum of the small intestine; they filter and clean digesta of bacteria, viruses, and debris.

What does the appendix do? What happens without an appendix?

Filters digesta like the Peyer’s patches, without them, you risk autoimmune disease.

What is appendicitis?

Inflammation from congestion, can be life-threatening if it bursts.

What is immunity?

Specific resistance to disease.

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