Lymphatic pt 1

Components of the cardiovascular system

Heart, blood, arteries, veins, and capillaries

What type of flow does the cardiovascular system have?

Two-way flow

What does two-way flow mean?

Blood moves away from and back to the heart

Which vessels carry blood away from the heart?

Arteries

Which vessels carry blood toward the heart?

Veins

Why is the cardiovascular system called a closed loop?

Blood continuously circulates in a loop

Main function of cardiovascular system?

Deliver oxygen, nutrients, remove waste

What is the lymphatic system?

A drainage system that returns fluid to bloodstream

What type of flow does lymphatic system have?

One-way flow

Direction of lymph flow?

Toward the heart only

Why is lymphatic flow one-way?

It only returns fluid, not circulate it

What is lymph?

Fluid collected from tissues

What are lymphocytes?

White blood cells for immunity

How do lymphocytes travel?

Through blood, lymph, and interstitial fluid

Function of lymphocytes?

recognize and help destroy specific pathogens and create immune memory.

What is interstitial fluid?

Fluid between cells

When does interstitial fluid become lymph?

When it enters lymph vessels

How much lymph is formed daily?

About 2 liters

Why is lymph formed?

Imperfect fluid return from capillaries

What is Starling’s Law?

Describes fluid movement in capillaries

Which side of capillary pushes fluid out?

Arterial end

Which side pulls fluid back in?

Venule end

Why doesn’t all fluid return to capillaries?

Imperfect reabsorption

What happens if lymph isn’t drained?

Edema (swelling)

Which organ does NOT produce lymph?

Brain

Why does brain not produce lymph?

Perfect fluid balance

Why does cartilage not produce lymph?

It has no blood vessels

What does avascular mean?

No blood supply