Lymphatic Vessels and Lymph Circulation Flashcards Preview

The Lymphatic System (Sandy) > Lymphatic Vessels and Lymph Circulation > Flashcards

Flashcards in Lymphatic Vessels and Lymph Circulation Deck (25)
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1

slightly larger in diameter than blood capillaries

lymphatic capillaries

2

slightly larger in diameter than blood capillaries, the endothelial cells overlap and form one-way flaplike mini-valves that allow fluid into capillaries but not out

lymphatic capillaries

3

in what direction do lymphatic capillaries allow fluid?

into the capillaries but not out

4

collagen fibers that attach the lymphatic capillaries to surrounding tissues. When there is excess interstitial fluid, the filaments are pulled taut and open up the spaces between lymphatic capillary endothelial cells (valves) even more.

anchoring filaments

5

what are anchoring filaments made of?

collagen fibers

6

what attaches lymphatic capillaries to surrounding tissues

anchoring filaments

7

What happens to the anchoring filaments when there is interstitial fluid?

the filaments are pulled taut and open up the spaces between lymphatic capillary endothelial cells (valves) even more

8

Special lymphatic capillaries found in the small intestine that pick up lipids and lipid soluble vitamins. The lymph has a milky appearance due to the presence of lipids and is referred to as chyle.

lacteals

9

Where are lacteals found?

small intestine

10

What do lacteals pick up?

lipids and lipid soluble vitamines

11

What is the appearance and why and what is it called in the lymph of lacteals?

the lymph has milky appearance due to the presence of lipids and is referred to as chyle

12

similar to veins except they are even thinner walled and have more valves, they merge to form larger vessels (lymphatic trunks)

collecting lymphatic vessels

13

What do collecting lymphatic vessels merge to form?

larger vessels (lymphatic trunks)

14

What are the 5 main lymphatic trunks?

lumbar
intestinal
bronchomediastinal
subclavian
jugular

15

What lymphatic trunk drains the thorax?

bronchomediastinal

16

From the lymphatic trunk where does the lymph flow?

into one of two ducts (thoracic or right lymphatic duct)

17

This starts at the cisterns chyli, drains both the left and right sides of the body inferior to the ribs and the left head, neck, thorax, and the arm. Lymph from here drains into the left subclavian vein.

thoracic (aka left lymphatic) duct

18

Where does the thoracic (left lymphatic) duct start?

cisterna chyli

19

What 6 areas does the thoracic (left lymphatic) duct drain?

left and right sides of body inferior to the ribs
left head
neck
thorax
arm

20

Into what vein does the lymph from the thoracic (aka left lymphatic) duct drain?

left subclavian vein

21

This is a pouch at the beginning of the thoracic duct that drains the left and right lumbar trunks, and the intestinal trunk.

cisterna chyli

22

What 3 areas does the cisterna chyli drain?

left and right lumbar trunks
intestinal trunk

23

This drains the right thorax, right arm, right side of neck, right side of head, and part of the liver. Lymph returns to the cardiovascular system via the right subclavian vein.

right lymphatic duct

24

What 5 areas does the right lymphatic duct drain?

right thorax
right arm
right side of neck
right side of head
part of liver

25

Where does the lymph of the right lymphatic duct return too?

the cardiovascular system via the right subclavian vein