Lymphatic Flashcards Preview

Anatomy and Physiology > Lymphatic > Flashcards

Flashcards in Lymphatic Deck (34):
0

Describe a lymphatic capillary

-one layer thick
-closed-ended tubes
-porous
-lacteal
-they just kind of "start"

1

What are the functions of the lymphatic system?

-return excess interstitial (tissue) fluid to blood
-returns plasma proteins to blood
-body defense
-transports fat-soluble vitamins/fatty acids from intestines (to blood) to liver

2

Describe a lymphatic vessel

-similar to veins
-thin-walled
-valves

3

What do lymph trunks do?

Transport fluid from vessels to trunks

4

What do Collecting Ducts do?

-empty into venous circulation (return fluid back)

5

What is the order of fluid flow in the lymphatic system?

1) Lymphatic Capillary
2) Afferent lymphatic vessel
3) Lymph node
4) Efferent lymphatic vessel
5) lymphatic trunk
6) collecting duct
7) subclavian vein

6

How does the Right Lymphatic Collecting Duct work?

-Drains right head, neck, arm, thorax
-Empties into the right subclavian vein

7

What are two Collecting Ducts?

-Right Lymphatic
-Thoracic Duct

9

What part of the body empties into the thoracic duct?

-Drains rest of body

10

What is a Lymph?

-Tissue fluid enclosed within lymphatic vessel

11

What is the color of lymph?

Normally clear watery fluid but may appear "milky" (chyle) (fat digestion)

12

What makes up lymph?

-Contains water, proteins, immune substances, nutrients, etc

13

What must exist for lymph to flow

A pressure gradient

14

What creates pressure gradients?

1. Skeletal muscle contraction 2. breathing movements 3. contractility of vessels

15

What is edema/lymphedema

Build up of fluid

16

What are the lymphatic organs? (4)

1. Lymph nodes 2. Thymus 3. Spleen 4. Bone marrow

17

Are lymph nodes found in groups?

Yes

18

Name the superficial lymph groups. (3)

1. Cervical 2. Axillary 3. Inguinal

19

Name the deep lymph groups. (3)

1. Pelvic 2. Abdominal 3. Thoracic

20

Are lymph nodes lacking in CNS?

Yes

21

Name two specialized lymph nodes.

1. Peyer's patches 2. Tonsils

22

Where is the thymus located?

In the mediastinum

23

Which lymph organ atrophies with age?

Thymus

24

Where does T cell development occur?

Thymus

25

What does the thymus secrete?

Thymosins

26

Where is the spleen located?

Upper left abdomen

27

Which organ contains blood sinuses?

Spleen

28

What do the lobules in the spleen consist of?

Pulp (red and white)

29

Lymphocytes are primarily where?

White pulp

30

What is the function of the spleen? (3)

1. Blood reservoir 2. Filters blood 3. Body Defense

31

What vitamins are fat soluble?

A, D, E, K

32

What does the thoracic collecting duct originate at?

-Originates as "cisterna chyli"

33

What does the thoracic collecting duct receive from the liver?

-Receives chyle from intestines

34

What vein does the thoracic collecting duct empty into?

Left subclavian vein (is returned by the left subclavian vein)