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ECOS 2 Pre-Midterm > Lymphatics > Flashcards

Flashcards in Lymphatics Deck (75)
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1

What are the 3 anatomical components of the lymphatic system?

1. Lymph fluid
2. Lymphatic vessels
3. Lymphatic tissues/organs

2

Main function of the lymphatic system?

Homeostasis - immune, digestive, waste, etc.

3

When does the lymphatic system begin to develop?

5th week of gestation

4

Why is breast feeding recommended?

The lymphoid tissue is immature at birth

5

4 functions of lymphatic system?

1. Maintain fluid balance
2. Tissue purification - lymph bathes organs, cleanses toxins and bacteria
3. Defense - lymph nodes contains immune cells, Ag processing and presentation
4. Nutrition - Fat absorption via chylomicrons, returns proteins to vasculature

6

When fluid overload occurs, the lymphatic system helps prevent tissue damage by ________

Clearing excess

7

_____ of lymph is necessary for appropriate immune function

Free flow

8

4 tissues that do NOT have lymphatic vessels?

1. Epidermis including hair and nails
2. Endomysium of muscle
3. Cartilage
4. Bone marrow

9

Describe the pathway for lymph

Terminal lymphatics
Collecting vessels
Afferent lymph vessels
Lymph nodes
Efferent lymph vessels
Lymphatic trunks
Thoracic duct or right lymphatic duct
Venous system

10

Collecting vessels consist of chains of muscular units called?

Lymphangions - contract to move lymph in peristaltic waves

11

Lymphangions contain what type of muscle?

Smooth

12

2 types of lymph nodes?

Superficial - in subcutaneous tissue
Deep

13

Function of lymph nodes

Filtration of fluid, maturation of lymphocytes and phagocytosis of bacteria

14

What are the lymphatic trunks?

1. Lumbar
2. Intestinal
3. Bronchomediastinal
4. Subclavian
5. Jugular

15

Efferent lymphatic vessels drain into?

Lymphatic trunks

16

This trunk drains lymph from lower limbs and pelvic organs

Lumbar

17

This trunk drains lymph from abdominal viscera

Intestinal

18

This trunk drains portions of thorax

Bronchomediastinal

19

This trunk drains upper limbs

Subclavian

20

This trunk drains portions of neck and head

Jugular

21

What drains the lymphatic trunks of the lower body?

Cisterna chyli

22

Where is the cisterna chyli?

L1-L2

23

What gives rise to the thoracic duct?

Cisterna chyli at L1-2

24

What drains into the thoracic duct?

Left head, Left neck, Left UE, Left thorax/abdomen
EVERYTHING INFERIOR TO UMBILICUS

25

What does the thoracic duct empty into?

Left subclavian and Left internal jugular veins

26

What drains into the Right lymphatic duct?

Right head, Right neck, Right UE, R thorax
Heart and lungs

27

What does the right lymphatic duct empty into?

Right subclavian and Right internal jugular venous JUNCTION

28

Swollen, soft and painful lymph node may indicate?

Infection

29

Swollen, hard and non-painful lymph node may indicate?

Malignancy

30

Virchow's lymph node may indicate?

Abdominal cancer