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Flashcards in Lymph Anatomy Deck (23)
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1

Initial lymph vessels...

- 2 layers - no smooth muscle

- gaps between cells

- anchoring filaments

- discontinuous basement membrane

- elastin sock

2

Pre collectors...

- 2 layers

- angions - partial biscupid valves

- smooth muscle (distal)

- elastin sock

3

Collector vessels KNOW

- angions - smooth muscles
- bicuspid valves

- 3 layers like BV

- elastin sock

- control mechanisms
- intrinsic
- extrinsic

4

Lymph nodes ...

- capsule is highly innervated

- connective tissue capsule

5

What direction is AFFERENT?

Exit

6

Functions of lymph nodes

- concentration of lymph

- production of lymphocytes (antibodies) - site for immune reactions

- biological filter

- storage- macrophages, lymphocytes, and inorganic substances that cannot be broken down

7

Watersheds

- clavicular

- spine of scapular

- mid sagittal

- spine

- navel - lumbar line

8

Watersheds

- navel - lumbar line

- mid sagittal line

- medial third of the buttocks

- posterior thigh

9

Bundles

Alternate route - radial catchment area bypassed axilla goes to inferior and superior clavicular lymph nodes

10

Territories

Area - zone - territory - anastomoses

11

What are the functions of the lymph system?

- maintain fluid balance, blood volume and protein circulation

- collection of cerebral spinal fluid from the spinal column

- removes wastes and pathogens

- transports immune cells, antigens to lymph nodes and long chain fatty acids

12

What intrinsic factors moves lymph through the body?

Intrinsic mechanisms
- ANS
- stretch receptor reflex
- automyogenic

13

What extrinsic mechanisms move lymph through the body,

Extrinsic

- breathing

- pulsation of arteries

- skeletal muscle contractions

- intestinal peristalsis

14

What factors increase lymph flow?

- exercise

- body temperature

- increased BV filtrate

- increased interstitial pressure

15

What decreases lymph flow,

- inactivity
- decreased body temp
- paralysis of skeletal muscles
- local inflammation
- damage via trauma, surgery
- heavy pressure massage
- tight clothing

16

Define transport capacity

Max system capacity. Can be reduced by damage

17

Define lymph volume per unit time

Volume of lymph transported in a unit of time.
Cannot exceed transport capacity

18

Define lymphatic load

All things carried by the LVS

Can exceed transport capacity

19

Define functional reserve

Transport capacity minus the lymphatic load

20

What are the safety factors for normal lymph

- negative interstitial pressure

- function reserve - ability to increase transport capacity.

- increased macrophagy activity - due to increased protein

21

What are the major components of lymph obligatory load

Water

Proteins

Fats

Cells

22

What are the minor components of lymph obligatory load

Dyes

Dust

Bacteria

23

What is glycocalyx,

Preserves endothelial function

Role in vascular wall permeability and selectivity

Interactions with blood stream and assumes a filter function

Glycoprotein, proteoglycans form a fragile gel- like mesh on the liminal side of the blood capillary

Can be easily destroyed by trauma, surgery, ischemia, inflammation sepsis