Lymphatic comes from the Latin word lymphaticus, meaning "connected to water," as lymph is clear. Network of vessels & lymph nodes which are located in all major tissues of body

1. Lymphatic
System
Presented By:
Shivangi Sharma
M.Sc Nursing 1st year

3. Introduction
• Lymphatic comes from the Latin word
lymphaticus, meaning "connected to
water," as lymph is clear.
• Network of vessels & lymph nodes which
are located in all major tissues of body.
• Lymphatic system is absent in CNS,
Cornea, Superficial layer of skin, Bones,
Alveoli of lung

4. CONSIST OF
• Lymph
• Lymphatic Channels
- Capillaries
- Vessels
-Ducts
• Lymph Nodes
• Lymph Organs

5. LYMPH
• Transparent & slightly yellowish
liquid
• Alkaline in nature
• Derived from tissue fluid
• When blood passes through tissues
9/10 of fluid - venous end
1/10 of fluid - lymph capillaries

6. COMPOSITION OF LYMPH

7. RATE OF LYMPH FLOW
• Total estimated lymph flow is 120 ml /
hr
• About 100 ml flows through Thoracic
duct in resting man per hour
• Approx 20 ml flow into circulation
through other channels
• 3 – 4 liters / day

8. FUNCTIONS OF
LYMPHATIC SYSTEM
• Lymph carries protein and large
particulate matter away from the tissue
space.
• End products of digestion are absorbed
mainly by lymph channels.

9. Cont..
• Important role in redistribution of fluid
in the body.
• Bacteria, toxins and other foreign
bodies are removed from the tissues.
• Maintenance of structural and
functional integrity of tissue.
• In immune response of the body.
• Production and maturation of
lymphocytes.

10. LYMPHATIC CAPILLARIES
• Smallest lymphatic
vessels
• They begin in the
tissue spaces as blind-
ended sacs
• These capillaries form
plexuses which collect
lymph from the
interstitial space mark
the beginning of
lymphatic system

11. Cont…
• They are lined by a
single layer of
endothelial cells.
• The edge of one
endothelial cell
overlaps the adjacent
cell.
• Overlapping edge is
free to flap inward
minute valve and
permits passage of
high molecular weight
substance.

12. LYMPHATIC VESSELS

13. Cont..
• thin-walled vessels structured like blood
vessels, that carry lymph.
• lymph vessels are complementary to the
cardiovascular system.

14. Lymph vessels-lymph
nodes
Afferent lymph
vessels
Efferent lymph
vessels

16. Cont..
• An efferent lymph vessel may directly
drain into one of the (right or thoracic)
lymph ducts, or may empty into another
lymph node as its afferent lymph
vessel.[4] Both the lymph ducts return the
lymph to the blood stream by emptying
into the subclavian veins

17. Lymph duct
• A lymph duct is a great lymphatic vessel
that empties lymph into one of the
subclavian veins. There are two lymph
ducts in the body—the right lymphatic
duct and the thoracic duct.

18. Cont…
• right lymphatic duct
drains lymph from
• right upper limb,
right side of thorax
and right halves of
head and neck
• thoracic duct
drains lymph into
• circulatory system
at the left
brachiocephalic
vein between the
left subclavian and
left internal jugular
veins.

21. Lymphatic organs
• Primary or Central
lymphocytes are
produced and
undergo
development and
are supplied to
secondary organs.
• Thymus
• Bone marrow
• Secondary or
peripheral organs
lymphocytes are
activated to
participate in
specific immune
response.
• Lymph nodes
• Spleen
• Tonsils

22. Lymphatic nodes

23. FUNCTIONS
DEFENSE
• As lymph passes through lymph Node
reticuloendothelial cells
• remove microorganisms & other injurious
particles
HEMATOPOIESIS
• Site for final stage of maturation of
lymphocytes & monocytes that
• have migrated from bone marrow

24. Summary