Download MBBS Surgery Presentations 37 Lymphatic System Lecture Notes

Download MBBS (Bachelor of Medicine, Bachelor of Surgery) 1st Year, 2nd Year, 3rd Year and Final year Surgery 37 Lymphatic System PPT-Powerpoint Presentations and lecture notes


Lymphatic system

DEPT OF SURGERY

Lymph

What is lymph ?


Tissue fluid (interstitial fluid) that enters the

lymphatic vessels


Formation and transport of tissue fluid

Lymphatic system

Essentially a drainage

system accessory to

venous system

larger particles that escape into

tissue fluid can only be removed

via lymphatic system
Functions

?Network that filters antigens from the interstitial fluid

?Primary site of immune response from tissue antigens

?Lymphatic drainage in al organs of the body except brain, eyes, marrow

and cartilage

?Flaccid thin wal ed channels progressive caliber

?600 lymph nodes in body

?Slow flow, low pressure system returns interstitial fluid to the blood system

Components of lymphatics

? Lymph

? Lymphatic Vessels

? Lymphatic Organs

? Lymphatic cells


Secondary lymphoid tissue

Lymphatic Capil aries

24-

8Features of structure:

Blind end
Single layer of overlapping endothelial

cells

More permeable than that of blood

capillary

Absent from avascular structures, brain,

spinal cord splenic pulp and bone

marrow


Lymphatic Vessels

24-

9

?Three layered wall but thinner

than vein

?More numerous valves than

in vein

?Interposed by lymph nodes at

intervals

?Arranged in superficial and

deep sets

Lymph Trunks

? Right and left jugular trunks

? Right and left subclavian trunks

? Right and left bronchomediastinal trunks

? Right and left lumbar trunks

? Intestinal trunk


Lymphatic Ducts

Right lymphatic duct

Thoracic duct

Lymphatic Cel s

24-

12 Also called lymphoid cells

Located in both the lymphatic system and the cardiovascular

system.

Work together to elicit an immune response.
Types of lymphatic cells are:

? Macrophages
? Epithelial cells
? Dendritic cells
? Lymphocytes


Lymphatic Organs

Primary organs

?Red bone marrow
?Thymus gland


Secondary organs

?Lymph nodes
?Lymph nodules
?Spleen

Lymph nodes

Capsular shel
Fibroblasts and reticulin

fibers

Macrophages
Dendritic cel s
T cel s
B cel s




Head & Neck Nodes

Axil ary Nodes




Inguinal Lymph nodes


Lymphangitis

Inflammation of the lymph vessels

Commonest cause bacteria called streptococcus

pyogenes(most common).

Lymph vessels appear as red streaks through the

skin




Filariasis

Lymphedema

Occurs due to accumulation of

lymphatic fluid in the interstitial

tissue

Sometimes can be appreciated

after wearing tight clothing or

jewellary on affected limb


Lymphadenopathy

Means a disease of the

lymph nodes

Lymph nodes become

swollen/ enlarged and

may be painful to touch

Lymphomas

Cancers originating either

from the lymphocytes in the

lymph nodes or the

lymphatic tissue in organs


Tonsil itis

Infection of the pharyngeal

tonsils

Tonsils are swollen,
Fever and pain during

swallowing usually present

This post was last modified on 08 April 2022