Presentation is loading. Please wait.

Presentation is loading. Please wait.


Similar presentations

Presentation on theme: "ANATOMY OF LYMPHATIC SYSTEM"— Presentation transcript:

Mario Makarević 2nd year 2013/2014 Mentor: A. Žmegač Horvat

2 Lymph fluid similar to blood plasma filters out of blood vessels
no erythrocytes or platelets less proteins more leukocytes filters out of blood vessels lymph capillaries collect interstitial fluid

3 Composition lymphatic vessels lymphatic organs lymphatic tissue

4 Lymphatic vessels lymph capillary
single layer of overlapping endothelial cells blind end absent from brain, spinal cord, splenic pulp, bone marrow located next to blood capillaries in tissue spaces

5 Lymphatic vessels lymph vessels afferent and efferent
three-layered wall thinner than vein semilunar valves, contractile lymphangion

6 Lymphatic vessels lymph trunks
confluence of many efferent lymph vessels jugular lymph trunks subclavian lymph trunks bronchomediastinal lymph trunks lumbar lymph trunks intestinal lymph trunk—unpaired

7 Lymphatic vessels lymph ducts right lymphatic duct and thoracic duct
return fluid to blood

8 right lymphatic duct about 1.5 cm in length right venous angle
lymph from right half of head, neck, thorax and right upper limb

9 thoracic duct about 38-45 cm in length
> front of L1 as cisterna chyli – emulsified fats and free fatty acids absorbed by lacteals > aortic hiatus of the diaphragm > ascends along on the front of the vertebral column, between thoracic aorta and azygos vein > left venous angle

10 Lymph nodes collections of stationary lymph tissue
from a few millimeters to about 1–2 cm long fibrous capsule afferent lymph vessels entering at the periphery, efferent lymph vessels emerging at the hilum cortex and medulla



13 Cortex outer region directly beneath capsule
densely packed lymphocytes (B-cells) arranged in follicles – germinal center when challenged with an antigen deeper cortex – T-cells subcapsular sinus drains into trabecular

14 Medulla inner region strands called medullary cords – B-cells, macrophages and plasma cells large blood vessels medullary sinuses

15 Major sites of lymph node concentration
cervical – head and neck axillary – hand, arm and breast mediastinal – abdominal cavity inguinal – lower extremities and external genital organs

16 Diffuse lymphatic tissue
not enclosed by a capsule reticular connective tissue with lymphatic nodules almost every organ, lamina propria of mucous membranes tonsils, Peyer’s patches, appendix

17 Lymph circulation must be returned to blood stream to maintain blood volume and pressure antibodies, lymphocytes, and monocytes obstruction leads to edema


19 Lymph circulation no central pump slow movement
lymph is kept moving by: contraction of adjacent skeletal muscle and arterial pulsation contraction of smooth muscles – peristalsis

20 Metastasis bacteria or body cells spread from one body part to another
breast cancer to axillary nodes chemotherapy

21 Sources


Similar presentations

Ads by Google