Md1 Block 3 Anatomy Abdomen 3 Part B Lymphatics

Front 1

Lymphatic vessels

Lymphatic vessels originate in

Back 1

connective tissue spaces as =

Hint 1

anastomosing capillaries.

Front 2

Lymphatic vessels

The capillaries flow into larger vessels called =

Back 2

collecting vessels.

Front 3

Lymphatic vessels

These drain into lymphatic ducts

Back 3

thoracic duct
right lymphatic duct

The ducts empty into the veins in the base of the =

Hint 3

neck

Front 4

Lymphatic vessels

Functions: The lymph vessels

Back 4

return to the blood the fluid and plasma proteins that escape from circulation.
return to the blood the lymphocytes of the recirculating pool.
add to the blood immunoglobulins (antibodies) that are formed in the lymph nodes.

Front 5

Lymphatic vessels
Distribution:
The lymphatic vessels (capillaries) are most numerous beneath body surfaces: 5ct

Back 5

skin
mucous membrane of gastrointestinal,
respiratory
genitourinary tracts
subserous tissues.

Front 6

Lymphatic vessels

there are a few significant differences. =
4ct

Back 6

-lack a well-developed basement membrane;
-begin blindly
-do not have pericytes
-Lymphatic capillary endothelial cells lack tight junctions

Front 7

Lymphatic vessels
have what kind of valves & compare them to Heme Veins.

Back 7

Simple bicuspid valves consisting of two layers
The valves on the lymphatic vessels are more numerous than those on veins.

Front 8

Lymphatic vessels
The walls of these large ducts thus resemble those of veins but are thinner.

Back 8

Tunica intima,
Tunica media and
Ttunica adventitia.

Front 9

Lymphatic Ducts

numerous valves. They also have autonomic nerve, fibers and small blood vessels in tunica adventitia.

Back 9

.

Front 10

The thoracic duct opens into the venous system at the root of the =

Back 10

neck on the left side by joining the junction of the left internal jugular vein and the subclavian vein or either one of these vessels.

Front 11

The right lymphatic duct opens into the venous system at the root of the =

Back 11

neck on the right side by joining the junction of the right internal jugular vein and the subclavian vein or either one of these vessels.

Front 12

____________ mostly in tunica adventitia is demonstrated with the trichrome stain. =

Back 12

Collagen

Front 13

is caused by a defect in the transport of lymph because of abnormal vessel development or damaged lymphatic vessels. Accumulation of fluid and proteins in the interstitial spaces leads to lymphedema. Protein-rich fluid in the interstitial space initiates an inflammatory reaction causing fibrosis, impaired immune responses, and adipose degeneration of the connective tissue. =

Back 13

Lymphedema

Front 14

________ is a parasitic infection of lymphatic vessels by Wuchereria bancrofti or Brugia malayi worms, transmitted by mosquito bites. This condition causes damage to the lymphatic vessels with chronic lymphedema of legs and genitals. Filariasis occurs in tropical countries.

Back 14

Filariasis (elephantiasis)

Front 15

_________ and __________ are caused by the accumulation of high fat containing fluid, or chyle, in the abdomen or thorax as a result of trauma, obstruction, or abnormal development of lymphatic vessels

Back 15

Chylous ascites and chylothorax