Chapter 4 Part III

Question 1

lymphatic vessels functions (3)

Answer 1

drain excess interstitial fluid
transport lymph to lymph nodes (foreign antigen detection in lymph nodes)
transport lymph to blood stream

Question 2

structurally resemble continuous blood capillaries

Answer 2

lymphatic capillaries

Question 3

differences btwn lymphatic capillaries and continuous blood capillaries

Answer 3

1 blind- ended- suddenly begin
2 NO PERICYTES
3 Endothelial cells can overlap, but create clefts btwn cells
4 NO fenestrae and NO tight junctions btwn endothelial cells
5 Contain bundles of lymphatic anchoring filaments

Question 4

function of bundles of lymphatic anchoring filaments

Answer 4

support endothelial walls so capillaries stay open

Question 5

Endothelial cells in continuous blood capillaries can overlap and creates cleft btwn cells, which allows for:

Answer 5

easy movement of materials into and out of vessels

Question 6

small lymphatic vessels resemble _____

Answer 6

venules

Question 7

______ & ______ have larger LUMEN and thinner walls; tunics blend together more than veins

Answer 7

medium and large lymphatic vessels

Question 8

_______ of medium and large lymphatic vessels have endothelium and thin layer of CT with elastic fibers

Answer 8

tunica intima

Question 9

_______ of medium and large lymphatic vessels are THIN smooth muscle layer

Answer 9

tunica media

Question 10

_______ of medium and large lymphatic vessels are CT with collagen and elastic fibers

Answer 10

tunica adventitia

Question 11

_____ are PRESENT IN medium and large lymphatic vessels; they are spaced closely

Answer 11

valves

Question 12

_____ empty into venous system at junction of RIGHT internal jugular and subclavian veins

Answer 12

lymphatic ducts

Question 13

lymphatic ducts INCLUDE ____ & ____

Answer 13

right lymphatic duct

thoracic duct

Question 14

______ of lymphatic ducts have ENDOTHELIUM; several layers of COLLAGEN and ELASTIC fibers; layer of condensed elastic fibers

Answer 14

tunica intima

Question 15

_____ of lymphatic ducts are longitudinal and circular layers of smooth muscle

Answer 15

tunica media

Question 16

____ of lymphatic ducts are longitudinal smooth muscle cells; collagenous CT; vasa vasorum-like vessels

Answer 16

tunica adventitia