Histo- lymphatics Flashcards Preview

Neuroanatomy final exam > Histo- lymphatics > Flashcards

Flashcards in Histo- lymphatics Deck (21):
1

Major functions of the lymphatic system:

1) Drain Excess Interstitial Fluid – return to blood stream to help maintain normal blood volume

2) Immune Response – produce, maintain, and distribute lymphocytes

3) Provide an Alternative Transportation Route for Hormones, Nutrients, and Waste Products

2

what are the different types of lymphocytes:

A) B cells
B) T cells
C) NK (natural killa) cells

3

Diffuse lymphatic tissue consists of what?

Accumulations of lymphocytes in the lamina propria of the alimentary canal, as well as respiratory, urinary, and reproductive tracts.

-No surrounding capsule

4

Lymphatic Nodules (a.k.a. Lymphatic Follicles) consist of what?

Accumulations of lymphocytes in the wall of alimentary canal, as well as respiratory, urinary, and reproductive tracts. (just like diffuse lymphatic tissue)

5

what are primary & secondary lymphatic nodules made of?

Primary- aggregation of primarily small lymphocytes

Secondary- will have a germinal center and a mantle zone

6

Tonsils, peyer's patches & the veriform appendix are all examples of _________

lymphatic nodules

7

what does MALT stand for? BALT? GALT?

MALT: Mucus-Associated Lymphatic Tissue

BALT: Bronchus-Associated Lymphatic tissue

GALT: Gut-associated lymphatic tissue

8

Lymph nodes are _______ ______ along pathway of lymphatic vessels

Capsuled organs

9

what are the parts of the Lymph node cortex?

A. superficial (nodular) cortex

B. deep cortex (paracortex)

10

the superficial (nodular) cortex of the Lymph node contains what?

1) lymphatic nodules (primary & secondary)

2) germinal centers

11

the medulla of the lymph nodes is made of medullary ______ and _______

medullary cords

medullary sinuses

12

Cells of Reticular Meshwork in lymph nodes:

1) Reticular cells
2) Dendritic cells (DCs)
3) Macrophages
4) Follicular dendritic cells

13

________ are extensions between cortex's of lymph nodes

trebecula

14

The flow of lymph through the lymph node:

Afferent Lymph Vessel

Subcapsular (Cortical) Sinus

Trabecular Sinus

Medullary Sinus

Efferent Lymph Vessel

15

The thymus is the site of ____________, where T cells mature

thymic cell education

16

Function of the Spleen:

Filters and monitors the blood immunologically just as the lymph nodes monitor lymph.

17

The spleen consists of:

Red & white pulp

18

the red pulp of the spleen consists of what?

consists of blood-filled venous sinuses (splenic sinuses)

surrounded by cords of splenic tissue called splenic (Billroth’s) cords

19

the white pulp of the spleen consists of what?

lymphatic tissue consisting mostly of lymphocytes

lymphocytes aggregate around branches of splenic artery (called central arteries)
-creates a periarterial lymphatic sheath (PALS)

20

red pulp’s primary role is __________

blood filtration

21

the white pulp carries out what type of functions?

immune functions similar to lymph nodes.