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The Lymphatic System (Sandy) > Spleen > Flashcards

Flashcards in Spleen Deck (17)
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1

How big is the spleen?

about 5 inches in length

2

What is the single largest mass of tissue in the lymphatic system?

spleen

3

Where is the spleen located?

in the left hypochondriac region
inferior to diaphragm
lateral and posterior to the stomach

4

Why does the spleen have depressions and what are they called?

the depressions are from neighboring organs
-renal depression
-colic depression (left flexure of the colon)
-gastric depression

5

What does the spleen have that is similar to the lymph nodes?

hilum
efferent vessels

6

Does the spleen have afferent vessels?

no

7

What is found in the hilum of the spleen?

splenic vein and artery

8

What makes up the stroma of the spleen?

capsule
trabeculae
reticular fibers

9

What makes up the parenchyma of the spleen?

red and white pulp

10

This contains lymphoid follicles with germinal centers just like lymph nodes.

white pulp

11

This is another location where antigen comes in contact with white blood cells.

white pulp

12

venous sinuses and sinusoids (very porous capillaries) are filled with blood and splenic cords that are rich in macrophages

red pulp

13

What are the 4 functions of the spleen (brief)?

-macrophage break down
-platelet/iron storage
-antigen encounters
-RBC production

14

functions of the spleen:
What happens with macrophages?

macrophages break down worn out red blood cells (acts as a blood filter)

15

functions of the spleen:
What is stored?

platelets and iron

16

functions of the spleen:
What happens with antigens?

antigens circulating in the blood encounters B and T lymphocytes

17

functions of the spleen:
What happens with RBC's?

RBC production for the fetus