Lymphatics

Question 1

What is the composition of lymphoid system

Answer 1

lymphocytes, lymphoid organs and lymphatic vessels

Question 2

What is the composition of the lymphoid organs

Answer 2

Bone marrow
Lymph nodes
Thymus
Spleen
MALT

Question 3

What is the main function of the lymphoid system

Answer 3

It protects the body from pathogens and diseased cells

Question 4

It is organized into organs and tissues that are functionally unified via blood and lymph vascular systems

Answer 4

Immune System

Question 5

It is also known as central lymphoid organs

Answer 5

Primary lymphoid organs

Question 6

It is the site where lymphocytes mature

Answer 6

Primary lymphoid organs

Question 7

Where is B cells produced

Answer 7

Bone marrow

Question 8

Where is T cells produced

Answer 8

Thymus

Question 9

It is also known as peripheral lymphoid tissue

Answer 9

Secondary lymphoid organs

Question 10

Where are the secondary lymphoid organs distriibuted

Answer 10

blood or lymph

Question 11

What are the secondary lymphoid organs

Answer 11

lymph nodes
spleen
diffuse lymphoid tissues

Question 12

It is a small, bean shaped, encapsulated organs located

throughout the body along lymphatic vessels.

Answer 12

Lymph nodes

Question 13

It serves as filters of lymph

Answer 13

Lymph nodes

Question 14

It is a dense connective tissue enclosing the node

Answer 14

Capsule

Question 15

It is the space underneath the capsule that receives the lymph

Answer 15

Subcapsular sinus

Question 16

It is the connective tissue that extends inward from the capsule

Answer 16

Trabecula

Question 17

It is the spaces alongside trabeculae in which lymph flows from the subcapsular sinus into the cortex.

Answer 17

Trabecular sinuses

Question 18

It is the outer region of the node

Answer 18

Cortex

Question 19

It is the region adjacent to the capsule.

Answer 19

Outer cortex

Question 20

It is spherical clusters of B lymphocytes.

Answer 20

Nodules

Question 21

It is the light center where B lymphocytes differentiate to plasma cells

Answer 21

Germinal Center

Question 22

It is the region between the outer cortex and the medulla that is free of nodules.

Answer 22

Inner cortex (paracortex)

Question 23

The inner part of the node

Answer 23

Medulla

Question 24

It contains antibody
secreting plasma cells, macrophages, and
B lymphocytes.

Answer 24

Medullary cords

Question 25

The intervening spaces in which lymph flows before exiting the node via efferent lymphatic vessels.

Answer 25

Medullary sinuses

Question 26

It responds to | antigens that enter the body through mucosae.

Answer 26

MUCOSA-ASSOCIATED LYMPHOID TISSUE(MALT)

Question 27

Where does the MALT underly

Answer 27

Digestive and respiratory systems

Question 28

What are the examples of MALT

Answer 28

Tonsils Lymphoid aggregates (nodules) Dispersed immune cells

Question 29

It is found in the underlying connective tissue | surrounding the upper part of the pharynx.

Answer 29

Tonsils

Question 30

It covers the numerous nodules that compromise the | palatine tonsil.

Answer 30

Stratified Squamous Non-Keratinized Epithelium

Question 31

Spherical aggregations of lymphocytes that usually | have germinal centers.

Answer 31

Nodules

Question 32

Infoldings of the epithelium into the underlying | connective tissue.

Answer 32

Crypts

Question 33

It is large numbers of plasma cells are usually seen in the underlying connective tissue near the epithelium.

Answer 33

Plasma cells

Question 34

The largest secondary lymphoid organ in the body

Answer 34

Spleen

Question 35

What are the two compartments of the spleen

Answer 35

Red pulp | White pulp

Question 36

It filters the blood of foreign material | and old or damaged red blood cells

Answer 36

Red Pulp

Question 37

The site of immune reactions to bloodborne | antigens

Answer 37

White pulp

Question 38

The spleen is also the storage site of what

Answer 38

RBC, platelets and iron

Question 39

It is the dense connective tissue enclosing the organ.

Answer 39

Capsule

Question 40

A connective tissue that extends inward from the capsule through which blood vessels enter the pulp.

Answer 40

Trabecula

Question 41

It appears basophilic due to the large number of | nuclei.

Answer 41

White pulp

Question 42

Clusters of B lymphocytes located on central arterioles. They usually contain a germinal center of activated B lymphocytes.

Answer 42

Splenic nodules

Question 43

Branches of trabecular arteries coated by PALS and adjacent to nodules.

Answer 43

Central Arterioles

Question 44

cylindrical mass of mature T lymphocytes that surrounds central arterioles.

Answer 44

PERIARTERIOLAR LYMPHATIC SHEATH (PAL)

Question 45

It filters and degrades red blood cells (RBCs)

Answer 45

Red pulp

Question 46

The region between white and red pulp where macrophages, dendritic cells, and lymphocytes interact.

Answer 46

Marginal zone

Question 47

The primary lymphoid organ in which T lymphocytes proliferate and mature before distribution to peripheral lymphoid tissues.

Answer 47

Thymus

Question 48

Is well-developed and fully | functional.

Answer 48

Neonatal Thymus

Question 49

Thin connective tissue layer surrounding the thymus | that extends inwards to form incomplete lobules.

Answer 49

Capsule

Question 50

The outer darker, region of small lymphocytes.

Answer 50

Cortex

Question 51

A small nuclei of condensed | chromatin.

Answer 51

T lymphocytes

Question 52

Cells with oval nuclei and lightly stained cytoplasm with processes.

Answer 52

Epithelial reticular cells

Question 53

Large cells that | phagocytize T cells marked for removal.

Answer 53

Macrophages

Question 54

The inner, lighter region of larger lymphocytes.

Answer 54

Medulla

Question 55

Closely packed, concentrically arranged epithelial reticular cells

Answer 55

Hassell's Corpuscle

Question 56

it is the most readily identifiable feature of the thymus.

Answer 56

Hassell's Corpuscle