Anatomy - Practical 09: Lymphoreticular Microanatomy

Question 1

where do lymphoctes, proliferate, differentiate and mature?

a. blood
b. spleen
c. lymphatic tissues

Answer 1

c.lymphatic tissues

Question 2

what happens to lymphocytes in the bone marrow. MALT and thymus?

a. proliferate
b. differentiate
c. programmed
d. mature

Answer 2

c.programmed

Question 3

which of these groups make up the secondary tissues and organs

a. bone marrow and thymus
b. lymph nodes, spleen, mucosa associated lymphoid tissue

Answer 3

b.lymph nodes, spleen, mucosa associated lymphoid tissue

peripheral structures that maintain mature but naive lymphocytes and initiate and immune response

Question 4

which of these groups make up the primary tissues and organs

a. bone marrow and thymus
b. lymph nodes, spleen, mucosa associated lymphoid tissue

Answer 4

a.bone marrow and thymus

Question 5

which cells release cytokines in response to an antigen

a. t lymphoytes
b. cytotoxic t cells
c. specific t killer cells

Answer 5

a.t lymphoytes

Question 6

which cells are produced in the thymus?

a. t lymphocyte
b. b lymphocyte
c. immunoblast

Answer 6

a.t lymphocyte

Question 7

what causes transformation of lymphocytes into immunoblasts?

a. cytokines
b. foreign pathogen
c. antigens
d. antigen presenting cells

Answer 7

d.antigen presenting cells

Question 8

which of these is the function of t helper cells?

a. help activate B and cytotoxic t cells
b. can functionally surpress immune response to foreign and self antigens to prevent autoimmune disease
c. kill target cells such as virus infected /cancer transformed/parasites/transformed cells

Answer 8

a.help activate B and cytotoxic t cells

Question 9

which of these is the function of t surpressor cells?

a. help activate B and cytotoxic t cells
b. can functionally surpress immune response to foreign and self antigens to prevent autoimmune disease
c. kill target cells such as virus infected /cancer transformed/parasites/transformed cells

Answer 9

b.can functionally surpress immune response to foreign and self antigens to prevent autoimmune disease

Question 10

which of these is the function of t killer cells?

a. help activate B and cytotoxic t cells
b. can functionally surpress immune response to foreign and self antigens to prevent autoimmune disease
c. kill target cells such as virus infected /cancer transformed/parasites/transformed cells

Answer 10

c.kill target cells such as virus infected /cancer transformed/parasites/transformed cells

Question 11

what is the role of reticular cells?

a. secrete type 3 collagen and ground substance , forms an intricate network for immune cells to reside in
b. specific to the thymus, assist with t lymphocte education
c. antigen presenting cells, monitor environment for foreign substances
d. work as APCs and phagocytes

Answer 11

a.secrete type 3 collagen and ground substance , forms an intricate network for immune cells to reside in

Question 12

what is the role of epithelioreticular cells?

a. secrete type 3 collagen and ground substance , forms an intricate network for immune cells to reside in
b. specific to the thymus, assist with t lymphocte education
c. antigen presenting cells, monitor environment for foreign substances
d. work as APCs and phagocytes

Answer 12

b. specific to the thymus, assist with t lymphocte education

Question 13

what is the role of dendritic cells?

a. secrete type 3 collagen and ground substance , forms an intricate network for immune cells to reside in
b. specific to the thymus, assist with t lymphocte education
c. antigen presenting cells, monitor environment for foreign substances
d. work as APCs and phagocytes

Answer 13

c.antigen presenting cells, monitor environment for foreign substances

Question 14

what is the role of macrophage cells?

a. secrete type 3 collagen and ground substance , forms an intricate network for immune cells to reside in
b. specific to the thymus, assist with t lymphocte education
c. antigen presenting cells, monitor environment for foreign substances
d. work as APCs and phagocytes

Answer 14

d.work as APCs and phagocytes

Question 15

what has a spherical accumulation of lymphocytes with a pale staining germinal centre and dark stained outer corona?

a. thymus
b. lymphoid follice
c. hassals corpuscles
d. lymph nodes

Answer 15

b.lymphoid follice

Question 16

what does the pale staining germinal centre of the lymphoid follice contain?

a. activated b immunoblasts
b. small transient b lymphocytes

Answer 16

a.activated b immunoblasts

Question 17

what does the dark staining outer corona of the lymphoid follice contain?

a. activated b immunoblasts
b. small transient b lymphocytes

Answer 17

b.small transient b lymphocytes

Question 18

what does the dark staining outer corona of the lymphoid follice contain?

a. activated b immunoblasts
b. small transient b lymphocytes

Answer 18

b.small transient b lymphocytes

Question 19

lymphoid follices are found in all lymphoid organs except ..

a. MALT
b. bone marrow
c. thymus

Answer 19

c.thymus

Question 20

what cells are produced in the thymus?

a. b cells
b. t cells

Answer 20

b.t cells

Question 21

the thymus is functional from birth until what stage, when it is replaced by adipose tissue?

a. childhood
b. puberty
c. aldulthood
d. old age

Answer 21

b.puberty

Question 22

the thymus is divided into ……. by septa and CY capsule?

a. chambers
b. sections
c. lobes
d. lobules

Answer 22

d.lobules

Question 23

in the thymus t lymphocytes are kept in a meshwork of what?

a. fibrin
b. reticular cells
c. epithelioreticular cells
d. collagen

Answer 23

c.epithelioreticular cells

Question 24

what does the dark staining cortex of the thymus contain?

a. naive t lymphocytes and macrophages
b. maturing t lymphocytes , hassals corpuscles and immunocompetent t lymphocytes

Answer 24

a.naive t lymphocytes and macrophages

Question 25

what does the light staining medulla of the thymus contain? a. naive t lymphocytes and macrophages b. maturing t lymphocytes , hassals corpuscles and immunocompetent t lymphocytes

Answer 25

b.maturing t lymphocytes , hassals corpuscles and immunocompetent t lymphocytes

Question 26

what are the macrophages in the cortex of the thymus responsible for phagocytosis of? a. foreign cells b. immautre t lymphocytes c. t lymphocytes not fulfilling the thymic education requirement

Answer 26

c.t lymphocytes not fulfilling the thymic education requirement

Question 27

which part of the thymus is light staining? a. cortex b. medulla

Answer 27

b.medulla

Question 28

in which part of the thymus do t lymphocytes undergo an assessment of immunocompetence? a. cortex b. medulla

Answer 28

b.medulla

Question 29

where do immunocompetent t cells go from the medulla of the thymus? a. cortex b. blood c. lymph

Answer 29

b.blood

Question 30

what is found only in the medulla of the thymus? a. lymphoid follice b. macrophages c. hassalls corpuscles

Answer 30

c.hassalls corpuscles

Question 31

concentrically arranged flattened epithelioreticular cells producing keratohylin are found in which structure a. hassals corpuscles b. thymus c. lymphoid follice

Answer 31

a.hassals corpuscles

Question 32

what cell type makes up hassals corpuscles? a. reticulr b. epithelioreticular c. macrophages

Answer 32

b.epithelioreticular

Question 33

the blood thymus barrier is composed on continuous endothelium of blood capillaries, thick basal lamina, epithelioreticular cells and which other cell type? a. monocytes b. macrophages c. b lymphocytes d. t lymphocytes

Answer 33

b.macrophages

Question 34

which organ is kidney shaped and encapsulated ranging from 1mm to 2 cm a. spleen b. thymus c. lymph nodes

Answer 34

c.lymph nodes

Question 35

which organ deals with lymph borne antigens? a. spleen b. thymus c. lymph nodes

Answer 35

c.lymph nodes

Question 36

where do afferent lymphatic vessels enter the lymph nodes? a. dense ct capsule with trabeculae b. outer curved boundary c. hilum

Answer 36

b.outer curved boundary

Question 37

where do efferent lymphatic vessels enter the lymph nodes? a. dense ct capsule with trabeculae b. outer curved boundary c. hilum

Answer 37

c.hilum

Question 38

which part of the lymph node is made up of the subscapular and trabecular sinuses, reticular cell, dendritic and macrophage meshwork and follicles of b lymphocytes? a. outer cortex b. inner cortex c. medulla

Answer 38

a.outer cortex

Question 39

what part of the lymph node us made up of mostly t lymphocytes? a. outer cortex b. inner cortex c. medulla

Answer 39

b.inner cortex

Question 40

which part of the lymph node is made up of medullary cords, medullary sinuses and dendritic and macrophage cells? a. outer cortex b. inner cortex c. medulla

Answer 40

c.medulla

Question 41

which organ detects and responds to blood borne antigen? a. thymus b. spleen c. lymph node

Answer 41

b.spleen

Question 42

what organ filters the blood and destroys worn out rbc? a. thymus b. spleen c. lymph node

Answer 42

b.spleen

Question 43

what forms the site of passage for the splenic artery , vein and lymphatic vessels? a. hilum b. dense ct capsule c. trabeculae

Answer 43

a.hilum

Question 44

splenic pulp does not contain which of these elements? a. reticular tissue b. b and t lymphocytes c. macrophages d. dendritic cells e. monocytes

Answer 44

e. monocytes

Question 45

the periarterial lymphoid sheath contains what cells arranged around a central artery? a. b lymphocytes b. t lymphocytes c. dendritic cells d. macrophages

Answer 45

b. t lymphocytes

Question 46

the periarterial lymphoid sheath and lymphoid follicles make up which part of the spleen? a. white pulp b. red pulp

Answer 46

a.white pulp

Question 47

what cells make up the lymphoid follicles a. t lymphocytes b. b lymphocytes

Answer 47

b. b lymphocytes

Question 48

Which cells are initially activated by APCs in the spleen? a. t lymphocytes b. b lymphocytes

Answer 48

a. t lymphocytes

Question 49

which part of the spleen is made up of the tissues rich in blood sinusoids with elongated reticular tissue and wbc a. white pulp b. red pulp

Answer 49

b. red pulp

Question 50

what type of blood sinusoids are present in the red pulp? a. continuous b. discontinuous c. fenestrated

Answer 50

c.fenestrated

Question 51

Bilroths cords containing reticular cells and fibres are found in which organs a. spleen b. lymph nodes c. thymus

Answer 51

a.spleen

Question 52

what is found deep to the epithelium in the lamina propria to make up the MALT? a. lamina propria b. hassals corpuscles c. red pulp

Answer 52

a. lamina propria

Question 53

what epithelium lines the tonsils? a.ssk b.sc c,pscc

Answer 53

c,pscc

Question 54

what epithelium lines the palatine and lingual tonsils? a.ssk b.sc c,pscc d.ssnk

Answer 54

d.ssnk