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Histo-L3,Thymus gland and lymph nodes

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L3, Thymus gland and lymph nodes


Lecture video



MCQ

1) the thymus gland has many efferent and afferent vessels 

A-true

B-false


2) the cortex of the thymus stains more  pale than the medulla due to prescence of more small lymphocytes

A-true

B-false


3) the cortex of the thymus include all of the following cells except 

A-lymphoblasts

B-hassall's corpuscles

C-macrophages

D-non of the above 


4) which of the follwing is responsible for secretion of different hormones of the thymus 

A-lymphoblasts

B-T-lymphocytes

C-epithelial reticular cells 

D-macrophages


5) the thymic barrier 

A-protect T-lymphocytes from circulating blood 

B-it is formed from endothelial cells of thymic blood capillaries 

C-it is formed from the epithelial reticular cells 

D- all of the above 


6) the nuclear chromatin is condensed in primary lymphoid follicles 

A-true

B-false


7) the mantle region is mainly composed of B-lymphocytes , APCs and reticular cell macrophages

A-true

B-false


8) the cortical sinus empty the lymph into 

A-subcapsular sinus

B-thoracic duct

C-directly to the blood

D-medullary sinuses 


Answers

1)b

2)b

3)b

4)c

5)d

6)a

7)b

8)d


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