Important Mcqs For The Secod Lecture

Question 1

What is the markers of the pluripotent stem cells

Answer 1

Cd34 and cd44

Question 2

What are the cells responsible for lymphocyte to enter ln
What is the molecule responsible for exiting the lymphocyte from ln

Answer 2

High endothelial venue cells ( to get from blood to ln)
S1pR1

Question 3

Lymphocyte also get out of the lymph node to the lymph circulation by the efferent lymph vessel

Answer 3

True

Question 4

Double negative T cell site in thymus is
Double positive T cells in the thymus is

Answer 4

Cortex
Subcapsular region

Question 5

Malt are unencapsulated

Answer 5

True

Question 6

How iga protect the external surface of the mucosa

Answer 6

By prevent the microbes adhesion to the mucosa

Question 7

Does cardiac contain a cluster of lymph nodes

Answer 7

No

Question 8

What is auto (self) reactive T cells

Answer 8

These are binding to self ag so causing an autoimmune disease
Note that it is important for T cells to bind self mhc ( the mhc that is produced by my body gene that display both self and non self ag)
But it is not okay to bind to self mhc that display self ag