Lymphoid Organs
Lymphoid Organs: Overview
This topic provides knowledge of the organs which are responsible for immune cell production. It also discusses their location and their mechanism with the aid of diagrams.
Important Questions on Lymphoid Organs
The two special types of lymphoid organs in humans are:

Which of the following organs is not involved in elicitation of immune response?

MALT constitutes below part of the lymphoid tissues in the human body:

Lymphoid tissues lining the respiratory and urino-genital tracts are known as MALT.

Fill up the blanks in the statement given below.
The primary lymphoid organs are _______ and _______.
Heroin commonly called “smack” is chemically _______.
_______ tumours remain confined to their original location and do not spread to other parts of the body.
The immune system comprises _______ cells and _______ cells.

Immature lymphocytes are primarily found in which one of the following organs?


-globulins are synthesised inside

Which one of the following organ is not a lymphoid organ?

Which of the following is not a lymphoid tissue ?

Name the secondary lymphoid organ which is a reservoir of erythrocytes.

Which of the following is not a lymphoid tissue?


Which of the following organs will receive only oxygenated blood?

All of the following are examples of mucosa associated lymphoid tissue except

Which of the following acts as a filter of the blood by trapping blood borne micro-organisms and also has a large reservoir of erythrocytes?

Primary lymphoid organs of the human body are

Fill in the blanks:
(i) The lymphoid organs provide the sites for interaction of lymphocytes with antigen, which then proliferate to become
(ii) The thymus is a lobed organ located near the heart and beneath the
(iii) Spleen has a large reservoir of

Which one of the following structures is considered as a secondary lymphoid organ?

Which of the following parts of the alimentary canal helps in providing immunity?
