EASY
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The fluid which is present outside the cell in interstitial space forms due to

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Important Questions on Body Fluids and Circulation

MEDIUM
Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.
EASY
In human Thymus gland growth occurs up to;
MEDIUM
Statement I: Due to HIV, the number of TH cells progressively decreases in an infected person.
Statement II: The thymus gland of mammals is a secondary lymphoid organ.
MEDIUM
Given below is the diagram of the human lymphatic system, where A, B, C, and D are lymphoid organs. Select incorrect options regarding the lymphoid organs labeled as A, B, C, and D.
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EASY
Name the two main lymphatic organs in humans.
MEDIUM
The _____1_____ is the main lymphoid organ where all blood cells _____2____ lymphocytes are produced. The_____3_____ is a lobed organ located near the heart and beneath the breastbone. The_____3_____is quite large at the time of birth but keeps reducing in size with age and by the time puberty is attained it reduces to a very small size. Both _____1_____and _____3_____provide micro-environments for the development and maturation of T-lymphocytes.
HARD
How does interstitial fluid or tissue fluid form?
MEDIUM
Which of the following glands is large-sized at birth but reduces in size with ageing?
MEDIUM

Read the following statements and identify if they are true (T) or false (F):

(i) Booster response is also called 'anamnestic response'.

(ii) Allergy is due to release of chemicals like histamine and serotonin from mast cells.

(iii) Modern day lifestyle has resulted in lowering of immunity and more sensitivity to allergens.

(iv) Primary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells.

(v) Passive immunity is slow and takes time to give its full effective response.

  (i) (ii) (iii) (iv) (v)
(1) T T T F F
(2) T T F T F
(3) F F T F F
(4) F T F T F

 

HARD
What would happen to immune system, if thymus gland is removed from the body of a person?
EASY
Which of the following is not a lymphoid tissue?
MEDIUM
The site where lymphocytes interact with antigens and proliferate to become effector cells are
EASY
Gamma immunoglobulins are synthesized inside:
EASY
Which of the following options is incorrect with respect to secondary lymphoid organs?
MEDIUM

Assertion: Lymph in lymphatic system is known as tissue fluid.

Reason: It consists of plasma proteins, RBCs and WBCs.

MEDIUM

Read the following statement:

(i) The spleen is a large reservoir of RBCs.

(ii) Lymph nodes serve to trap the microorganisms which happen to get into the lymph and tissue fluid.

(iii) Mucosa Associated Lymphoid Tissue (MALT) constitutes 50% of the lymphoid tissue in the human body.

(iv) Thymus acts as a filter of blood by trapping blood-borne microorganisms.

(v) Only thymus provides a microenvironment for development and maturation of T lymphocytes.

Which of the above statements are correct?

EASY

Identify the incorrect statements from the ones given below:

(i) Peyer’s patches are also called 'abdominal tonsils'.

(ii) Immunoglobulins are chemically lipoproteins.

(iii) Spleen is a large bean-shaped organ which mainly contains lymphocytes and phagocytes.

(iv) All lymphocytes are phagocytic and engulf pathogens.

MEDIUM

The important function of the spleen is/are:

MEDIUM
Lymph nodes are secondary lymphoid organs. Explain the role of lymph nodes in our immune response.