47 Lacteals are found in the a. lymph nodes b smail intestine c. respiratory tra

Question

47 Lacteals are found in the a. lymph nodes b smail intestine c. respiratory tract d. thymus e. red bone marrow sareudiis dhog the lymphatie vessels, bymph is: a stored in the spleen b. released into interstitial fluid c. absorbed by the Gl tract d. filtered by the tonsils e all of the above 9. Which of the following best describes the function of the thymus? a. b. c. d. e. forms all macrophages destroys damaged erythrocytes produces T lymphocytes produces plasma cells none of the above 50. Arcas of the spleen that contain large aggregations of lymphocytes are known as a. MALT b. tonsils c. white pulp. d. red pulp e. lymph nodes. 51. Immunity that results from exposure to an antigen in the environment is called: a. naturally acquired active immunity b. natural passive immunity c. innate immunity d. artificially acquired active immunity e autoimmunity 52. Which of the following is an example of passive immunity? a. exposure to an antigen b. injection of weakened viruses c. passage of lgG antibodies from a pregnant mother to her fetus d. booster shot of vaccine e. all of the above

Explanation / Answer

47 Lacteals are found in :

Ans- b. Small intestine

Explanation- Lacteals are the specialised lymphatic capillaries located in the villi of small intestine.

48 After circulating through the lymphatic vessels, lymph is:

Ans- b. Released into interstitial fluid

Explanation- Lymph is colourless fluid comprises to the lymphatic system. It circulated through lymphatic vessels and eventually gets returned to the blood from where it is originated and that is into interstitial fluid.

49 Which of the following best describes the function of the thymus

Ans- c. Produces T lymphocytes

Explanation- Thymus is one of the lymphatic organ and play vital role in body defence mechanism by producing T lymphocytes that fights with harmful pathogens.

50 Areas of the spleen that contains large aggregations of lymphocytes are known as

Ans- c. white pulp

Explanation- spleen is an important organ in the lymphatic system. Spleen is made up of two types of tissues white pulp and red pulp. Red pulp is the region of blood filled cavities where as white pulp contains large aggregations of lymphocytes

51 Immunity that results from exposure to an antigen in the environment is called

Ans- a. naturally acquired active immunity

Explanation-Fight back mechanism of body is known as an immunity. Immunity can be active or passive and natural or artificial . Producing antibodies after exposure of antigens is considered as naturally acquired immunity.

52 Which of the following is an example of passive immunity?

Ans- c. Passage of IgG antibodies from a pregnant mother to her fetus

Explanation-In passive type of immunity there is transport of antibodies from one organism to other thus Passage of IgG antibodies from a pregnant mother to her fetus is an example of passive immunity.

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