Human Health and Diseases Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following substances is released by mast cells during an allergic reaction?

Histamine
Insulin
Dopamine
Serotonin
1

Histamine is released by mast cells during allergic reactions, leading to symptoms like swelling and itching.

Which of the following statements about inflammation is correct?

Inflammation only occurs in viral infections.
Inflammation helps in eliminating pathogens and repairing tissues.
Inflammation decreases blood flow to the affected area.
Inflammation is not a part of the immune response.
2

Inflammation is a defense mechanism that helps eliminate pathogens and initiate tissue repair.

Which of the following diseases is caused by a helminthic parasite?

Malaria
Filariasis
Pneumonia
Typhoid
2

Filariasis is caused by the helminthic parasite Wuchereria bancrofti, which affects the lymphatic system.

Which of the following is the primary mode of transmission for Hepatitis B?

Contaminated food
Mosquito bites
Blood and body fluids
Airborne droplets
3

Hepatitis B is primarily transmitted through blood and body fluids, including sexual contact and contaminated needles.

Which of the following is NOT a mode of HIV transmission?

Unprotected sexual contact
Blood transfusion
Sharing contaminated needles
Casual contact like hugging
4

HIV is not transmitted through casual contact such as hugging, shaking hands, or sharing food.

Which of the following is a function of the lymphatic system?

Production of red blood cells
Transport of oxygen
Filtration of lymph and immune response
Production of digestive enzymes
3

The lymphatic system helps filter lymph and plays a key role in immune response.

Which organ is the primary site for T-lymphocyte maturation?

Bone marrow
Spleen
Thymus
Lymph nodes
3

The thymus is the primary site for the maturation of T-lymphocytes, which are crucial for cell-mediated immunity.

Which of the following is a major symptom of ascariasis?

Severe joint pain
Skin rashes
Intestinal blockage
Grayish-blue lips
3

Ascariasis, caused by Ascaris lumbricoides, can lead to intestinal blockage due to excessive worm load.

Which of the following statements about lymph nodes is incorrect?

Lymph nodes filter lymph and trap pathogens.
Lymph nodes contain immune cells like lymphocytes.
Lymph nodes produce red blood cells.
Lymph nodes are part of the immune system.
3

Lymph nodes do not produce red blood cells; their main function is to filter lymph and house immune cells.

Which of the following cells engulf and destroy pathogens in the body?

Erythrocytes
Macrophages
Basophils
Mast cells
2

Macrophages are phagocytic cells that engulf and destroy pathogens as part of innate immunity.

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