Tag: allergy

Questions Related to allergy

Which of the following causes almost unbearable irritation of the skin?
zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Lint of Gossypium

  2. Staminal hair of Tradescantia

  3. Prickles of Rosa indica

  4. Stinging hair of Urtica dioca

Show answer
Correct Option: D
Explanation:

The trichomes of Utrica cover the leaf and the stem surfaces, each trichome has a base attached to the epithelial layer, and a cell filled with irritant/allergent at the tip, that breaks on mechanical damage, touch, or when attempted to be eaten by herbivores. On breaking the chemical substances are injected into the predator causing unbearable irritation.

So, the correct answer is 'Stinging hair of Urtica dioca'

Which of the following stimulation results in increased gastric secretions?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Mast cells

  2. H$ _1$ histamine receptor

  3. H $ _2$ histamine receptor

  4. Both A and C

Show answer
Correct Option: C

Which of the following is a dangerous allergic reaction?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Asphyxia

  2. Anaphylaxis

  3. Asthma

  4. None of the above

Show answer
Correct Option: B

Which of the following cells secrete histamine?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Plasma cell

  2. Mast cells

  3. Monocytes

  4. NK-cells

Show answer
Correct Option: B
Explanation:

Mast cells are the type of white blood cells. They play important role in allergy and inflammatory reactions. They release chemicals like histamine upon exposure to the allergic component.

A noninfectious unnatural and unusual reaction to a substance or condition is 

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Immunity

  2. Allergy

  3. Infection

  4. Toxin

Show answer
Correct Option: B
Explanation:

Allergies, also known as allergic diseases are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances (non-infectious) in the environment.  Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling. Hence, Allergy is a noninfectious, unnatural and unusual reaction to a substance or condition.

So, the correct answer is 'Allergy'.

Excessive and inappropriate immune response to an antigen is 

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Anaphylaxis

  2. Multiple Sclerosis

  3. Allergy

  4. Immune deficiency

Show answer
Correct Option: C
Explanation:

Allergies, also known as allergic diseases are a number of conditions caused by hypersensitivity (excessive) of the immune system to typically harmless substances in the environment. Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath. Food, insect stings, and medications are common causes of severe reactions.

So, the correct answer is 'Allergy'.

How many sentences is/are true among the following sentences?
(a) Allergy is due to release of histamine and serotonin from mast cells.
(b) Cell mediated immunity is responsible for rejection of graft.
(c) Principles of vaccination is based on diversity of immune system.
(d) Both bone marrow and thymus provides micro environment for development and maturation of T-lymphocytes.

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. One

  2. Two

  3. Three

  4. Four

Show answer
Correct Option: A

Write true or false and correct the incorrect statement.
Allergens are the antibodies which include dust, pollen, certain foods, drugs and fur.

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. True

  2. False

Show answer
Correct Option: A

Antihistamine drugs are effective against

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Bacterial infection

  2. Viral infection

  3. Paraplegia

  4. Allergy

Show answer
Correct Option: D
Explanation:

Antihistamines are drugs that inhibit the action of histamine in the body by blocking the receptors of histamine. When the histamine recepotrs are stimulated by histamine, it may produce allergic reactions, such as itching, hay fever and rash or hives. Antihistamines treat the symptoms of such allergic reactions.
Thus, the correct answer is option (D), 'Allergy'.

Which of the following are the symptoms of eczema, a common skin disease?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Skin becomes thickened and reddish brown colour

  2. Skin drops off in the form of small scales

  3. There will be an intense itching

  4. All of the above

Show answer
Correct Option: D
Explanation:
The classic symptoms of eczema are: itching - this is the worst aspect because it can make the person scratch causing further rawness of the skin and possible infections to develop; redness - caused by extra blood flowing through the blood vessels in the skin in the affected area; a grainy appearance to the skin, caused by tiny fluid filled blisters just under the skin called vesicles; weeping when the blisters burst, either by themselves or because of scratching, and the fluid oozes on to the surface of the skin; crusts or scabs that form when the fluid dries; dry, scaly skin - this may be the result of the disease or it may also be the natural skin type of the family; dry skin can be a predisposing factor to developing eczema; pale patches of skin may appear because eczema can disturb the production of pigment which controls skin colour; lichenification - a leathery, thicker skin area in response to scratching.  
Therefore, the correct answer is option B.