A nurse is caring for a client who has contact dermatitis after exposure to poison ivy. The nurse recognizes that this condition is mediated by what type of cells?

B cells

T cells

Mast cells

Answer and Explanation

The Correct Answer is B

Choice A reason:

B cells are not involved in contact dermatitis, as they do not produce antibodies or form immune complexes.

Choice B reason:

T cells are the type of cells that mediate contact dermatitis, which is a type of type IV hypersensitivity. T cells recognize the poison ivy antigens that bind to the skin proteins and release cytokines that recruit macrophages and other inflammatory cells. This leads to a delayed and localized reaction that manifests as erythema, edema, vesicles, and pruritus.

Choice C reason:

T cells are not the same as B cells, as they have different receptors and functions in the immune system.

Choice D reason:

Mast cells are not involved in contact dermatitis, as they do not express IgE antibodies or release histamine.

Nursing Test Bank

Quiz #1: RN Exams Pharmacology Exams Quiz #2: RN Exams Medical-Surgical Exams Quiz #3: RN Exams Fundamentals Exams Quiz #4: RN Exams Maternal-Newborn Exams Quiz #5: RN Exams Anatomy and Physiology Exams Quiz #6: RN Exams Obstetrics and Pediatrics Exams Quiz #7: RN Exams Fluid and Electrolytes Exams Quiz #8: RN Exams Community Health Exams Quiz #9: RN Exams Promoting Health across the lifespan Exams Quiz #10: RN Exams Multidimensional care Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Quiz #1: Naxlex RN Comprehensive online practice 2019 B with NGN Quiz #2: Naxlex RN Comprehensive Predictor 2023 Quiz #3: Naxlex RN Comprehensive Predictor 2023 Exit Exam A Quiz #4: Naxlex HESI Exit LPN Exam Quiz #5: Naxlex PN Comprehensive Predictor PN 2020 Quiz #6: Naxlex VATI PN Comprehensive Predictor 2020 Quiz #8: Naxlex PN Comprehensive Predictor 2023 - Exam 1 Quiz #10: Naxlex HESI PN Exit exam Quiz #11: Naxlex HESI PN EXIT Exam 2

Free Nursing Study Resources

Correct Answer is ["B","E"]

Explanation

Choice A reason:

Type I hypersensitivity is not involved in Graves' disease, as it does not involve IgE antibodies or mast cells.

Choice B reason:

Type II hypersensitivity is involved in Graves' disease, as it involves IgG antibodies that bind to the thyroid-stimulating hormone (TSH) receptors on the thyroid gland and stimulate the production of thyroid hormones. This leads to hyperthyroidism and manifestations such as goiter, exophthalmos, tachycardia, weight loss, or tremors.

Choice C reason:

Type III hypersensitivity is not involved in Graves' disease, as it does not involve immune complexes or complement activation.

Choice D reason:

Type IV hypersensitivity is not involved in Graves' disease, as it does not involve cytotoxic T cells or helper T cells.

Choice E reason:

Type V hypersensitivity is also involved in Graves' disease, as it involves the stimulation of target cells by antibodies that act as agonists for cell surface receptors. This leads to an increased function of the target organ or tissue.

A. Gram-positive cocci B. Gram-negative cocci C. Gram-positive bacilli D. Gram-negative bacilli

Correct Answer is A

Explanation

Choice A reason:

Gram-positive cocci are bacteria that have a spherical shape and stain purple with Gram stain due to their thick peptidoglycan cell wall. Streptococcus pyogenes is an example of gram-positive cocci that can cause infections such as pharyngitis, impetigo, cellulitis, necrotizing fasciitis, or rheumatic fever.

Choice B reason:

Gram-negative cocci are bacteria that have a spherical shape and stain pink with Gram stain due to their thin peptidoglycan cell wall and outer membrane. Neisseria gonorrhoeae and Neisseria meningitidis are examples of gram-negative cocci that can cause infections such as gonorrhea, meningitis, or septicemia.

Choice C reason:

Gram-positive bacilli are bacteria that have a rod-shaped shape and stain purple with Gram stain due to their thick peptidoglycan cell wall. Bacillus anthracis and Clostridium botulinum are examples of gram-positive bacilli that can cause infections such as anthrax, botulism, or tetanus.

Choice D reason:

Gram-negative bacilli are bacteria that have a rod-shaped shape and stain pink with Gram stain due to their thin peptidoglycan cell wall and outer membrane. Escherichia coli and Pseudomonas aeruginosa are examples of gram-negative bacilli that can cause infections such as urinary tract infection, wound infection, or sepsis.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

A nurse is caring for a client who has contact dermatitis after exposure to poison ivy. The nurse recognizes that this condition is mediated by what type of cells?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has Graves' disease. The nurse understands that this condition is caused by what type of hypersensitivity? (Select all that apply.)

Correct Answer is ["B","E"]

Explanation

A nurse is caring for a client who has an infection caused by Streptococcus pyogenes. The nurse understands that this microorganism belongs to what group of bacteria?

Correct Answer is A

Explanation

A nurse is caring for a client who has an open abdominal wound with moderate drainage. Which of the following types of dressings should the nurse use to promote moist wound healing?

A nurse is caring for a client who has an infection caused by Candida albicans. The nurse understands that this microorganism belongs to what group of microorganisms?

A nurse is caring for a client who has rheumatoid arthritis (RA). The nurse understands that this condition is caused by what type of hypersensitivity?

A nurse is caring for a client who has leukemia. The nurse understands that this condition is characterized by what type of neoplasia?

A nurse is caring for a client who has hypernatremia. Which of the following actions should the nurse take? (Select all that apply.)

A nurse is teaching a client who has a family history of breast cancer about the risk factors and prevention strategies. The nurse informs the client that one of the cellular adaptations that can increase the risk of breast cancer is:

A nurse is planning interventions for a client who has a chronic wound on his lower leg. Which of the following actions should the nurse include in the plan? (Select all that apply.)