Nokea
When an attenuated toxin is administered to a client, the B-cell lymphocytes create memory cells that recognize the antigen if it invades the body at a future time. What kind of immunity is this?
- A. Artificially acquired active immunity
- B. Passive immunity
- C. Natural immunity
- D. Naturally acquired active immunity
Correct Answer: A
Rationale: Artificially acquired active immunity results from the administration of a killed or weakened microorganism or toxoid (attenuated toxin). The memory cells manufactured by the B lymphocytes 'remember' the killed or weakened antigen and recognize it if a future invasion occurs. Passive immunity develops when ready-made antibodies are given to a susceptible person. Natural immunity is not one of the types of immunity. Naturally acquired active immunity occurs as a direct result of infection by a specific microorganism.
You may also like to solve these questions
What is the function of the thymus gland?
- A. Produces stem cells
- B. Programs B lymphocytes to become regulator or effector B cells
- C. Develops the lymphatic system
- D. Programs T lymphocytes to become regulator or effector T cells
Correct Answer: D
Rationale: The thymus gland is located in the neck below the thyroid gland. It extends into the thorax behind the top of the sternum. The thymus gland produces lymphocytes during fetal development. It may be the embryonic origin of other lymphoid structures such as the spleen and lymph nodes. After birth, the thymus gland programs T lymphocytes to become regulator or effector T cells. The thymus gland becomes smaller during adolescence but retains some activity throughout the life cycle. The other options are incorrect.
A client with chronic renal failure has begun treatment with a colony-stimulating factor. What medication does the nurse anticipate administering to the client that will promote the production of blood cells?
- A. Etanercept (Enbrel)
- B. Infliximab (Remicade)
- C. Epoetin alfa (Epogen)
- D. Adalimumab (Humira)
Correct Answer: C
Rationale: Colony-stimulating factors are cytokines that prompt the bone marrow to produce, mature, and promote the functions of blood cells. CSFs enable stem cells in bone marrow to differentiate into specific types of cells such as leukocytes, erythrocytes, and platelets. Pharmacologic preparation of CSFs, such as epoetin alfa (Epogen), is used to promote the natural production of blood cells in people whose own hematopoietic functions have become compromised. The other medications are tumor necrosis factor inhibitors.
A client asks the nurse about the importance of taking supplements to maximize immune function. The client is healthy and does not have any medical problems. What is the best information to give to the client?
- A. Instead of taking supplements, eat a lot of fruits and vegetables to maximize immune function.
- B. Adopt a vegetarian diet and omit all meats, and you will maximize immune function.
- C. You should take a variety of vitamin and mineral supplements to maximize immune function.
- D. Eating a moderate diet that is balanced and varied will maximize immune function.
Correct Answer: D
Rationale: Until more is known about nutrient interactions, the best dietary advice to maximize immune function in healthy people is to eat a moderate diet that is balanced and varied. Eating fruits and vegetables and a vegetarian lifestyle may be healthy choices but do not maximize immune function as a balanced diet will.
The nursing students are learning about the immune system in their anatomy and physiology class. What would these students learn is a component of the immune system?
- A. Stem cells
- B. Cytokines
- C. Lymphoid tissues
- D. Red blood cells
Correct Answer: C
Rationale: The immune system actually is a collection of specialized white blood cells and lymphoid tissues that cooperate to protect a person from external invaders and the body's own altered cells. The function of these structures is assisted and supported by the activities of natural killer cells, antibodies, and nonantibody proteins such as cytokines and the complement system. Red blood cells and stem cells are not part of the immune system.
A client will be receiving a hepatitis B vaccination series prior to employment in a dialysis center. What type of immunity will this provide?
- A. Forced immunity
- B. Naturally acquired active immunity
- C. Passive immunity
- D. Artificially acquired active immunity
Correct Answer: D
Rationale: Artificially acquired immunity is obtained by receiving a killed or weakened microorganism or toxoid. Passive immunity develops when ready-made antibodies are given to a susceptible person. The antibodies provide immediate but short-lived protection from the invading antigen. Newborns receive passive immunity to some diseases for which their mothers have manufactured antibodies. Naturally acquired active immunity occurs as a direct result of infection by a specific microorganism. An example is the immunity to measles that develops after the initial infection. Not all invading microorganisms produce a response that gives lifelong immunity. There is not a type of immunity called forced immunity.