In DiGeorge disease, what is the cause? (Select all that apply)
Lack of development of the thymus
B cells cannot mature
T cells cannot mature
Lack of development of the bursa
Correct Answer : A,C
Choice A reason: DiGeorge disease involves thymic hypoplasia or aplasia, impairing T-cell development. This is a primary cause, leading to immune deficiency, making it a correct choice for the condition’s etiology.
Choice B reason: B-cell maturation is generally preserved in DiGeorge disease, as it primarily affects T-cells due to thymic defects. T-cell issues are central, so this is incorrect for the cause.
Choice C reason: T cells cannot mature in DiGeorge disease due to thymic underdevelopment, causing severe immunodeficiency. This is a core feature of the syndrome, making it a correct choice for the cause.
Choice D reason: Humans lack a bursa; B-cell maturation occurs in bone marrow. DiGeorge affects the thymus and T-cells, not a nonexistent bursa, so this is incorrect for the cause.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Absence seizures involve brief staring spells, not continuous tonic-clonic movements. The patient’s prolonged, unresponsive seizure activity indicates status epilepticus, so this is incorrect for the seizure type.
Choice B reason: Status epilepticus is continuous or recurrent seizures lasting over 5 minutes, often tonic-clonic, with unresponsiveness, tachycardia, and hypertension. This matches the patient’s presentation, making it the correct type.
Choice C reason: Myoclonic seizures cause brief muscle jerks, not prolonged tonic-clonic activity. Status epilepticus describes the continuous seizure state, so this is incorrect for the observed seizure.
Choice D reason: Tonic-clonic seizure is a single event, but continuous activity suggests status epilepticus. The prolonged duration and unresponsiveness point to status, so this is incorrect.
Correct Answer is C
Explanation
Choice A reason: The egg would not stay the same size, as ocean water is hypertonic (higher salinity) compared to Lake Michigan’s fresh water. Osmotic differences drive water movement into the egg, causing swelling, making this an incorrect prediction.
Choice B reason: “None of the above” is incorrect, as the egg will swell due to osmosis. Fresh water in Lake Michigan has lower solute concentration than the egg’s cytoplasm, causing water influx, making this an invalid choice.
Choice C reason: The sea star egg will swell in Lake Michigan’s fresh water, which is hypotonic to the egg’s hypertonic cytoplasm. Water moves into the egg via osmosis, increasing its volume, making this the correct prediction for the egg’s response.
Choice D reason: The egg would shrink in a hypertonic environment, like concentrated saltwater, not fresh water. Lake Michigan’s hypotonic fresh water causes water influx, not loss, making shrinking an incorrect outcome for the egg.
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
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.