Nokea
In embryology:
- A. Most defects occur with teratogens in the first 2 weeks post-conception
- B. The urachus becomes the median umbilical ligament
- C. The mesonephric duct becomes the male organs
- D. The thyroid develops from the floor of the primitive larynx
Correct Answer: B
Rationale: The urachus becomes the median umbilical ligament. Most defects occur after the first 2 weeks, and the thyroid develops from the floor of the pharynx.
You may also like to solve these questions
During a home visit, the nurse assesses the skin of a client with eczema who reports that an exacerbation of symptoms has occurred during the last week. Which information is most useful in determining the possible cause of the symptoms?
- A. An old friend with eczema came for a visit
- B. Recently received an influenza immunization
- C. A grandson and his new dog recently visited
- D. Corticosteroid cream was applied to eczema
Correct Answer: C
Rationale: Exposure to new allergens, such as a pet, can trigger eczema flare-ups.
Which client has the highest risk for developing skin cancer?
- A. A 16-year old dark-skinned female who tans in tanning beds once a week
- B. A 65 year-old fair-skinned male who is a construction worker
- C. A 25 year-old dark-skinned male whose mother had skin cancer
- D. A 70 year-old fair-skinned female who works as a secretary
Correct Answer: B
Rationale: Fair-skinned individuals with prolonged sun exposure, such as construction workers, are at higher risk for skin cancer.
Which physiological changes occur as a result of hypoxemia in congestive heart failure (CHF)?
- A. Polycythemia and clubbing
- B. Anemia and barrel chest
- C. Increased white blood cells and low platelets
- D. Elevated erythrocyte sedimentation rate and peripheral edema
Correct Answer: A
Rationale: Hypoxemia stimulates erythropoiesis, causing polycythemia, which along with chronic hypoxemia can lead to digital clubbing.
Regarding idiopathic thrombocytopenic purpura (ITP):
- A. The more severe the disease
- B. the faster is the recovery to therapy
- C. Alloimmunisation occurs due to fetomaternal incompatibility
- D. Splenomegaly is a recognised feature
Correct Answer: C
Rationale: ITP is characterized by low platelet counts due to immune-mediated destruction. Splenomegaly is a recognized feature but the other options are incorrect. Recovery is not necessarily faster with more severe disease alloimmunisation is not a feature of ITP and not all children with platelet counts below 50 000 require hospitalization. IV immunoglobulin is not indicated in all cases.
A nurse is preparing to administer an angiotensin-converting enzyme (ACE) inhibitor. Which drug should the nurse administer?
- A. Captopril (Capoten)
- B. Furosemide (Lasix)
- C. Spironolactone (Aldactone)
- D. Chlorothiazide (Diuril)
Correct Answer: A
Rationale: Captopril is an ACE inhibitor. Furosemide is a loop diuretic. Spironolactone blocks the action of aldosterone. Chlorothiazide works on the distal tubules.