Nokea
A woman who is 8 weeks pregnant is in the clinic for a checkup. The nurse reads on her chart that her cervix is softened and looks cyanotic. The nurse knows that the woman is exhibiting ________ sign and ________ sign.
- A. Tanner; Hegar
- B. Hegar; Goodell
- C. Chadwick; Hegar
- D. Goodell; Chadwick
Correct Answer: D
Rationale: The correct answer is D: Goodell; Chadwick. Goodell's sign refers to cervical softening, which is a common sign of pregnancy at 8 weeks. Chadwick's sign refers to the bluish discoloration of the cervix due to increased blood flow, also commonly seen at this stage. Tanner and Hegar signs are not relevant to the described scenario. Tanner's sign is related to breast development and Hegar's sign is related to softening of the isthmus of the uterus, not the cervix. Therefore, choices A, B, and C are incorrect.
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Antiviral agents that is/ are active against cytomegalovirus (CMV) include which of the following?
- A. Ganciclovir
- B. Foscarnet
- C. Acyclovir
- D. (a) and (b) are correct
Correct Answer: D
Rationale: The correct answer is D because both Ganciclovir and Foscarnet are active against cytomegalovirus (CMV). Ganciclovir works by inhibiting viral DNA polymerase, while Foscarnet inhibits viral DNA polymerase and reverse transcriptase. Acyclovir, on the other hand, is not effective against CMV as it primarily targets herpes simplex virus and varicella-zoster virus. Therefore, choices A and B are correct for CMV treatment, making option D the correct answer.
A function of the kidney is to
- A. produce angiotensin
- B. remove microorganisms from the blood
- C. remove aged blood from the blood
- D. regulate blood ionic composition
Correct Answer: D
Rationale: The correct answer is D: regulate blood ionic composition. The kidneys help maintain the body's electrolyte balance by regulating the levels of ions such as sodium, potassium, and calcium in the blood. This is crucial for proper nerve and muscle function, pH balance, and overall homeostasis.
Explanation for why the other choices are incorrect:
A: The production of angiotensin is primarily done by the liver and lungs, not the kidneys.
B: While the kidneys help filter out waste and toxins, they do not specifically target microorganisms in the blood.
C: Removing aged blood from the blood is not a function of the kidneys; this task is mainly carried out by the spleen and liver.
In summary, the kidney's main function is to regulate blood ionic composition to maintain overall bodily functions, making choice D the correct answer.
Which of the following statements about part of a nephron? antidiuretic hormone (ADH) is incorrect?
- A. renal pelvis
- B. ADH regulates the amount of water
- C. distal tubule reabsorbed by the kidneys
- D. collecting duct
Correct Answer:
Rationale: The correct answer is A: renal pelvis. The renal pelvis is not directly related to the action of antidiuretic hormone (ADH) in the nephron. ADH regulates water reabsorption in the collecting duct of the nephron to maintain water balance in the body. Choices B, C, and D are incorrect because they are all associated with the function of ADH in the nephron. ADH regulates the amount of water reabsorbed in the distal tubule and collecting duct, not the renal pelvis.
The drug of choice for monilial diarrhea is: *
- A. Amphothericin B
- B. Nystatin
- C. Ketoconazole
- D. Itraconazole
Correct Answer: B
Rationale: The correct answer is B: Nystatin. Nystatin is the drug of choice for monilial diarrhea because it is an antifungal medication specifically effective against Candida species causing the infection in the gastrointestinal tract. It is not absorbed systemically, making it suitable for gastrointestinal infections. Amphothericin B (A) is used for systemic fungal infections. Ketoconazole (C) and Itraconazole (D) are not typically used for gastrointestinal Candida infections.
In the presence of antidiuretic hormone (ADH), or vasopressin, water is mostly reabsorbed in the ___________ of the nephron.
- A. Proximal convoluted tubule
- B. Loop of henle
- C. Collecting duct
- D. Distal convoluted tubule
Correct Answer: A
Rationale: The correct answer is A: Proximal convoluted tubule. ADH acts on the collecting duct and distal convoluted tubule to increase water reabsorption. However, the majority of water reabsorption occurs in the proximal convoluted tubule due to its high permeability to water. This segment reabsorbs about 65% of filtered water, mainly through osmosis. The loop of Henle plays a crucial role in concentrating urine, but it is not the main site of water reabsorption. The collecting duct responds to ADH but reabsorbs a smaller fraction of filtered water compared to the proximal tubule. The distal convoluted tubule is primarily involved in electrolyte reabsorption rather than water reabsorption.