Which treatment option minimizes the development of lymphedema in the surgical management of a patient with breast cancer?

Correct Answer: C

Rationale: The correct answer is C: Sentinel lymph node mapping. This procedure helps identify and remove only the lymph nodes most likely to contain cancer cells, reducing the risk of lymphedema. A: Radical mastectomy is an extensive surgery that may increase the risk of lymphedema. B: Radiation therapy can also contribute to lymphedema. D: Ultrasound is not a treatment option for minimizing lymphedema in breast cancer surgery. Therefore, C is the best choice for minimizing the development of lymphedema.

Correct Answer: B

Rationale: The correct answer is B: Prepare to receive and nourish a fertilized ovum (blastocyst). The primary function of the endometrial layer of the uterus is to provide a suitable environment for implantation and nourishment of a fertilized egg. During the menstrual cycle, the endometrial layer thickens in preparation for potential pregnancy. If fertilization occurs, the blastocyst implants into the endometrium for further development. Choices A, C, and D are incorrect as the endometrial layer does not primarily function to increase in density during each cycle, produce ovulation-regulating hormones, or maintain pregnancy, respectively.

Correct Answer: B

Rationale: The primary function of the corpus luteum is to produce progesterone and estrogen. Progesterone supports the maintenance of the endometrium for potential implantation of a fertilized egg. Estrogen also plays a role in the menstrual cycle. The other choices are incorrect because: A: The ovum is produced in the ovary, not the corpus luteum. C: The endometrial growth is primarily influenced by estrogen and progesterone, not the corpus luteum. D: The maturation of the next follicle is regulated by hormones like follicle-stimulating hormone (FSH) and luteinizing hormone (LH), not the corpus luteum.

Correct Answer: A

Rationale: The correct answer is A: Prostaglandins and oxytocin. Prostaglandins and oxytocin are the primary hormones that stimulate contractions in the myometrium of the uterus during labor. Progesterone and estrogen (choice B) are involved in the menstrual cycle and maintaining pregnancy, not in uterine contractions. Oxytocin, relaxin, and prostaglandin E (choice C) have roles in labor but are not the primary hormones that directly act on the myometrium. Progesterone and testosterone (choice D) do not directly influence uterine contractions.

Correct Answer: C

Rationale: The correct answer is C. Given the young woman's delayed menarche despite signs of secondary sexual development, further assessment is warranted to rule out any underlying medical conditions affecting her menstrual cycle. This approach ensures appropriate evaluation and potential intervention if necessary. A: Incorrect. While reassuring, it overlooks the need for a thorough assessment in this scenario. B: Incorrect. Prematurely alarming the individual about future fertility issues without proper evaluation is unwarranted. D: Incorrect. While some young women may be "late bloomers," it is essential to verify this through a professional assessment to rule out any underlying issues.