Nokea
The hormone that works with estrogen to prepare the endometrium for implantation of a fertilized egg is
- A. LH
- B. FSH
- C. ADH
- D. progesterone
Correct Answer: D
Rationale: Progesterone is the correct answer because it is the hormone that works with estrogen to prepare the endometrium for implantation of a fertilized egg. Progesterone helps thicken the endometrium, creating a favorable environment for implantation. LH and FSH are involved in ovulation and follicle development, not endometrial preparation. ADH is antidiuretic hormone, which regulates water balance in the body, not related to endometrial preparation.
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A client is undergoing sentinel lymph node mapping. A nurse explains that this new technique reduces the likelihood of which
- A. Lymphedema
- B. Excessive scarring
- C. Cellulitis
- D. None of the above
Correct Answer: A
Rationale: Sentinel lymph node mapping helps reduce the risk of lymphedema by limiting the number of lymph nodes removed.
We can state the following about the uterus:
- A. it is made up of corpus and cervix;
- B. the vagina is inserted on the cervix;
- C. the uterine cavity displays a mucous membrane that undergoes cyclical modifications;
- D. it has striated musculature, with longitudinal, radial and circular fibers;
Correct Answer: C
Rationale: Step 1: The uterine cavity displays a mucous membrane that undergoes cyclical modifications due to hormonal changes during the menstrual cycle.
Step 2: This mucous membrane is essential for embryo implantation and plays a crucial role in pregnancy.
Step 3: The cyclical modifications of the mucous membrane are necessary for the shedding of the endometrium during menstruation.
Summary: Choice C is correct because it accurately describes a key function of the uterus related to the menstrual cycle. Choices A, B, and D are incorrect as they do not address the specific function of the uterine cavity and its mucous membrane modifications.
The nurse correlates which factor to an increased risk of endometrial cancer in women with early menarche or late menopause?
- A. Total number of ovulatory cycles
- B. Less hormone stimulation
- C. Need for estrogen replacement in these patients
- D. Extended duration of the menstrual cycle in these patients
Correct Answer: A
Rationale: The correct answer is A: Total number of ovulatory cycles. Early menarche and late menopause lead to a longer reproductive period, resulting in more ovulatory cycles. Increased exposure to estrogen due to more ovulatory cycles is a risk factor for endometrial cancer. Choice B is incorrect as more hormone stimulation, not less, contributes to the risk. Choice C is irrelevant as estrogen replacement therapy is not mentioned in the question. Choice D is incorrect as the duration of the menstrual cycle is not directly linked to the increased risk of endometrial cancer in these women.
If a cell has 92 chromosomes at the beginning of mitosis, determine the number of chromatids at
- A. 23 chromatids
- B. 92 chromatids
- C. 46 chromatids
- D. 184 chromatids
Correct Answer: C
Rationale: The correct answer is C: 46 chromatids. At the beginning of mitosis, each chromosome consists of two sister chromatids. Since the cell has 92 chromosomes, the total number of chromatids will be 92 chromosomes x 2 chromatids per chromosome = 184 chromatids. However, this number represents the total number of chromatids, not the number at the beginning of mitosis. At the beginning of mitosis, the sister chromatids are still attached, so we need to divide the total number of chromatids by 2 to get the number at the beginning of mitosis, which is 184 chromatids / 2 = 92 chromatids. Therefore, the correct answer is 46 chromatids, as each chromosome consists of two chromatids at the beginning of mitosis. Choices A, B, and D are incorrect as they do not consider the concept of sister chromatids in chromosomes during mitosis.
Choose the CORRECT match. Animals Fertilization Embryonic development
- A. Dog Internal Oviparity
- B. Duck External Viviparity
- C. Frog External Oviparity
- D. Cat Internal Ovoviviparity
Correct Answer: C
Rationale: The correct match is C: Frog - External Oviparity. Frogs lay eggs externally, and their fertilization and embryonic development occur outside the female's body. This is characteristic of oviparous animals. The other choices are incorrect because:
A: Dog - Internal Oviparity, dogs give birth to live young and do not lay eggs.
B: Duck - External Viviparity, ducks also give birth to live young and do not lay eggs externally.
D: Cat - Internal Ovoviviparity, cats give birth to live young but retain eggs inside their body until they hatch.