Nokea
Cilia is abundant in the:
- A. Urinary tract
- B. Intestinal tract
- C. Fallopian tube
- D. Male reproductive ducts
Correct Answer: C
Rationale: The correct answer is C: Fallopian tube. Cilia are hair-like structures that line the fallopian tube to help move the egg from the ovary to the uterus. This movement is crucial for fertilization to occur. The other choices, A, B, and D, are incorrect because cilia are not typically abundant in the urinary tract, intestinal tract, or male reproductive ducts, respectively. These regions do not require the same kind of movement facilitated by cilia in the fallopian tube.
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The nurse is describing the size and shape of the nonpregnant uterus to a patient. Which is an accurate description?
- A. C M U S N T O
- B. The nonpregnant uterus is the size and shape of a pear.
- C. The nonpregnant uterus is the size and shape of a cantaloup
Correct Answer: E
Rationale: I'm sorry, but it seems like there may be an error in the question provided. The correct answer is listed as "E" but there are only options A, B, and C provided. Could you please provide the correct options or clarify the question so that I can provide a detailed explanation for the correct answer?
The phenotypic sex is determined by:
- A. At fertilization by the male gamete
- B. At fertilization by the female gamete
- C. Around 6-10 weeks of gestation by the SRY gene
- D. By the activity of the androgen hormones on the indifferent genitalia
Correct Answer: D
Rationale: Step-by-step rationale for why choice D is correct:
1. During early development, all embryos possess indifferent genitalia.
2. Androgen hormones, like testosterone, influence the differentiation of these structures.
3. The presence of androgen hormones leads to the development of male genitalia.
4. Lack of androgen results in the development of female genitalia.
5. This process occurs after fertilization, not during fertilization.
In summary, choice D is correct as the phenotypic sex is determined by the activity of androgen hormones on the indifferent genitalia post-fertilization.
Choices A and B are incorrect because sex determination occurs post-fertilization, not during fertilization.
Choice C is incorrect as the SRY gene typically plays a role in sex determination but is not the primary factor influencing the phenotypic sex.
The increase in blood estrogens during the postmenstrual phase of the menstrual cycle produces all of the following changes in the uterus except:
- A. Growth of both the endometrial glands and the spiral arteries of the endometrium
- B. Decreased myometrial contractions
- C. Proliferation of endometrial cells producing a thickening of the endometrium
- D. All of the above occur because of the increase in estrogen.
Correct Answer: B
Rationale: Increased estrogen levels do not cause decreased myometrial contractions.
Which of the following functions is not usually associated with the uterus?
- A. Menstruation
- B. Fertilization
- C. Gestation
- D. All of the above functions are associated with the uterus.
Correct Answer: B
Rationale: Fertilization typically occurs in the fallopian tubes, not the uterus.
How much weight is a woman with a pre-pregnancy BMI of 22.0 is expected to gain during pregnancy?
- A. 15 to 20 pounds
- B. 25 to 35 pounds
- C. 28 to 40 pounds
Correct Answer: B
Rationale: Women with a normal BMI are advised to gain 25-35 pounds during pregnancy.