Nokea
The clusters of specific glands that cycle are known as ________. produce milk when a woman is
- A. the menstrual phase lactating are called _______.
- B. the secretory phase
- C. lactiferous ducts
- D. menses
Correct Answer: B
Rationale: The correct answer is B: the secretory phase. During the secretory phase of the menstrual cycle, the glands in the breast tissue prepare for potential milk production. This phase occurs after ovulation when the body is getting ready for a possible pregnancy. The other choices are incorrect because:
A: the menstrual phase refers to the shedding of the uterine lining, not the breast glands.
C: lactiferous ducts are the tubes that carry milk from the glands to the nipple, not the clusters of glands themselves.
D: menses refers to the menstrual bleeding period, not the phase in which the breast glands are active for milk production.
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A baby is born with a penis, a scrotum with no testes, no vagina, and XX chromosomes. This condition is referred to as hermaphroditism. Which of the following could cause this abnormality?
- A. Abnormally high levels of human chorionic gonadotropin production by the trophoblast cells
- B. Abnormally low rates of estrogen production by the placenta
- C. Abnormally high levels of luteinizing hormone in the maternal blood
- D. Abnormally high levels of testosterone in the maternal blood
Correct Answer: D
Rationale: The correct answer is D: Abnormally high levels of testosterone in the maternal blood. This can cause virilization of the female fetus, leading to the development of male external genitalia. Testosterone exposure during fetal development can result in the formation of a penis and scrotum without testes in a genetic female (XX).
Rationale:
1. Testosterone is responsible for the development of male external genitalia.
2. XX chromosomes indicate a genetic female.
3. Lack of testes indicates incomplete masculinization.
4. High levels of testosterone can override the default female development pattern.
Other choices are incorrect because:
A: Human chorionic gonadotropin does not directly affect fetal genital development.
B: Estrogen is not responsible for male genital development.
C: Luteinizing hormone does not directly influence the development of external genitalia in the fetus.
Which of the following is NOT a part of
- A. labor a male's testis?
- B. menarche
- C. seminiferous tubule
- D. menstruation
Correct Answer: B
Rationale: The correct answer is B: menarche. Menarche refers to the onset of a female's first menstrual period, not related to male reproductive anatomy. Choice A, labor a male's testis, involves the process of childbirth and is not related to male reproductive anatomy. Choice C, seminiferous tubule, is a part of the male reproductive system where sperm is produced. Choice D, menstruation, is the monthly shedding of the uterine lining in females, not related to male reproductive anatomy. Therefore, menarche is the only choice that does not pertain to male reproductive anatomy.
Which of the following sets of tissues are all part of a developing follicle.
- A. granulosa cells, theca, corpus luteum
- B. theca, acrosome, antrum
- C. oocyte, corpus luteum, granulosa cells
- D. . zona pellucida, cumulus oophorous, theca
Correct Answer: D
Rationale: The correct answer is D because all the tissues mentioned (zona pellucida, cumulus oophorous, theca) are indeed part of a developing follicle. The zona pellucida is the glycoprotein layer surrounding the oocyte, the cumulus oophorous is a cluster of granulosa cells surrounding the oocyte, and the theca is a layer of connective tissue surrounding the follicle.
Choice A is incorrect because the corpus luteum is not part of a developing follicle. Choice B is incorrect because the acrosome is a structure in sperm, not the follicle. Choice C is incorrect because the corpus luteum is not part of a developing follicle, and the oocyte is already present within the follicle but is not considered a part of it.
The male sex of the child involves the following during fecundation:
- A. the spermatozoon should contain the X sex chromosome;
- B. the spermatozoon should contain the Y sex chromosome;
- C. the ovule should contain the contain the Y sex chromosome;
- D. the spermatozoon should contain the Y sex chromosome and the ovule should contain the contain the X sex chromosome;
Correct Answer: B
Rationale: Step 1: At fertilization, the sperm contributes either an X or Y sex chromosome.
Step 2: The ovum always contributes an X sex chromosome.
Step 3: If the sperm carries the Y chromosome, the resulting child will be male.
Therefore, the correct choice is B.
Summary:
A: Incorrect. If the sperm contains the X chromosome, the child will be female.
C: Incorrect. Ovule always contains an X chromosome.
D: Incorrect. This choice combines correct and incorrect information, as the sperm must contain the Y chromosome for a male child.
Which of the following suggestions should a nurse give breast-feeding mothers to prevent or eliminate mastitis and breast abscess?
- A. Offer the opposite breast at each feeding to their infants.
- B. Minimize frequent nursing of the infants.
- C. Avoid breast-feeding.
- D. Avoid bathing or showering regularly.
Correct Answer: A
Rationale: Alternating breasts during feedings helps prevent blockages and infections.