Nokea
The corpus luteum secretes whereas oogenesis will produce ___
- A. FSH. ova/ ovum.
- B. LH.
- C. 2; 2
- D. prolactin.
Correct Answer: A
Rationale: The correct answer is A because the corpus luteum secretes progesterone, not FSH. Oogenesis produces ova/ovum, not FSH, LH, or prolactin. FSH and LH are hormones produced by the pituitary gland to regulate the menstrual cycle, not by the corpus luteum or involved in ova production. Prolactin is a hormone involved in milk production, not in oogenesis or corpus luteum function. Therefore, A is correct as it correctly identifies the function of the corpus luteum and the product of oogenesis.
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When a nurse is educating a group of women about the risks of breast cancer, she includes which of the following common risk factor?
- A. Older than 30 years of age
- B. Family history of breast cancer
- C. African-American heritage
- D. Breast tenderness, without any sensation
Correct Answer: B
Rationale: Family history is a well-established risk factor for breast cancer.
The evolutionary stages of the ovarian follicles are:
- A. secondary;
- B. tertiary (de Graaf);
- C. primordial;
- D. evolutionary;
Correct Answer: C
Rationale: The correct answer is C: primordial. Ovarian follicles go through several stages of development. Primordial follicles are the earliest stage, containing primary oocytes surrounded by a single layer of squamous cells. This stage represents the resting pool of follicles. Secondary follicles come next, with primary oocytes surrounded by multiple layers of granulosa cells. Tertiary (de Graaf) follicles are the most advanced stage, containing a fluid-filled antrum and a mature oocyte. Evolutionary is not a recognized stage in ovarian follicle development. Secondary is incorrect as it comes after primordial, and tertiary is incorrect as it is not the earliest stage.
Where do sperm cells attain fertilization competence and motility?
- A. rete testis
- B. epididymis
- C. vas deferens
- D. seminiferous tubule
Correct Answer: B
Rationale: The correct answer is B: epididymis. Sperm cells attain fertilization competence and motility in the epididymis. Here's the rationale:
1. Sperm cells are produced in the seminiferous tubules of the testes.
2. They then move to the epididymis for maturation, where they gain motility and the ability to fertilize an egg.
3. The epididymis provides the ideal environment for sperm to undergo final maturation processes.
4. The rete testis is a network of tubules where sperm are transported from the seminiferous tubules, not where they gain fertilization competence.
5. The vas deferens is a duct that carries sperm from the epididymis to the urethra, not where sperm attain fertilization competence.
Days 6-14 of the uterine (menstrual)
- A. perineum cycle are known as the ________
- B. mons pubis phas
- C. This phase concludes with
- D. vulva ovulation.
Correct Answer: D
Rationale: The correct answer is D because days 6-14 of the uterine menstrual cycle correspond to the ovulation phase, where an egg is released from the ovary. This is a critical period for fertility. Choice A is incorrect as the perineum refers to the area between the anus and genitals, not a specific phase of the menstrual cycle. Choice B is incorrect as the mons pubis is a fatty tissue overlying the pubic bone, not a phase of the menstrual cycle. Choice C is incorrect as it is incomplete and lacks relevance to the menstrual cycle.
Delayed breathing at birth is a common danger faced by newborn infants. What is a frequent cause of delayed breathing?
- A. Fetal hypoxia during the birth process
- B. Maternal hypoxia during the birth process
- C. Fetal hypercapnia
- D. Maternal hypercapnia
Correct Answer: A
Rationale: The correct answer is A: Fetal hypoxia during the birth process. Fetal hypoxia, which is a lack of oxygen to the fetus during birth, can lead to delayed breathing in newborn infants. This lack of oxygen can result from various factors such as umbilical cord compression or placental insufficiency. Maternal hypoxia (choice B) and hypercapnia (choices C and D) may affect the fetus indirectly but are not direct causes of delayed breathing in newborns. Therefore, the correct choice is A, as it directly addresses the specific cause of delayed breathing in newborn infants.