Nokea
The average menstrual cycle is
- A. 14 days
- B. 18 days
- C. 24 days
- D. 28 days
Correct Answer: D
Rationale: The correct answer is D (28 days) as it is the average length of a menstrual cycle, which is typically counted from the first day of one period to the first day of the next. The menstrual cycle is controlled by hormonal changes and the average duration is around 28 days. This length allows for the proper preparation and shedding of the uterine lining. Choices A, B, and C are incorrect as they do not align with the typical length of a menstrual cycle, which is around 28 days.
You may also like to solve these questions
Which of these is not produced by the placenta?
- A. estrogen
- B. relaxin
- C. progesterone
- D. lactogen
Correct Answer: B
Rationale: The correct answer is B: relaxin. The placenta produces estrogen, progesterone, and lactogen to support pregnancy. Relaxin is primarily produced by the corpus luteum and later by the placenta. However, it is not exclusively produced by the placenta, making it the correct choice. Estrogen is crucial for fetal development and maintaining pregnancy. Progesterone helps in preparing the uterus for implantation and supporting the pregnancy. Lactogen (human placental lactogen) plays a role in regulating maternal metabolism and fetal growth.
Which of the following describes oviparity?
- A. Offspring are fully developed at birth.
- B. Young mammals obtain nourishment from mother's placenta
- C. Embryos that continue developing outside their mother's body.
- D. Frogs that hatch from shell-covered fertilized eggs within female's body.
Correct Answer: D
Rationale: Oviparity refers to the reproductive mode where organisms lay eggs that hatch outside the body. Choice D is correct as it describes frogs hatching from shell-covered fertilized eggs within the female's body. This is because frogs lay eggs externally after fertilization, and the eggs hatch into tadpoles outside the female's body. Choices A and B are incorrect as they describe viviparity, where offspring are fully developed at birth and young mammals obtain nourishment from the mother's placenta, respectively. Choice C is incorrect as it describes ovoviviparity, where embryos develop inside eggs within the mother's body but are born live.
A nurse is working with a client who has undergone chemotherapy for breast cancer. The client is experiencing body image disturbances. Which of the following symptoms would contribute to this psychosocial issue?
- A. Fatigue
- B. Vomiting
- C. Hair loss
- D. Nausea
Correct Answer: C
Rationale: Hair loss is a visible side effect of chemotherapy that can significantly impact body image.
A patient complains of dysuria, yellow-green vaginal discharge, and vulvar itching. The nurse suspects which sexually transmitted disease?
- A. Syphilis
- B. Gonorrhea
- C. Genital warts
- D. Chlamydia
Correct Answer: B
Rationale: The correct answer is B: Gonorrhea. Dysuria, yellow-green discharge, and vulvar itching are classic symptoms of gonorrhea. The causative agent, Neisseria gonorrhoeae, infects the genital tract. Syphilis (A) presents with painless sores, not discharge. Genital warts (C) are caused by human papillomavirus and present as warts, not discharge. Chlamydia (D) can cause similar symptoms, but the characteristic discharge in this case points more towards gonorrhea.
Prophase I of the spermatocyte phase lasts approximately:
- A. 2 hours
- B. 24 hours
- C. 2 days
- D. 16 days
Correct Answer: D
Rationale: The correct answer is D (16 days) because prophase I of spermatocyte phase involves complex processes like chromosome pairing and recombination, which take time. It is a crucial stage in sperm formation. Choices A, B, and C are incorrect as they underestimate the duration required for these intricate cellular events to occur. A shorter timeframe would not allow for proper genetic exchange and segregation, essential for genetic diversity in offspring. Thus, a longer duration like 16 days is necessary for the completion of prophase I in spermatocyte phase.