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Which of the following is/are an example(s) of asexual reproduction?
- A. Fission.
- B. Fragmentation.
- C. Budding.
- D. All of the abov
Correct Answer: D
Rationale: The correct answer is D: All of the above. Asexual reproduction involves the production of offspring from a single parent without the involvement of gametes or fertilization.
- Fission: Organism splits into two or more parts, each regenerating into a new individual.
- Fragmentation: Parent organism breaks into fragments, with each fragment developing into a new individual.
- Budding: New individuals develop as outgrowths or buds from the parent organism.
All these processes result in genetically identical offspring, making them examples of asexual reproduction.
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Which of the following statements is incorrect?
- A. both luteinising hormone and follicle stimulating hormone are secreted by the hypothalamus
- B. testosterone stimulates sertoli cells
- C. luteinising hormone stimulates Leydig cells to make testosterone
- D. sertoli cells secrete inhibin
Correct Answer: A
Rationale: The correct answer is A because luteinising hormone (LH) and follicle stimulating hormone (FSH) are not secreted by the hypothalamus, but by the anterior pituitary gland. LH stimulates Leydig cells to produce testosterone, not the hypothalamus. Testosterone stimulates sertoli cells, not the other way around. Inhibin is indeed secreted by sertoli cells, but it does not relate to the incorrect statement regarding the origin of LH and FSH.
The roles of the testicle are:
- A. endocrine gland (to produce sperm cells);
- B. exocrine gland (to secrete androgenic hormones);
- C. spermatogenesis;
- D. generation of semen;
Correct Answer: C
Rationale: Rationale for correct answer (C): The main function of the testicles is spermatogenesis, which is the process of producing sperm cells. This is a crucial role in male reproductive system. Spermatogenesis occurs in the seminiferous tubules of the testes. Other functions like producing androgenic hormones (choice B) are mainly carried out by the Leydig cells in the testes, not the testicles themselves. While the testicles do play a role in semen production (choice D), this is not their primary function. Therefore, the correct answer is C as it directly relates to the main purpose of the testicles in the male reproductive system.
Vaginal candidacies are suspected in a young woman who complains of severe vaginal itching. Which of the following nursing actions should be performed first when assisting in the collection of a vaginal smear for microscopic examination?
- A. Inspect the external genitalia
- B. Don gloves
- C. Wash hands
- D. Label the specimen
Correct Answer: B
Rationale: Donning gloves is the first step to ensure hygiene and prevent contamination during specimen collection.
Which of the following reasons should a nurse provide a client when asked about the purpose of a Papanicolaou test?
- A. It is used to detect early breast cancer.
- B. It is used to detect early cancer of the Cervix.
- C. It is used to detect the fertility status of the woman.
- D. It is used to detect early stages of an STD.
Correct Answer: B
Rationale: The Pap test is specifically designed to detect early cervical cancer.
The tiny female sex cell that unites with male sperm to form a zygote or fertilized egg.
- A. Ovary
- B. Ovum
- C. Gonad
- D. Gamets
Correct Answer: B
Rationale: The correct answer is B: Ovum. The ovum is the mature female sex cell that unites with a male sperm during fertilization to form a zygote. Ovary (A) is the organ that produces eggs but is not the actual female sex cell. Gonad (C) is a general term for reproductive organs, not the specific female sex cell. Gametes (D) refer to both male and female sex cells, so it is a broad term and not the specific female sex cell. The ovum is the only choice that accurately represents the tiny female sex cell involved in fertilization.