Nokea
Spermatogenesis is a function of the _____.
- A. tunica albuginea
- B. rete testis
- C. seminiferous tubule
- D. seminal vesicle
Correct Answer: C
Rationale: The correct answer is C: seminiferous tubule. Spermatogenesis is the process of sperm production and occurs within the seminiferous tubules of the testes. These tubules contain specialized cells called germ cells that undergo meiosis to produce sperm. The tunica albuginea is a fibrous layer surrounding the testes, the rete testis is a network of tubules where sperm is transported, and the seminal vesicle is a gland that produces seminal fluid, not involved in sperm production. Therefore, the seminiferous tubule is the correct choice for spermatogenesis.
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The primary spermatocytes:
- A. are formed by spermatogonia mitosis;
- B. have a complete number of chromosomes;
- C. generate secondary spermatocytes;
- D. are diploid cells;
Correct Answer: D
Rationale: The correct answer is D because primary spermatocytes are diploid cells, containing a complete set of chromosomes (46 in humans). They are formed by spermatogonia through a process called meiosis. During meiosis, the primary spermatocytes undergo two divisions to generate haploid secondary spermatocytes with half the number of chromosomes. Choices A and C are incorrect because primary spermatocytes are formed by spermatogonia undergoing meiosis, not mitosis, and they generate secondary spermatocytes, not the other way around. Choice B is incorrect because primary spermatocytes are diploid, not haploid.
Sponges reproduce through which form of asexual reproduction?
- A. Fission.
- B. Budding.
- C. Fragmentation.
- D. Parthenogenesis.
Correct Answer: B
Rationale: The correct answer is B: Budding. In budding, a new organism develops as an outgrowth or bud on the parent organism. This process results in the formation of a genetically identical offspring. Sponges reproduce asexually through budding by forming small growths, which eventually detach and grow into new individuals. Fission (A) involves the splitting of an organism into two separate organisms, which is not how sponges reproduce. Fragmentation (C) is the breaking of the parent organism into fragments, with each fragment developing into a new individual, but this is not how sponges reproduce asexually. Parthenogenesis (D) is a form of asexual reproduction in which an unfertilized egg develops into a new individual, which is not the method used by sponges.
Lips of the vagina is termed as
- A. Labial
- B. Labia
- C. Labrum
- D. Labor
Correct Answer: B
Rationale: The correct answer is B: Labia. The term "labia" refers to the lips of the vagina. It is the plural form of "labium." "Labial" (A) refers to anything related to the lips, "Labrum" (C) refers to a rim or edge, and "Labor" (D) refers to the process of childbirth. Therefore, B is correct as it specifically refers to the structure being described.
The nurse is providing teaching by telephone to a patient who is scheduled for a pelvic examination and Pap test next week. The nurse instructs the patient that she should
- A. not have sexual intercourse the day before the Pap test.
- B. shower, but not take a tub bath, before the examination.
- C. avoid douching for at least 24 hours before the examination.
- D. schedule to have the Pap test just after her menstrual period
Correct Answer: C
Rationale: The correct answer is C. Douching can alter the vaginal pH and flora, affecting the accuracy of Pap test results. By avoiding douching for at least 24 hours before the exam, the patient ensures more accurate results.
A: Not having sexual intercourse the day before the Pap test is not necessary for test accuracy.
B: Showering is recommended for hygiene but taking a tub bath does not impact the test.
D: Scheduling the test just after the menstrual period may be more comfortable for the patient, but it does not affect the accuracy of the test.
_____________________ is a vascular organ that is formed within the uterine wall
- A. Amnion
- B. Chorion
- C. Placenta
- D. Endometrium
Correct Answer: C
Rationale: The correct answer is C: Placenta. The placenta is a vascular organ that develops within the uterine wall during pregnancy. It serves as a connection between the mother and fetus for nutrient and waste exchange. The amnion (A) and chorion (B) are fetal membranes, not vascular organs, and the endometrium (D) is the inner lining of the uterus where the placenta attaches.