Nokea
Also called the birth canal, this is a muscular passageway from the cervix to the outside of the female's body:
- A. Vagina
- B. Uterus
- C. Fallopian tube
- D. obstetrician
Correct Answer: A
Rationale: The correct answer is A: Vagina. The vagina is the muscular passageway from the cervix to the outside of the female's body, serving as the birth canal. It is where sexual intercourse occurs and where menstrual flow exits the body. The uterus (B) is the organ where a fertilized egg implants and develops into a fetus, not the birth canal. Fallopian tubes (C) are where fertilization of an egg typically occurs, not part of the birth canal. Obstetrician (D) is a medical professional specializing in childbirth and pregnancy, not a part of the female reproductive anatomy.
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Which cells in the seminiferous tubules progress through the first meiotic division?
- A. Sertoli cells
- B. Spermatogonia
- C. Spermatid
- D. primary spermatocyte
Correct Answer: D
Rationale: The correct answer is D: primary spermatocyte. Primary spermatocytes are the cells in the seminiferous tubules that progress through the first meiotic division. During this division, primary spermatocytes undergo DNA replication and then divide into two secondary spermatocytes. These secondary spermatocytes will then undergo the second meiotic division to produce haploid spermatids.
Explanation for why other choices are incorrect:
A: Sertoli cells are supporting cells in the seminiferous tubules but do not undergo meiotic divisions.
B: Spermatogonia are the undifferentiated germ cells that give rise to primary spermatocytes but do not progress through meiotic divisions.
C: Spermatids are the haploid cells produced after the two meiotic divisions, so they do not progress through the first meiotic division.
In summary, primary spermatocytes are the cells that go through the first meiotic division in the seminiferous tubules
During fetal development which cells give rise to primary oocytes?
- A. Spermatogonia
- B. Secondary oocytes
- C. Oogonia
- D. Granulosa cells
Correct Answer: C
Rationale: The correct answer is C: Oogonia. Oogonia are the cells that give rise to primary oocytes during fetal development. Oogonia undergo mitosis to produce primary oocytes, which then enter meiosis I to form secondary oocytes. Spermatogonia (A) are male germ cells that develop into sperm, not oocytes. Secondary oocytes (B) are formed from primary oocytes in the ovary after meiosis I completion. Granulosa cells (D) are somatic cells in the ovary that support oocyte development but do not give rise to oocytes themselves.
You are caring for a 21-year-old client who had a left orchiectomy for testicular cancer on the previous day. Which nursing activities associated with his care will be best to delegate to a new LPN you are orienting to the surgical unit?
- A. Answer the client's questions about the use of chemotherapy and radiation for testicular cancer.
- B. Administer narcotic analgesic medications to the client for pain.
- C. Teach the client how to perform testicular self-examination on the remaining testicle.
- D. Assess the client's knowledge level about the use of sperm banking.
Correct Answer: B
Rationale: Administering medications is within the scope of practice for an LPN.
Middle layer of uterus is called:
- A. Endometrium
- B. Ectometrium
- C. Myometrium
- D. Perimetrium.
Correct Answer: C
Rationale: The correct answer is C: Myometrium. The myometrium is the middle layer of the uterus composed of smooth muscle tissue responsible for uterine contractions during childbirth. The endometrium (A) is the innermost layer responsible for menstruation and implantation. Ectometrium (B) is not a correct term. Perimetrium (D) is the outermost layer of the uterus. Therefore, C is the correct choice as it accurately represents the middle layer of the uterus.
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.