ATI RN
Biology Human Reproductive System Questions
Question 1 of 5
If a cell has 92 chromosomes at the beginning of mitosis, determine the number of chromatids at
Correct Answer: C
Rationale: The correct answer is C: 46 chromatids. At the beginning of mitosis, each chromosome consists of two sister chromatids. Since the cell has 92 chromosomes, the total number of chromatids will be 92 chromosomes x 2 chromatids per chromosome = 184 chromatids. However, this number represents the total number of chromatids, not the number at the beginning of mitosis. At the beginning of mitosis, the sister chromatids are still attached, so we need to divide the total number of chromatids by 2 to get the number at the beginning of mitosis, which is 184 chromatids / 2 = 92 chromatids. Therefore, the correct answer is 46 chromatids, as each chromosome consists of two chromatids at the beginning of mitosis. Choices A, B, and D are incorrect as they do not consider the concept of sister chromatids in chromosomes during mitosis.
Question 2 of 5
Choose the CORRECT match. Animals Fertilization Embryonic development
Correct Answer: C
Rationale: The correct match is C: Frog - External Oviparity. Frogs lay eggs externally, and their fertilization and embryonic development occur outside the female's body. This is characteristic of oviparous animals. The other choices are incorrect because: A: Dog - Internal Oviparity, dogs give birth to live young and do not lay eggs. B: Duck - External Viviparity, ducks also give birth to live young and do not lay eggs externally. D: Cat - Internal Ovoviviparity, cats give birth to live young but retain eggs inside their body until they hatch.
Question 3 of 5
Foetal portion of placenta includes
Correct Answer: B
Rationale: The correct answer is B: Chorion frondosum. The foetal portion of the placenta is formed by the chorion frondosum, which consists of the chorionic villi that develop from the trophoblast. These villi are involved in the exchange of nutrients and waste products between the mother and the foetus. A: Decidua parietalis is the maternal portion of the placenta, not the foetal portion. C: Decidua basalis is also part of the maternal portion, not the foetal portion. D: Anchoring villi are structures that help anchor the placenta to the uterine wall, but they are not specific to the foetal portion. In summary, the correct answer is B because the chorion frondosum is specifically responsible for the foetal part of the placenta, while the other choices refer to maternal components or structures not directly related to the foetal portion.
Question 4 of 5
A 67-year-old male client had serum laboratory tests performed during his annual examination. The nurse reviews his results, as
Correct Answer: D
Rationale: The correct answer is D. The nurse should communicate that the results were normal because the specific antigen and prolactin levels fall within the normal range for a 67-year-old male. Specific antigen levels around 10 ng/mL are typical for this age group, and prolactin levels of 5 ng/mL are also within normal limits. Option A is not necessary as the results are normal. Option B is incorrect as galactorrhea is not indicated by the lab results. Option C is also incorrect as there is no indication of a testicular tumor based on the lab values. Therefore, the best course of action is to inform the client that the results are normal.
Question 5 of 5
Where does the epididymis direct sperm cells into?
Correct Answer: B
Rationale: The epididymis directs sperm cells into the vas deferens. Sperm mature in the epididymis and are stored there until ejaculation. The vas deferens then carries the mature sperm from the epididymis to the urethra for ejaculation. The other choices are incorrect because the vas efferens carries sperm from the rete testis to the epididymis, the rete testis is a network of tubules where sperm is collected from the seminiferous tubules, and the prostate gland secretes fluids that contribute to semen but does not direct sperm flow.