A patient tells the nurse that he has been informed he has internal hemorrhoids and asks whether there are different types of hemorrhoids. What is the nurse’s most appropriate response?

Correct Answer: C

Rationale: Step-by-step rationale for why choice C is correct: 1. Internal hemorrhoids are located higher in the rectum, typically above the dentate line. 2. They are not usually palpable unless they are prolapsed or thrombosed. 3. This differentiates them from external hemorrhoids, which are located below the dentate line and are often palpable. 4. Choice C accurately describes the typical characteristics of internal hemorrhoids. 5. Choices A, B, and D provide inaccurate information regarding the location, appearance, and characteristics of internal hemorrhoids, making them incorrect.

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.

Correct Answer: C

Rationale: Ovoviviparity is a reproductive strategy where fertilized eggs develop within the female's body but are not nourished by the mother. Choice C is correct because birds lay fertilized eggs within a nest where they hatch, indicating the eggs were developed internally. Choice A is incorrect as honeybees do not exhibit ovoviviparity. Choice B is incorrect as sharks exhibit viviparity, where embryos develop inside the mother but are nourished directly. Choice D is incorrect as it describes placental nourishment in mammals, which is not characteristic of ovoviviparity.

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.

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.