Nokea
The fecundated spermatozoon contains:
- A. 11 pairs of somatic chromosomes;
- B. 22 somatic chromosomes ;
- C. only the X sex chromosome;
- D. the X or Y sex chromosome
Correct Answer: D
Rationale: The correct answer is D because the fecundated spermatozoon can contain either the X or Y sex chromosome, determining the genetic sex of the offspring. Spermatozoa are haploid cells, meaning they contain only one set of chromosomes. During fertilization, the spermatozoon fuses with the ovum, which also contains a single set of chromosomes, resulting in a diploid zygote with a complete set of chromosomes. Choices A and B are incorrect as somatic chromosomes refer to the non-reproductive cells in the body, not the chromosomes found in gametes. Choice C is incorrect because the spermatozoon can carry either the X or Y sex chromosome, not exclusively the X chromosome.
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During a physical examination of the male reproductive system, how does the nurse assist the examiner to gather clues about the density of scrotal tissue?
- A. Through a digital rectal examination
- B. By externally inspecting the size of the scrotum
- C. Through transillumination
- D. Through a scrotal radiography
Correct Answer: C
Rationale: Transillumination helps assess the density and presence of fluid in the scrotum.
During a history, a patient reports rectal bleeding, a warning sign of colorectal cancer. The nurse correlates which clinical finding with colorectal cancer?
- A. Thick, blood-tinged mucus within the rectum
- B. A pus-filled cavity in the anorectal area
- C. An irregular mass with raised edges on the rectal wall
- D. A small, smooth nodule protruding from the rectum
Correct Answer: C
Rationale: The correct answer is C because an irregular mass with raised edges on the rectal wall is a common clinical finding associated with colorectal cancer. This mass could be a tumor or polyp, which can lead to rectal bleeding. Option A is incorrect because thick, blood-tinged mucus is more commonly associated with inflammatory conditions. Option B is incorrect as a pus-filled cavity suggests an abscess or infection, not colorectal cancer. Option D is incorrect because a small, smooth nodule is more indicative of hemorrhoids rather than colorectal cancer.
Hair like process on the sperm cell that makes it motile or moveable is
- A. Cilia
- B. Flagella
- C. Pseudopodia
- D. Dendritic processes
Correct Answer: B
Rationale: The correct answer is B: Flagella. Flagella are whip-like structures that provide motility to sperm cells. They enable the sperm cell to move towards the egg for fertilization. Cilia (choice A) are shorter hair-like structures involved in movement but are not found on sperm cells. Pseudopodia (choice C) are temporary projections used for cell movement in some organisms, not sperm cells. Dendritic processes (choice D) refer to branching extensions of nerve cells, not involved in sperm motility. Therefore, flagella is the most appropriate choice for the hair-like process on the sperm cell that makes it motile.
Uterine tubes are otherwise called as
- A. Vas deferens
- B. Epididymis
- C. Fallopian tubes
- D. Vagina
Correct Answer: C
Rationale: The correct answer is C: Fallopian tubes. These tubes are also known as uterine tubes because they connect the ovaries to the uterus, allowing eggs to travel from the ovaries to the uterus. The other choices are incorrect because:
A: Vas deferens is a tube that carries sperm from the epididymis to the urethra in males.
B: Epididymis is a coiled tube located on the back of each testicle where sperm mature.
D: Vagina is the muscular tube that connects the cervix to the external genitalia in females.
The average menstrual cycle is
- A. 14 days
- B. 18 days
- C. 24 days
- D. 28 days
Correct Answer: D
Rationale: The correct answer is D (28 days) as it is the average length of a menstrual cycle, which is typically counted from the first day of one period to the first day of the next. The menstrual cycle is controlled by hormonal changes and the average duration is around 28 days. This length allows for the proper preparation and shedding of the uterine lining. Choices A, B, and C are incorrect as they do not align with the typical length of a menstrual cycle, which is around 28 days.