Nokea
Failure of the testes to descend into mitotic cell divisions occur as the the scrotum is a condition known as zygote travels down the uterine ________.
- A. phimosis
- B. the acrosomal reaction
- C. cryptorchidism
- D. cleavage
Correct Answer: C
Rationale: The correct answer is C: cryptorchidism. Cryptorchidism is the condition where one or both testes fail to descend into the scrotum. This leads to impaired spermatogenesis as the temperature in the abdominal cavity is too high for proper sperm production. Phimosis (A) is the narrowing of the opening of the foreskin, unrelated to testicular descent. The acrosomal reaction (B) is a process during fertilization, not related to testicular descent. Cleavage (D) refers to the rapid mitotic cell divisions of the zygote, not associated with testicular descent.
You may also like to solve these questions
The ovule that can be fecundated contains:
- A. 22 somatic chromosomes;
- B. 23 autosomes;
- C. a sex chromosome: X or Y;
- D. 11 pairs of somatic chromosomes;
Correct Answer: B
Rationale: The correct answer is B: 23 autosomes. The ovule contains half the number of chromosomes as the typical somatic cell, which is 46 in humans. This is because during meiosis, the number of chromosomes is reduced by half to ensure the correct chromosome number in the offspring. Therefore, the ovule contains 23 chromosomes, which are autosomes (non-sex chromosomes). Choices A, C, and D are incorrect because the ovule does not contain the same number of somatic chromosomes, a sex chromosome, or 11 pairs of somatic chromosomes.
Which of the following is suitable for the fertilization of an egg?
- A. Sperm
- B. Spermatid
- C. Primary spermatocyte
- D. Spermatogonium
Correct Answer: A
Rationale: The correct answer is A: Sperm. Sperm is the mature male reproductive cell capable of fertilizing an egg. It carries genetic material and is designed for the process of fertilization. Spermatid (B) is an immature sperm cell not yet capable of fertilizing an egg. Primary spermatocyte (C) is a cell undergoing meiosis to produce spermatids. Spermatogonium (D) is a stem cell that gives rise to spermatocytes but is not directly involved in fertilization. Therefore, only sperm (A) is suitable for fertilizing an egg.
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?
- A. Internal hemorrhoids are usually seen outside the anus and appear blue.
- B. Sometimes patients have other diseases, such as anal warts, that may be mistaken for internal hemorrhoids.
- C. Internal hemorrhoids are found higher in the rectum and usually can’t be felt unless they are infected or prolapsed.
- D. Both internal and external hemorrhoids arise from the same general area and produce the same kinds of symptoms.
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.
Cowper's gland is another name for:
- A. Prostate gland
- B. Testes
- C. Bulbourethral glands
- D. Preputial glands
Correct Answer: C
Rationale: The correct answer is C: Bulbourethral glands. Cowper's gland is another name for the bulbourethral glands, which are responsible for producing a lubricating fluid that helps neutralize acidity in the urethra before ejaculation. The prostate gland (A) is responsible for producing seminal fluid, the testes (B) are responsible for producing sperm, and the preputial glands (D) are glands found in the foreskin of the penis. Therefore, the bulbourethral glands (C) are the correct answer because they align with the function and location of Cowper's gland.
Which structure is composed of three cylindrical masses of erectile tissue each surrounded by a fibrous tissue?
- A. Testes
- B. Prostate
- C. Bladder
- D. Penis
Correct Answer: D
Rationale: The correct answer is D: Penis. The penis is composed of three cylindrical masses of erectile tissue (two corpora cavernosa and one corpus spongiosum) surrounded by fibrous tissue. The corpora cavernosa fill with blood during an erection, leading to rigidity. The other choices (A: Testes, B: Prostate, C: Bladder) do not fit the description of being composed of three cylindrical masses of erectile tissue surrounded by fibrous tissue. The testes are responsible for sperm production, the prostate is a gland that produces semen, and the bladder is a hollow muscular organ for storing urine.