Nokea
Fertilization usually occurs in the nuclear division only. ______.
- A. Meiosis produces two
- B. ovary
- C. vesicular (Graafian) follicle
- D. Meiosis occurs in all cells of
Correct Answer: D
Rationale: The correct answer is D because meiosis occurs in all cells of the body. Meiosis is a specialized type of cell division that produces gametes (sperm and egg cells) with half the number of chromosomes. Fertilization, the fusion of sperm and egg, typically occurs after meiosis in the reproductive organs. Choices A, B, and C are incorrect because they do not directly relate to the process of fertilization or meiosis occurring in all cells. Choice A talks about the outcome of meiosis, choice B refers to a specific organ, and choice C mentions a stage in the development of an egg cell.
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The fingerlike ends of fallopian tubes are called as:
- A. Cilia
- B. Papillae
- C. Flagellae
- D. Fimbriae
Correct Answer: D
Rationale: The correct answer is D: Fimbriae. Fimbriae are the fingerlike projections at the end of the fallopian tubes that help capture the released egg from the ovary. They create a sweeping motion to guide the egg into the tube for fertilization. Cilia (A) are hair-like projections that help with movement, but they are not specific to the fallopian tubes. Papillae (B) are small, raised projections found in various organs, not in the fallopian tubes. Flagellae (C) are whip-like structures used for movement in some cells, not found in the fallopian tubes. In summary, fimbriae are specifically designed to capture and guide the egg, making them the correct choice.
Which structure lies posterior to the bladder and anterior to the rectum and secretes an alkaline, fructose filled fluid?
- A. Prostate
- B. bulbourethral gland
- C. Seminal vesicles
- D. Spongy urethra
Correct Answer: C
Rationale: The correct answer is C: Seminal vesicles. These glands are located posterior to the bladder and anterior to the rectum. They secrete an alkaline fluid rich in fructose, which nourishes and supports sperm viability. The other choices are incorrect because: A) The prostate is located below the bladder and surrounds the urethra, secreting a milky fluid; B) The bulbourethral gland is located below the prostate and secretes a clear, viscous fluid; D) The spongy urethra is a part of the male urethra that runs through the penis, responsible for transporting urine and semen.
What is the first stage of labour?
- A. Dilation of the cervix.
- B. Delivery of the infant.
- C. Contraction of the uterus.
- D. Delivery of the placent
Correct Answer: A
Rationale: The correct answer is A: Dilation of the cervix. This is the first stage of labor, where the cervix begins to open and thin out to allow the baby to pass through the birth canal. This process is crucial in preparing the body for delivery. The other choices are incorrect as they occur in later stages of labor. B: Delivery of the infant is the second stage, C: Contraction of the uterus is a general process throughout labor, and D: Delivery of the placenta is the third stage after the baby is born.
Within which structure in the human body does specialization of parts of the developing baby take place?
- A. ovary
- B. uterus
- C. testis
- D. pancreas
Correct Answer: B
Rationale: The correct answer is B: uterus. Specialization of parts of the developing baby takes place in the uterus during pregnancy. The uterus is where the fertilized egg implants and the embryo develops into a specialized structure known as a fetus. The other choices (A: ovary, C: testis, D: pancreas) do not play a direct role in the development of the baby during pregnancy. The ovary is involved in producing eggs, the testis produces sperm, and the pancreas is responsible for producing digestive enzymes and hormones, but they are not directly involved in the specialization of parts of the developing baby.
Rhabdomyosarcoma is the malignant tumor of the
- A. Smooth muscle
- B. Cardiac
- C. Visceral muscle
- D. Striated muscle
Correct Answer: D
Rationale: Rhabdomyosarcoma is a malignant tumor arising from striated muscle cells, hence the correct answer is D. Striated muscle cells are also known as skeletal muscle cells, which are voluntary muscles responsible for movement. Smooth muscle (Choice A) and visceral muscle (Choice C) are types of involuntary muscles found in internal organs, while cardiac muscle (Choice B) is the muscle specific to the heart. Therefore, choices A, B, and C are incorrect for this question.