Nokea
Which statement about the ovary is not true:
- A. it is a pair organ;
- B. it is a gland with mixed role;
- C. it is oval-shaped;
- D. it is located in the right flank
Correct Answer: D
Rationale: The correct answer is D because the ovary is not located in the right flank; it is located in the lower abdomen. A: The ovary is a pair organ, as there are two ovaries in the female reproductive system. B: The ovary is a gland with mixed roles, producing hormones and releasing eggs. C: The ovary is oval-shaped, which is anatomically correct. Therefore, choice D is incorrect as the ovary is not located in the right flank.
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The testicle vascularization:
- A. the arterial one is provided by the gonadal artery, a branch off the abdominal aorta;
- B. the venous one is tributary to the internal iliac vein;
- C. the arterial one is provided by the testicular artery, a branch off the internal iliac artery;
- D. the venous one is tributary to the inferior vena cava;
Correct Answer: A
Rationale: The correct answer is A because the arterial vascularization of the testicle is indeed provided by the gonadal artery, which is a branch off the abdominal aorta. This is anatomically accurate as the gonadal artery supplies blood to the testicles.
Choice B is incorrect because the venous drainage of the testicle is to the testicular vein, which drains into the inferior vena cava, not the internal iliac vein as stated in option B.
Choice C is incorrect because the testicular artery, not the internal iliac artery, is responsible for the arterial supply to the testicle.
Choice D is incorrect because the venous drainage of the testicle is not tributary to the inferior vena cava; instead, it drains into the left renal vein.
__________________ glands located just beneath the urinary bladder produce fluids that aid in nourishment and provides energy to the sperm cells
- A. Bulbourethral glands
- B. Bartholin's glands
- C. Seminal vesicle
- D. Prostate gland
Correct Answer: C
Rationale: The correct answer is C: Seminal vesicle. Seminal vesicles are located just beneath the urinary bladder and produce fluids that aid in nourishment and provide energy to sperm cells. They contribute a significant portion of seminal fluid, which contains nutrients and substances that enhance sperm motility and viability. The other choices are incorrect because: A (Bulbourethral glands) produce pre-ejaculate fluid for lubrication, B (Bartholin's glands) are located near the vaginal opening in females, and D (Prostate gland) produces a fluid that helps with sperm motility and viability but is not located just beneath the urinary bladder.
Which of the following is not involved in parturition.
- A. an increase in prostaglandin secretion
- B. an increase in uterine oxytocin receptors
- C. an increase in luteinising hormone secretion.
- D. an increase in oxytocin secretion.
Correct Answer: C
Rationale: Step-by-step rationale:
1. Parturition is the process of giving birth.
2. Luteinising hormone (LH) is primarily involved in the menstrual cycle and ovulation, not parturition.
3. Prostaglandins and oxytocin play crucial roles in initiating and sustaining labor.
4. An increase in uterine oxytocin receptors is necessary for effective uterine contractions during parturition.
5. Therefore, an increase in luteinising hormone secretion is not involved in parturition.
Summary of incorrect choices:
A: Incorrect - an increase in prostaglandin secretion is involved in parturition.
B: Incorrect - an increase in uterine oxytocin receptors is necessary for parturition.
D: Incorrect - an increase in oxytocin secretion is crucial for initiating labor.
The menstrual cycle is triggered each month by
- A. the release of blood from the uterus
- B. the buildup of the lining of the uterus
- C. hormones
- D. sexual intercourse
Correct Answer: C
Rationale: The correct answer is C: hormones. Hormones, specifically estrogen and progesterone, control the menstrual cycle by regulating the release of an egg from the ovary, thickening the uterine lining, and preparing the body for pregnancy or menstruation. Hormonal fluctuations throughout the cycle signal the body to shed the uterine lining if fertilization does not occur. Choices A and B are incorrect as they describe events during the menstrual cycle rather than the trigger itself. Choice D, sexual intercourse, does not directly trigger the menstrual cycle but may lead to conception, which is one of the outcomes of the menstrual cycle.
The ________________ is a muscular organ that is situated between the bladder and the rectum
- A. Vagina
- B. Uterus
- C. Vulva
- D. Ovary
Correct Answer: B
Rationale: The correct answer is B: Uterus. The uterus is a muscular organ located between the bladder and rectum. It plays a crucial role in pregnancy by nurturing and supporting the developing fetus. The other choices (A: Vagina, C: Vulva, D: Ovary) are incorrect because the vagina is a canal leading to the uterus, the vulva is the external genitalia, and the ovary is responsible for producing eggs and hormones. Therefore, the correct answer is the uterus based on its anatomical location and function in the reproductive system.