Nokea
Which hormone is released from the testes?
- A. Progesterone
- B. Vasopressin
- C. Testosterone
- D. None of the above
Correct Answer: C
Rationale: The correct answer is testosterone. Testosterone is the primary male sex hormone produced in the testes. Progesterone is a female sex hormone primarily produced in the ovaries, not in the testes. Vasopressin is a hormone released by the pituitary gland to regulate water balance in the body, not produced by the testes. Therefore, choices A, B, and D are incorrect.
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Discuss the anatomical/physiological changes in pregnancy under the following: Cardiovascular system
- A. The heart is displaced upward and to the left by the enlarging uterus, cardiac capacity increases, and blood pressure declines slightly.
- B. The heart is displaced downward and to the right, and blood pressure increases.
- C. The cardiovascular system remains unchanged during pregnancy.
- D. Cardiovascular changes include increased peripheral resistance and reduced cardiac output.
Correct Answer: A
Rationale: During pregnancy, the cardiovascular system undergoes changes such as the heart being displaced upward and to the left by the enlarging uterus, increased cardiac capacity, and a slight decline in blood pressure. Choice B is incorrect as the heart is displaced upwards, not downwards, and blood pressure typically decreases slightly. Choice C is incorrect as the cardiovascular system does undergo changes during pregnancy. Choice D is incorrect as cardiovascular changes in pregnancy involve increased cardiac output rather than reduced output.
Which hormone regulates the production of milk after childbirth?
- A. Prolactin
- B. Oxytocin
- C. Estrogen
- D. Progesterone
Correct Answer: A
Rationale: The correct answer is Prolactin. Prolactin is the hormone responsible for regulating the production of milk after childbirth. It stimulates the mammary glands in the breasts to produce milk. Oxytocin, on the other hand, is responsible for the ejection of milk from the breasts. Estrogen and progesterone play roles in the menstrual cycle and pregnancy but are not directly involved in milk production. Therefore, choices B, C, and D are incorrect.
Which of the following are outcomes of an ectopic pregnancy EXCEPT?
- A. Tubal abortion
- B. Tubal rupture
- C. Intra-tubal bleeding
- D. Secondary abdominal pregnancy
Correct Answer: D
Rationale: Ectopic pregnancy occurs when a fertilized egg implants outside the uterus. Common outcomes include tubal abortion (spontaneous termination of ectopic pregnancy within the fallopian tube), tubal rupture (rupture of the fallopian tube leading to internal bleeding), and intra-tubal bleeding. Secondary abdominal pregnancy, on the other hand, is a rare occurrence and not a typical outcome of an ectopic pregnancy. It involves the implantation of a fertilized egg in the peritoneal cavity rather than the uterus.
Which of the following is an example of an oviparous animal?
- A. Pigeon
- B. Elephant
- C. Sheep
- D. None of the above
Correct Answer: A
Rationale: The correct answer is A: Pigeon. Oviparous animals are those that lay eggs, and pigeons fall under this category. Choice B, Elephant, is incorrect because elephants are viviparous, giving birth to live young. Choice C, Sheep, is also incorrect as sheep are viviparous animals. Choice D, None of the above, is not the correct answer as a pigeon is indeed an example of an oviparous animal.
Each breast is situated on each side of the sternum and extends between the:
- A. 1st and 6th rib
- B. 2nd and 6th rib
- C. 3rd and 6th rib
- D. 4th and 6th rib
Correct Answer: B
Rationale: The correct answer is B: 2nd and 6th rib. Each breast is situated between the 2nd and 6th ribs. This anatomical location is important for understanding breast examination techniques and identifying potential abnormalities. Choices A, C, and D are incorrect because the breasts do not extend as far as the 1st, 3rd, or 4th rib, respectively. Understanding the precise anatomical location of structures is crucial in healthcare to ensure accurate assessments and interventions.