basal body temperature rise of is seen in the luteal phase due to thermogenic effects of a metabolite of progesterone in a normal cycle

HESI RN

Reproductive Health Exam

1. Basal body temperature rise of _____ is seen in the luteal phase due to the thermogenic effects of a metabolite of progesterone in a normal cycle:

A. 0.1-0.5
B. 0.2-0.5
C. 1.0-2.0
D. 1.5-2.0

Correct answer: B

Rationale: A basal body temperature rise of 0.2-0.5 degrees Celsius is typically seen in the luteal phase of the menstrual cycle due to the thermogenic effects of a metabolite of progesterone. This temperature rise helps to indicate ovulation has occurred. Choices A, C, and D are incorrect as they do not reflect the usual range of temperature increase observed during the luteal phase. A rise of 0.1-0.5 degrees Celsius is too narrow (eliminating choice A), while ranges of 1.0-2.0 and 1.5-2.0 degrees Celsius are too high and not consistent with the expected basal body temperature changes during the menstrual cycle.

2. What is an organelle that helps the sperm to penetrate the ovum?

A. Acrosome
B. Zona pellucida
C. Megalis
D. None of the above

Correct answer: A

Rationale: The correct answer is Acrosome. The acrosome is an organelle located at the head of a sperm cell and contains enzymes that aid in the penetration of the ovum during fertilization. The Zona pellucida is a glycoprotein membrane surrounding the ovum, not an organelle. Megalis is not a relevant organelle in this context. Therefore, the correct choice is A, Acrosome.

3. Which of the following is incorrect about oral contraceptive pill 'Saheli'?

A. It is taken by females
B. It has very few side effects
C. It is a steroidal preparation
D. It is 'Once a week' pill

Correct answer: C

Rationale: Saheli' is not a steroidal preparation, it is a non-steroidal oral contraceptive.

4. Which of the following is an example of a viviparous animal?

A. Goat
B. Duck
C. Crocodile
D. None of the above

Correct answer: A

Rationale: The correct answer is A, goat. Viviparous animals give birth to live young ones instead of laying eggs. Ducks and crocodiles are oviparous, meaning they lay eggs, making them incorrect choices. 'None of the above' is incorrect because goats are a valid example of viviparous animals.

5. During which phase of the menstrual cycle does the Graafian follicle rupture?

A. Regenerative
B. Menstruation
C. Ovulation
D. Proliferative

Correct answer: C

Rationale: The correct answer is C: Ovulation. The Graafian follicle ruptures during the ovulation phase, releasing the mature egg from the ovary. This process marks the midpoint of the menstrual cycle. Choice A, Regenerative, is incorrect as it does not correspond to a specific phase of the menstrual cycle. Choice B, Menstruation, is incorrect because menstruation is the shedding of the uterine lining and occurs after ovulation if fertilization does not occur. Choice D, Proliferative, is incorrect as it refers to the phase in which the uterine lining thickens in preparation for a potential embryo implantation, which happens after ovulation.