Nokea
The hormone that stimulates uterine contractions is
- A. oxytocin
- B. estrogen
- C. granular cell carcinoma
- D. progesterone
Correct Answer: A
Rationale: The correct answer is A: oxytocin. Oxytocin is the hormone responsible for stimulating uterine contractions during labor and childbirth. It is produced by the pituitary gland and plays a crucial role in the initiation and progression of labor. Estrogen (B) and progesterone (D) are involved in the menstrual cycle and pregnancy maintenance but do not directly stimulate uterine contractions. Granular cell carcinoma (C) is a type of cancer and not a hormone related to uterine contractions.
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The contraction of the myoepithelial breast cells is stimulated by _____.
- A. estrogen
- B. progesterone
- C. oxytocin
- D. prolactin
Correct Answer: C
Rationale: The correct answer is C: oxytocin. Myoepithelial cells contract to facilitate milk ejection during breastfeeding. Oxytocin is the hormone responsible for stimulating this contraction. Estrogen and progesterone are involved in breast development and preparing for lactation but do not directly stimulate myoepithelial cell contraction. Prolactin is responsible for milk production but does not directly trigger myoepithelial cell contraction.
Which of the following are the advantages of a vaginal hysterectomy over an abdominal hysterectomy?
- A. Fewer complications
- B. Increased recovery time
- C. Radical hysterectomy can even be done laparoscopically
- D. No pain
Correct Answer: A
Rationale: Vaginal hysterectomies generally have fewer complications and quicker recovery times compared to abdominal procedures.
Which statement is true for the reproduction of reptiles and birds?
- A. Both newly hatched birds and reptiles require parental care
- B. They are both ovoviviparous.
- C. Both exhibit external fertilization.
- D. Both can reproduce asexually.
Correct Answer: B
Rationale: The correct answer is B: They are both ovoviviparous. Reptiles and birds are ovoviviparous, meaning they lay eggs that hatch internally and give birth to live young. Reptiles and birds do not require parental care immediately after birth, so choice A is incorrect. They reproduce through internal fertilization, making choice C incorrect. Reproduction through asexual means is not common in reptiles and birds, making choice D incorrect.
Which of the following sets of tissues are all part of a developing follicle.
- A. granulosa cells, theca, corpus luteum
- B. theca, acrosome, antrum
- C. oocyte, corpus luteum, granulosa cells
- D. . zona pellucida, cumulus oophorous, theca
Correct Answer: D
Rationale: The correct answer is D because all the tissues mentioned (zona pellucida, cumulus oophorous, theca) are indeed part of a developing follicle. The zona pellucida is the glycoprotein layer surrounding the oocyte, the cumulus oophorous is a cluster of granulosa cells surrounding the oocyte, and the theca is a layer of connective tissue surrounding the follicle.
Choice A is incorrect because the corpus luteum is not part of a developing follicle. Choice B is incorrect because the acrosome is a structure in sperm, not the follicle. Choice C is incorrect because the corpus luteum is not part of a developing follicle, and the oocyte is already present within the follicle but is not considered a part of it.
Displacement of a bone form its joint is known as ____________________.
- A. Fracture
- B. Dislocation
- C. Displacement
- D. Sprain
Correct Answer: B
Rationale: Dislocation is the correct answer because it specifically refers to the displacement of a bone from its joint. A fracture (choice A) is a break in a bone, not a displacement. Choice C, displacement, is too general and does not specify the bone being out of a joint. A sprain (choice D) involves the stretching or tearing of ligaments, not the displacement of a bone. Therefore, dislocation is the most accurate term for the scenario described.