Nokea
Giving prostaglandin E2 (PGE2) to a pregnant woman may result in an abortion. What is the best explanation for this finding?
- A. PGE2 strongly stimulates uterine contraction
- B. PGE2 causes constriction of the arteries leading to the placenta
- C. PGE2 stimulates the release of oxytocin from the posterior pituitary
- D. PGE2 increases the secretion of progesterone from the corpus luteum
Correct Answer: A
Rationale: The correct answer is A because prostaglandin E2 (PGE2) is known to strongly stimulate uterine contractions. This can lead to abortion by triggering premature labor and causing the expulsion of the fetus. Choice B is incorrect as PGE2 does not cause arterial constriction leading to the placenta. Choice C is incorrect because PGE2 does not stimulate the release of oxytocin; rather, oxytocin itself is a hormone that stimulates uterine contractions. Choice D is also incorrect as PGE2 does not increase progesterone secretion from the corpus luteum; in fact, PGE2 can have the opposite effect by inhibiting progesterone synthesis.
You may also like to solve these questions
The process by which a secondary oocyte is ejected from the ovary is called ________.
- A. emission
- B. menses
- C. fertilization
- D. ovulation
Correct Answer: D
Rationale: The correct answer is D: ovulation. This process involves the release of a mature egg (secondary oocyte) from the ovarian follicle. During ovulation, the egg is released into the fallopian tube, where it can potentially be fertilized by sperm.
A: emission - Incorrect. This term typically refers to the discharge of semen from the male reproductive system.
B: menses - Incorrect. Menses refers to the shedding of the uterine lining during menstruation, not the release of an egg from the ovary.
C: fertilization - Incorrect. Fertilization is the process of the sperm uniting with the egg, which occurs in the fallopian tube after ovulation.
Floating ribs of the thoracic cage are
- A. 1-7 ribs
- B. 8-10 ribs
- C. 11, 12 ribs
- D. None of the above
Correct Answer: C
Rationale: The correct answer is C: 11, 12 ribs. Floating ribs are ribs that do not have a direct attachment to the sternum. Ribs 11 and 12 are considered floating ribs because they do not attach to the sternum or cartilage of other ribs, only to the vertebrae in the back. Choices A and B are incorrect because ribs 1-10 are not considered floating ribs. Choice D is incorrect because ribs 11 and 12 are indeed the floating ribs of the thoracic cage.
You have just received change-of-shift report about your assigned clients. In what order will you assess these clients?
- A. A 68-year-old client who has new-onset confusion after having a bilateral orchiectomy.
- B. A 44-year-old client who is receiving IV antibiotics for acute pyelonephritis.
- C. A 55-year-old client who is scheduled for discharge after having a TURP.
- D. A 77-year-old client who is receiving continuous bladder irrigation after a TURP.
Correct Answer: A
Rationale: New-onset confusion in a postoperative client could indicate complications such as infection or electrolyte imbalance.
Which of the following findings would confirm that a female client has mastitis? Choose all that apply.
- A. A crack in the nipple or the areola
- B. Multiple lumps within the breast tissue
- C. Flat and soft breasts
- D. Support the arm and the shoulder with pillows.
Correct Answer: A
Rationale: A crack in the nipple or areola is a common sign of mastitis.
______________________ is the motion that extends the foot downward toward the ground as when pointing the toes or stepping on the gas pedal.
- A. Dorsiflexion
- B. Plantar flexion
- C. Rotation
- D. Flexion
Correct Answer: B
Rationale: The correct answer is B: Plantar flexion. Plantar flexion refers to the motion of extending the foot downward towards the ground, like when pointing the toes or pressing the gas pedal. This action is mainly controlled by the calf muscles, particularly the gastrocnemius and soleus. Dorsiflexion (A) is the opposite motion, where the foot is flexed upward towards the shin. Rotation (C) involves turning around an axis and is not relevant to this specific movement. Flexion (D) refers to the bending of a joint, not the extension of the foot downward. In summary, plantar flexion is the correct answer because it accurately describes the motion of extending the foot downward, while the other choices do not match the described movement.