Nokea
Patella is a
- A. Irregular bone
- B. Short bone
- C. Sesamoid bone
- D. Flat bone
Correct Answer: C
Rationale: The patella is a sesamoid bone located within the tendon of the quadriceps femoris muscle. Sesamoid bones are small, round bones embedded within tendons, providing protection and improving the mechanical advantage of the muscle. It is not irregular (A), short (B), or flat (D) as it does not fit the structural characteristics of those bone types. Therefore, the correct answer is C.
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Which cells secrete testosterone?
- A. Sertoli cells
- B. Spermatogenic cells
- C. Leydig cells
- D. Oogonia
Correct Answer: C
Rationale: Step-by-step rationale:
1. Leydig cells are located in the testes and are responsible for secreting testosterone.
2. Testosterone is a male sex hormone crucial for regulating various functions in the body.
3. Sertoli cells provide support for sperm development, not testosterone secretion.
4. Spermatogenic cells are involved in sperm production, not testosterone secretion.
5. Oogonia are female germ cells, not involved in testosterone secretion.
Summary:
Choice C (Leydig cells) is correct because they are the specific cells in the testes responsible for secreting testosterone. Choices A, B, and D are incorrect as they are associated with other functions related to reproduction and are not involved in testosterone secretion.
What is the final stage of labour?
- A. Dilation of the cervix.
- B. Delivery of the infant.
- C. Contraction of the uterus.
- D. Delivery of the placenta
Correct Answer: D
Rationale: The final stage of labor is the delivery of the placenta. This occurs after the baby is born. The placenta is essential for providing nutrients and oxygen to the baby during pregnancy, but once the baby is born, it needs to be expelled from the mother's body. This process is crucial to prevent postpartum complications.
A: Dilation of the cervix occurs in the first stage of labor.
B: Delivery of the infant happens in the second stage of labor.
C: Contraction of the uterus is a continuous process throughout labor but does not signify the final stage.
In summary, the correct answer is D because it represents the final step in the labor process, while the other options pertain to earlier stages of labor.
Which of the following instructions would a nurse give a client undergoing treatment for an HSV-2 infection?
- A. Have an annual Papanicolaou smear to detect cervical cancer.
- B. Have an annual mammogram to detect breast cancer.
- C. Increase the frequency of breast self-examination for early detection of any breast disorders.
- D. Undergo an HIV detection test every six months.
Correct Answer: A
Rationale: Regular Pap smears are important for detecting cervical changes related to HSV-2.
Which is true of prostate cancer?
- A. It is commonly lethal.
- B. It is one of the less common forms of cancer.
- C. Family history does not appear to be a risk factor.
- D. Ethnicity is a risk factor.
Correct Answer: D
Rationale: The correct answer is D. Ethnicity is a risk factor for prostate cancer. African American men have a higher risk compared to other ethnicities. This is supported by research and epidemiological studies. Choice A is incorrect as prostate cancer, when detected early, has a high survival rate. Choice B is also incorrect as prostate cancer is one of the most common cancers in men. Choice C is incorrect as having a family history of prostate cancer is a known risk factor.
A young woman is given daily injections of a substance beginning on the 16th day of her normal menstrual cycle and continuing for 3 weeks. As long as the injections continue, she does not menstruate. The injected substance could be which of the following?
- A. Testosterone
- B. FSH
- C. An inhibitor of progesterone’s actions
- D. A prostaglandin E2 inhibitor
Correct Answer: C
Rationale: The correct answer is C: An inhibitor of progesterone’s actions. Progesterone is responsible for maintaining the uterine lining, and inhibiting its actions would prevent menstruation. Testosterone (A) and FSH (B) do not directly affect menstruation. Prostaglandin E2 (D) is involved in the menstrual process, but inhibiting it would not necessarily stop menstruation.