Nokea
Bat shaped bone that form part of the base of the skull is called as
- A. Ethmoid bone
- B. Sphenoid bone
- C. Parietal bone
- D. Occipital bone
Correct Answer: B
Rationale: The correct answer is B: Sphenoid bone. The sphenoid bone is bat-shaped and forms part of the base of the skull. It is located in the middle of the skull, helping to connect the cranial bones. The other choices, A: Ethmoid bone, C: Parietal bone, and D: Occipital bone, do not match the description of a bat-shaped bone at the base of the skull. The ethmoid bone is located between the eyes, the parietal bone forms the top and sides of the skull, and the occipital bone forms the back and base of the skull. Therefore, B is the correct answer based on the specific description given in the question.
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Which hormone is produced by the corpus luteum that helps maintain pregnancy?
- A. Estrogen
- B. Testosterone
- C. Progesterone
- D. Relaxin
Correct Answer: C
Rationale: The correct answer is C: Progesterone. The corpus luteum produces progesterone, which is essential for maintaining the uterine lining and supporting early pregnancy. Progesterone helps prevent contractions of the uterus and supports the development of the placenta. Estrogen (A) is important for the initial thickening of the uterine lining but does not play a direct role in maintaining pregnancy. Testosterone (B) is not involved in pregnancy maintenance. Relaxin (D) helps relax the uterine muscles but is not primarily responsible for maintaining pregnancy.
Reproduction in humans usually requires
- A. the process of cloning
- B. mitotic cell division of gametes
- C. gametes with chromosomes that are not paired
- D. the external fertilization of sex cells
Correct Answer: C
Rationale: The correct answer is C because reproduction in humans typically involves the fusion of gametes with chromosomes that are not paired, resulting in the formation of a zygote with a complete set of paired chromosomes. This process is known as sexual reproduction. Choice A, cloning, does not involve the fusion of gametes and is a form of asexual reproduction. Choice B, mitotic cell division of gametes, is incorrect as gametes undergo meiosis to form haploid cells, not mitosis. Choice D, external fertilization of sex cells, is not typical in humans as fertilization usually occurs internally.
A client with stage IV ovarian cancer and recurrent ascites is admitted to the medical unit for a paracentesis. Which nursing actions included in the plan of care will you delegate to an LPN who has worked on the medical unit for several years?
- A. Obtain a paracentesis tray from the central supply area.
- B. Complete the short-stay client admission form.
- C. Take vital signs every 15 minutes after the procedure.
- D. Provide discharge instructions after the procedure.
Correct Answer: C
Rationale: Taking vital signs is within the scope of practice for an LPN.
Which glands produce a thick, yellowish secretion that nourishes and activates sperm?
- A. Bulbourethral glands
- B. Prostate
- C. Seminal vesicles
- D. Ejaculatory duct
Correct Answer: C
Rationale: The correct answer is C: Seminal vesicles. Seminal vesicles produce a thick, yellowish secretion that provides nutrients and activates sperm. This secretion, along with sperm from the testes, forms semen. Bulbourethral glands produce a clear, viscous fluid that lubricates the urethra during sexual arousal (not yellowish). The prostate gland secretes a milky fluid that neutralizes acidic vaginal secretions. The ejaculatory duct is a passageway for semen to travel from the vas deferens to the urethra and does not produce any secretions. Therefore, the seminal vesicles are the correct answer as they specifically produce the described yellowish secretion that nourishes and activates sperm.
If bone is splintered or crushed in several places it is termed as
- A. Complex fracture
- B. Greenstick fracture
- C. Impacted fracture
- D. Comminuted fracture
Correct Answer: D
Rationale: The correct answer is D: Comminuted fracture. This type of fracture occurs when the bone is splintered or crushed in several places, leading to multiple bone fragments. This term accurately describes the situation where the bone is broken into multiple pieces.
A: Complex fracture refers to a fracture that involves multiple breaks in a bone, but not necessarily into multiple small fragments.
B: Greenstick fracture is an incomplete fracture where the bone is bent but not completely broken.
C: Impacted fracture occurs when the broken ends of the bone are driven into each other, typically seen in a fall with a lot of force, but it does not involve multiple bone fragments like in a comminuted fracture.