Nokea
Which of the following parts of neuron transmits impulses away from the cell body?
- A. Dendrite
- B. . Neurolemma
- C. Axon
- D. Synapse
Correct Answer: C
Rationale: The correct answer is C: Axon. The axon is the part of the neuron that transmits impulses away from the cell body towards other neurons, muscles, or glands. Its structure allows for the rapid transmission of electrical signals.
Rationale:
1. Dendrites receive signals and transmit them towards the cell body, so A is incorrect.
2. Neurolemma is the outermost layer of a Schwann cell, not a part of the neuron responsible for transmitting impulses, so B is incorrect.
3. The synapse is the junction between two neurons where communication occurs, not a part of the neuron transmitting impulses, so D is incorrect.
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A client requires minor surgery for removal of a basal cell tumor. The anesthesiologist administers the anesthetic ketamine hydrochloride (Ketalar), 60g IV. After Ketamine administration, the nurse should monitor the client for:
- A. Muscle rigidity and spasms
- B. Hiccups
- C. Extrapyramidal reactions
- D. Respiratory depression
Correct Answer: A
Rationale: The correct answer is A: Muscle rigidity and spasms. Ketamine can cause muscle rigidity and spasms as a side effect. The anesthesiologist should monitor the client for this adverse reaction. Muscle rigidity and spasms are common with ketamine administration and can affect the client's comfort and safety during the procedure. It is important for the nurse to promptly address any signs of muscle rigidity or spasms to prevent complications.
Summary of why other choices are incorrect:
B: Hiccups - Ketamine can cause hiccups, but it is not the primary side effect to monitor for in this scenario.
C: Extrapyramidal reactions - Ketamine does not typically cause extrapyramidal reactions.
D: Respiratory depression - Ketamine is known for its minimal effect on respiratory depression compared to other anesthetics. Monitoring respiratory depression is still important, but not the primary concern with ketamine administration in this case.
A surgical intervention that can cause substantial remission of myasthenia gravis is:
- A. Esophagostomy
- B. Thymectomy
- C. Myomectomy
- D. Spleenectomy
Correct Answer: B
Rationale: The correct answer is B: Thymectomy. Thymectomy involves the surgical removal of the thymus gland, which is often abnormal in individuals with myasthenia gravis. The thymus plays a role in the development of the immune system and can contribute to the autoimmune response seen in myasthenia gravis. By removing the thymus gland, the autoimmune response may be reduced, leading to substantial remission of symptoms.
Choice A, Esophagostomy, involves creating a surgical opening into the esophagus and is not a treatment for myasthenia gravis. Choice C, Myomectomy, is the surgical removal of uterine fibroids and is unrelated to myasthenia gravis. Choice D, Spleenectomy, is the removal of the spleen and is not a standard treatment for myasthenia gravis.
A nurse is developing a care plan for a patient with a pelvic fracture on bed rest. Which goal statement is realistic for the nurse to assign to this patient?
- A. Patient will increase activity level this shift.
- B. Patient will turn side to back to side with assistance every 2 hours.
- C. Patient will use the walker correctly to ambulate to the bathroom as needed.
- D. Patient will use a sliding board correctly to transfer to the bedside commode as needed.
Correct Answer: C
Rationale: The correct answer is C because it is a realistic goal for a patient with a pelvic fracture on bed rest. The patient needs to use a walker correctly to ambulate safely to the bathroom, which promotes mobility and independence while ensuring safety. This goal is specific, measurable, achievable, relevant, and time-bound.
Choice A is incorrect because increasing activity level may not be safe or feasible for a patient with a pelvic fracture. Choice B is incorrect as turning every 2 hours may not be necessary or practical for this patient. Choice D is incorrect as using a sliding board may not be appropriate or necessary for someone with a pelvic fracture.
To provide safe care for Mrs. Zeno, it is important for the nurse to check the bedside for the presence of:
- A. A tracheostomy set
- B. A hypothermia blanket
- C. An intravenous set-up
- D. A syringe and edrophonium HCl(Tensilon)
Correct Answer: B
Rationale: The correct answer is B: A hypothermia blanket. This is important because hypothermia can lead to complications such as shivering, increased risk of infection, and altered drug metabolism. Checking for the hypothermia blanket ensures Mrs. Zeno's temperature is regulated, promoting safety.
A: A tracheostomy set is not directly related to Mrs. Zeno's immediate safety unless she has a tracheostomy in place.
C: An intravenous set-up is important for administering medications, fluids, or blood products, but it is not directly related to Mrs. Zeno's safety at the bedside.
D: A syringe and edrophonium HCl(Tensilon) is specific to a diagnostic test for myasthenia gravis, which may not be relevant to Mrs. Zeno's current condition or safety.
Which of the following is the most numerous type of white blood cell (WBC)?
- A. Neutrophil
- B. Basophil
- C. Eosinophil
- D. Lymphocyte
Correct Answer: A
Rationale: The correct answer is A: Neutrophil. Neutrophils are the most numerous type of WBC, typically comprising 50-70% of total WBC count. They are key players in the body's immune response, phagocytizing pathogens. Basophils, eosinophils, and lymphocytes are less numerous than neutrophils. Basophils are involved in allergic reactions, eosinophils combat parasitic infections, and lymphocytes play a critical role in adaptive immunity. However, in terms of sheer numbers, neutrophils outnumber the other types of WBC.