Nokea
Which of the following practices would delay the decline in muscle strength and bone mass in older adults?
- A. Maintaining an adequate calcium intake
- B. Maintaining an active lifestyle
- C. Maintaining a low-activity lifestyle after the age of 35
- D. Reducing the calcium intake after the age of 60
Correct Answer: B
Rationale: An active lifestyle helps maintain muscle strength and bone mass.
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A 72-year-old man tells the nurse that he cannot perform most of the physical activities he could do 5 years ago because of overall joint aches and pains. What can the nurse do to assist the patient to prevent further deconditioning and decrease the risk for developing musculoskeletal problems?
- A. Limit weight-bearing exercise to prevent stress on fragile bones and possible hip fractures
- B. Advise the patient to avoid the use of canes and walkers because they increase dependence on ambulation aids
- C. Advise the patient to increase his activity by more frequently climbing stairs in buildings and other environments with steps
- D. Discuss use of over-the-counter (OTC) medications to decrease inflammation and pain so that exercise can be maintained
Correct Answer: D
Rationale: OTC medications can help reduce pain and inflammation, allowing the patient to maintain an active lifestyle.
Transmission across a synapse is achieved mainly by a________ .
- A. ionic bonding
- B. diffusion of neurotransmitter across the cleft
- C. physical contact of axon to dendrite allowing the nerve impulse to continue onward
- D. diffusion of sodium ions across the cleft
Correct Answer: B
Rationale: Transmission across a synapse is primarily achieved by the diffusion of neurotransmitter molecules across the synaptic cleft. When an action potential reaches the axon terminal, it triggers the release of neurotransmitters, which diffuse across the cleft and bind to receptors on the postsynaptic neuron. This chemical signaling allows for precise and regulated communication between neurons.
Pons, cerebellum and medulla are part of which brain?
- A. Forebrain
- B. Midbrain
- C. Hindbrain
- D. None of the above
Correct Answer: C
Rationale: Hindbrain is the correct answer because it consists of the pons, cerebellum, and medulla oblongata. These structures are responsible for coordinating movement, balance, and vital autonomic functions such as breathing and heart rate.
A patient has unilateral facial paralysis and is unable to close his or her right eye. He or she is diagnosed with Bell's palsy. He or she asks the physician if there is any special care required for his or her eye. What is the best response?
- A. No, since the symptoms will go away in a few weeks.
- B. Wear sunglasses.
- C. Increase fluid intake to prevent dryness of the eye.
- D. Yes, you will need to instill artificial teardrops and use an eye patch.
Correct Answer: D
Rationale: Protecting the eye from dryness and injury is essential when the eyelid cannot close properly.
The midbrain, pons and medulla oblongata are housed in the:
- A. diencephalon
- B. hypothalamus
- C. brain stem
- D. pineal gland
Correct Answer: C
Rationale: The midbrain, pons, and medulla oblongata are parts of the brain stem, which controls vital functions like breathing and heart rate. The diencephalon, hypothalamus, pineal gland, and cerebellum are separate structures. Therefore, C is the correct answer.