Which Statement Concerning Pacemaker Activity Is Correct

question 297

Multiple Choice

Which statement concerning pacemaker activity is correct?

• A) refers to spontaneous depolarizations of the membrane resulting from shifts in passive ionic fluxes accompanying automatic changes in channel permeability.
• B) refers to spontaneous depolarizations of the membrane due to cyclical changes in Na⁺- K⁺ pump activity.
• C) It is characteristic of single-unit smooth muscle but not found in any other muscle type.
• D) It is characteristic of multiunit muscle but not found in any other muscle type

Identify appropriate self-help and complementary techniques for managing common health problems.

Recognize the importance of safety, interactions, and potential side effects associated with herbal supplements and other CAM practices.

Evaluate the credibility and reliability of sources for information on integrative therapies.

Understand the role of the nurse in guiding patients through safe use of CAM and integrating these practices with conventional medicine.

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Definitions:

Sensory Adaptation

The process by which our senses adjust to different levels of stimulation, allowing us to notice changes in the environment more than constant stimuli.

Odour

A distinctive smell, especially an unpleasant one, perceived by the olfactory nerve system.

Sensory Adaptation

The procedure through which receptors sensing the environment become less alert to unchanged stimuli through time.

Sensory Sensitization

An increased response to a stimulus following repeated exposure to it.