Which of These Statements Describes Pacemaker Activity

question 241

Multiple Choice

Which of these statements describes pacemaker activity

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

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Definitions:

Slow To Anger

A temperament or personality trait of an individual who does not easily become angry or agitated, demonstrating patience and tolerance.

Hardy Personality

A person who seems to thrive on stress but lacks the anger and hostility of the Type A personality.

Challenges

Refers to obstacles or difficulties that need to be overcome.

Type C Personality

Pleasant but repressed person, who tends to internalize his or her anger and anxiety and who finds expressing emotions difficult.