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:

Electroencephalography

A method of recording electrical activity of the brain by placing electrodes along the scalp.

Hypoglossal Nerves

Cranial nerves responsible for the movement of most of the muscles of the tongue, crucial for swallowing and speech.

Tongue

A muscular organ in the mouth that is involved in tasting, swallowing, and speaking.

Accessory Nerves

Cranial nerves that control specific muscles in the shoulder and neck, facilitating movement and contributing to the autonomic nervous system.