Conduction by Local Current Flow

question 26

Multiple Choice

Conduction by local current flow

• A) occurs in unmyelinated fibers.
• B) is faster than propagation of an action potential in myelinated fibers because myelin acts as an insulator to slow down the impulse.
• C) involves current flowing locally between the active and adjacent inactive areas, thereby bringing the inactive areas to threshold so that they too become active (i.e., have an action potential).
• D) both (a) and (c) above.
• E) all of these answers.

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Definitions:

Pleuritis

Inflammation of the pleura, the double-layered membrane surrounding the lungs and lining the chest cavity.

Auscultation

This refers to the method used by healthcare professionals to listen to the sounds of the body, typically with a stethoscope, as part of a physical examination.

Adventitious Sounds

Unusual or abnormal sounds heard during breathing, indicating respiratory issues.