Although the Heart Does Not Require the Nervous System to Initiate

question 198

Multiple Choice

Although the heart does not require the nervous system to initiate contraction events:

• A) it is sympathetically innervated via cardiac nerve fibers.
• B) it is parasympathetically innervated by vagus nerve fibers.
• C) it is innervated by the phrenic nerve.
• D) it is innervated by the sympathetic division of the autonomic nervous system only.
• E) both (a) and (b) above.

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Definitions:

Social system

An organized collection of parts that are integrated to accomplish an overall goal; often refers to a society's structured network of relationships and institutions.

Institutional

Relating to an established organization, especially one with societal, educational, or governmental functions.

Organization

An entity comprising multiple people, such as an institution or an association, that has a particular purpose, such as a business or government department.

Organization levels

The different layers of authority and responsibility within an organization, typically ranging from senior executives to frontline employees.