What Is the Name of the Structure Labeled C

question 101

Multiple Choice

What is the name of the structure labeled C?

• A) Endomysium
• B) Myofibril
• C) Muscle fiber
• D) Myofilament

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Definitions:

Primary Pacemaker

denotes the sinoatrial (SA) node in the heart, which naturally sets the pace for heart rate by sending out electrical impulses.

SA Node

The sinoatrial node, a group of cells in the right atrium of the heart that regulates the heart's electrical rhythm.

AV Node

The atrioventricular node, a component of the heart's electrical system responsible for delaying the transmission of electrical impulses from the atria to the ventricles.

Chronic Obstructive

Referring to chronic obstructive pulmonary disease (COPD), a long-term lung disease characterized by a persistent obstruction of airflow from the lungs.