MEDICAL PHYSIOLOGY

PHYSIOLOGY

CARDIOVASCULAR PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
structures responsible for electric current in the heart
A
electric waves
B
nodal system
C
systemic system
D
electrical system
Explanation: 

Detailed explanation-1: -An electrical stimulus is generated by the sinus node (also called the sinoatrial node, or SA node). This is a small mass of specialized tissue located in the right upper chamber (atria) of the heart. The sinus node generates an electrical stimulus regularly, 60 to 100 times per minute under normal conditions.

Detailed explanation-2: -An electrical signal starts in the sinus node of the heart. This is also called the sinoatrial node (SA node). This is a small area of special cells in the right upper chamber (atrium) of the heart.

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