Question
Human Anatomy and Physiology Question on Cardiovascular system
The cardiac rhythm in a healthy human heart originates from ______.
A
Sinu-atrial node (SA)
B
Atrio-ventricular node (AV)
C
Aorta
D
Right atria
Answer
Sinu-atrial node (SA)
Explanation
Solution
The correct option is (A) : Sinu-atrial node (SA).