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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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Jbev757 Jbev757
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6 years ago
The cardiac electrical impulse normally begins spontaneously in the sinoatrial (SA) node because it:
 
  a. has a superior location in the right atrium.
  b. is the only area of the heart capable of spontaneous depolarization.
  c. has rich sympathetic innervation via the vagus nerve.
  d. depolarizes more rapidly than other auto-matic cells of the heart.
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tdubb1992tdubb1992
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6 years ago
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Jbev757 Author
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6 years ago
Good timing, thanks!
mmmm_dat_userna
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Yesterday
This helped my grade so much Perfect
mambah4
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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