OnlineCBT Logo OnlineCBT

Biology · PYQ NEET UG 2019(2)

हिन्दी

All the components of the nodal tissue are auto-excitable. Why does the SA node act as the normal pacemaker?

  1. SA node has the highest rate of depolarisation.
  2. SA node has the lowest rate of depolarisation.
  3. SA node is the only component to generate the threshold potential.
  4. Only SA node can convey the action potential to the other components.

Correct answer · Option 1

SA node has the highest rate of depolarisation.

Explanation

The SA node generates action potentials at the highest frequency among all nodal tissues, thus setting the pace as the natural pacemaker.
पता संपर्क करें

+91 7877547686

ई-मेल

onlinecbtportal@gmail.com

हेल्पलाइन नंबर

+91 7877547686


डाउनलोड करने के लिए क्लिक करें
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

WhatsApp Chat