Insulin is produced by specialized endocrine cells of the…a) liver.b) pancreas.c) heart.d) brain.

Identifying the Correct Answer

1. Understanding Insulin Production

   • Insulin is a hormone that plays a crucial role in glucose metabolism and regulation of blood sugar levels.

2. Exploring the Options

   • a) Liver: While the liver plays a role in glucose metabolism (storing glucose as glycogen) and responding to insulin, it does not produce insulin.
   • b) Pancreas: The pancreas contains specialized endocrine cells known as beta cells that produce insulin.
   • c) Heart: The heart is primarily responsible for pumping blood and does not produce insulin.
   • d) Brain: The brain is involved in various functions and may respond to insulin but does not produce it.

3. Conclusion

   • The specialized endocrine cells producing insulin are located in the pancreas.

Final Answer

b) pancreas.