Answer:
Pancreas
Step-by-step explanation:
The endocrine system is made of glands that make and segregate hormones along the body.
The glands that are part of the endocrine system are:
- hypothalamus,
- pituitary,
- thyroid,
- parathyroids,
- adrenals,
- pineal body,
- reproductive organs (ovaries and testes)
- pancreas
The gland that regulates the level of sugar in blood is the pancreas, that's why diabetes type I occurs when the pancreas is not able to segregate insulin.
Therefore, the part of the endocrine system that regulates the level of sugar in the blood is the pancreas.