- Books Name
- ACME SMART COACHING Biology Book
- Publication
- ACME SMART PUBLICATION
- Course
- CBSE Class 11
- Subject
- Biology
Endocrine glands and Endocrine system
Endocrine glands (Gr., endo = within + krinein = to secrete):
These glands lack ducts and pass secretions into the surrounding blood directly. Therefore they called ductless glands. e.g. – Thyroid, parathyroid, adrenal, pituitary, pineal body and thymus.
Endocrine system:
the work of co-ordination by endocrine system is slowly by secretion of some chemical substances.
Hormones are secreted in blood
Virtually all body cells
Change in metabolic rate
Seconds to hours or days generally long.