Chemical Coordination and integration Class 11 Notes
Class 11 Biology Chapter 22 Chemical Coordination and integration Notes - PDF Download
Chemical Coordination and integration Class 11 Notes are cumulated by our panel of highly experienced teachers to provide the students with effective exam preparation. The pdf includes the summary of the chapter, important points to remember and detailed explanation of important concepts and derivations for better understanding and retaining of the chapter. Going through these Chemical Coordination and integration Class 11 Notes would easily help students to grasp challenging concepts which would ultimately lead them to score maximum marks in their exams.
Understanding Chemical Coordination and integration.
Hormones are secreted by endocrine gland (biogenic in origin). Their secretions is released directly into blood (except local hormones e.g. gastrin). These are carried to distantly locate specific organs, called target organ. These have specific physiological action (excitatory or inhibatory). These co-ordinate different physical, mental and metabolic activities and maintain homeostasis. The hormones have low molecular weight e.g. ADH has a molecular weight of 600–2000 daltons. These act in very low concentration e.g. Around 10–10 molar.
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