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Chemical Coordination and Integration — Class 11 CBSE Biology revision notes

A 4-page visual revision sheet for Chemical Coordination and Integration, written for Class 11 CBSE Biology. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.

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Chemical Coordination and Integration in one look

a hormone travels the whole body in the blood but only ever acts where a matching receptor waits

The endocrine system, chemical messengers

  • endocrine glands are ductless: they release a hormone straight into the bloodstream, not through a duct
  • a hormone travels the whole body in blood, acting only where a matching receptor waits
  • hormones are the body's second coordination system, generally slower than nerves but longer lasting

The hypothalamus and pituitary, the control axis

  • hypothalamus sits above the pituitary and secretes releasing/inhibiting hormones that turn its secretion on or off
  • the pituitary is called the master gland: several of its hormones control other glands in turn

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