CHEMICAL COORDINATION IN
ANIMALS
,• Coordination in animals is brought
about by the secretions of endocrine
glands.
• Endocrine glands secrete the chemical
substances which act as messenger
called hormones directly into the blood.
,• An organ which responds to such a
hormone is known as target organ.
, Characteristics of Hormones
• They are the secretions of endocrine
glands.
• They are produced at a place and act on
target organs which are away from their
source.
ANIMALS
,• Coordination in animals is brought
about by the secretions of endocrine
glands.
• Endocrine glands secrete the chemical
substances which act as messenger
called hormones directly into the blood.
,• An organ which responds to such a
hormone is known as target organ.
, Characteristics of Hormones
• They are the secretions of endocrine
glands.
• They are produced at a place and act on
target organs which are away from their
source.
