Co-ordination through Nervous System: -
i) Sensory organs (receptors) receive stimuli form environment. i.e. ears
receive sounds.
ii) Sensory organs (receptors) send this information to brain or spinal cord
through neurons (sensory nerves).
iii) Brain or spinal cord sends messages through the motor nerves for action
made by effectors.
Co-ordination Through Endocrine System: -
i) Sensory organs (receptors) receive stimuli (external or internal).
ii) Sensory organs (receptors) send this information to the endocrine glands
through blood.
iii) Endocrine glands secrete hormones, which are put into blood and
transported to special organs called target organs or target sites.
iv) Target organs or sites produce response.