Prabin Kalikote

Hormone are the chemical messengers which control, co-ordinate and integrate the function of various organs of the body.
Its properties are:
    - It is produced by endocrine glands.
    - They are required in small amount and their effect are long lasting.
    - They are chemically proteins, steriod and amino acid.
    - They act as chemical messengers.
Its functions are:
    - It...

The system formed by a group of endocrine gland is called the endocrine system.
The differences are:

The function of sensory neurons is to carry message from receptor organ to the spinal cord.
The function of motor neuron is to carry message from the spinal cord to the effector organs.

A reflex arc is a pathway followed by the sensory and motor nerves in a reflex action.

A spontaneous, mechanical and automatic response to a stimulus controlled by the spinal cord without the involvement of the brain is called reflex action.
For eg.     Watering of mouth while seeing tasty food.

Spinal cord is a long, cylindrical structure that arises from the medulla oblongata of the brain and passes through the neural cannel of the vertebral column.
Spinal cord a found inside the boney cage of the vertebral column. It is protected by the spinal menings and cerebro spinal fluid, which cushions, the chord by acting as a shock absorber. Each vertebra has an opening on its left and right side to let spinal neve pass through. These...

The main part of hind brain are:
a.    Cerebellum:
    - It maintain equibirium and controls posture.
    - It makes body movt. smooth, steady and coordinated.
    - It regulates and coordinates voluntary muscles.
b.    Pons varolii:
    - It serves as relay station carrying signal from the cerebrum to cerebellum.
    - It regulates respiration.
...