Endocrine System

What is the Endocrine system?

• It is a collection of glands that secrete chemical messages called hormones.
• Gland: A gland is a group of cells that produces and secretes, or gives off, chemicals.
• Hormone: are chemicals that regulate or controls the activity of certain cells or organs
• The nervous system sends electrical messages to control and coordinate the body.
• The endocrine system has a similar job, but uses chemicals to “communicate”
• Endocrine system works more slowly than the Nervous system
• Hormones are released from glands/cells into the blood vessels They travel to target organs, where they cause a change 

Endocrine vs Nervous system

• The nervous system sends electrical messages to control and coordinate the body.
• The endocrine system has a similar job, but uses chemicals to “communicate”
• Endocrine system works more slowly than the Nervous system
• Response of Nervous system is short lived, while response of Endocrine system may be short or long lived
• Hormones are released from glands/cells into the blood vessels
• They travel to target organs, where they cause a change