29-1 Communication.ppt

PowerPoint PresentationKEY CONCEPT
The nervous system and the endocrine system provide the means by which organ systems communicate.
29.1 How Organ Systems Communicate
What does communication mean?
a process by which information is exchanged between individuals through a common system of symbols, signs, or behavior
29.1 How Organ Systems Communicate
I. Communication in the body
The body’s communication systems help maintain homeostasis – remember that??
Homeostasis is when the body maintains an internal set of conditions to KEEP YOU ALIVE!
29.1 How Organ Systems Communicate
a. How your body communicates:
1. A stimulus causes a response
Responses can be chemical, cellular, or behavioral
2. The nervous and endocrine systems respond to stimuli
Example:
3. The nervous system controls thoughts, movement, and emotion
4. The endocrine system controls growth, development, and digestion
29.1 How Organ Systems Communicate
II. Different methods of communication
The nervous system works quickly, using chemical and electrical signals
interconnected network of cells
signals move through cells
divided into central nervous system (CNS) and peripheral nervous system (PNS)
spinal chord
The endocrine system works more slowly
only chemical signals