AP Psychology Unit 2:
The Biological Bases of Behavior
(Modules 4-7)
The Nervous and Endocrine
Systems
(Module 4)
Objectives:
•
•
Describe the nervous systems and its
subdivisions and functions
Discuss the effect of the endocrine
system on behavior
The Nervous System
The Nervous System
The Nervous System
The Nervous System
The Nervous System
The Nervous System
The Nervous System
The Autonomic Nervous System



Fight-or-flight
response
Sympathetic: Arouses
Parasympathetic:
Calms
Central Nervous System
Brain
Spinal Cord
Central Nervous System (CNS)

Brain
–
–
–
–

Enables all functioning
Billions of neurons and their connections
These neurons work together in neural networks to facilitate
efficient output.
As we learn, these networks strengthen
Spinal Cord
–
–
Connects brain to PNS
Handles reflexes
The Endocrine System




Helps coordinate and
integrate complex
psychological reactions
Endocrine glands secrete
hormones into the
bloodstream
Hormones serve to organize
the nervous system and body
Hormones also activate
behavior, such as sexual
behavior, hunger and
aggression