Post on 26-Dec-2015
BIOLOGY AND BEHAVIORThe Nervous System
OBJECTIVE
Explain how messages are transmitted by neurons, and describe the functions of the spinal cord and the peripheral nervous system.
TODAY’S GOALS
Activity—Dance, Label Synapse and Neuron Notes on Biological Psychology, Nervous
System, and Neurons.
BIOLOGICAL PSYCHOLOGY
http://education-portal.com/academy/lesson/intro-to-biological-psychology.html#transcript
NERVOUS SYSTEM
What does the Nervous System do? Nervous system is the body’s internal
communication system. It contains 2 main parts
The Central Nervous System The Peripheral Nervous System
NEURONS Neurons- Nerve Cells that run through our
entire bodies and communicate with each other
More than 100 billion neurons (most found in the brain)
Neurons send and receive messages from other structures in the body.
COMMUNICATION PROCESS
Messages are sent from the Axon Terminals of one neuron to the dendrites of other neurons.
Message must cross the synapse Synapse is a junction (space) between the
axon terminals of one neuron and the dendrites of another neuron
COMMUNICATION PROCESS
Sensory Neurons: nerve cells that carry info received by the senses TO the central nervous system
Motor neurons: nerve cells that carry info FROM the central nervous system to the muscles and the glands and influence their functioning.
NEUROTRANSMITTERS: CHEMICAL MESSENGERS
Neurons send messages across the synapse through the release of neurotransmitters
Neurotransmitters: Chemicals that are stored in sacs in the axon terminals
Neuron fires or sends its message by releasing neurotransmitters
http://www.youtube.com/watch?v=p5zFgT4aofA
http://education-portal.com/academy/lesson/neurons.html
CENTRAL NERVOUS SYSTEM
Consists of the Brain and the Spinal Cord The Spinal Cord transmits messages between the
brain the muscles and the glands through out the body.
Spinal Reflex: simple, automatic response to something
Ex. Hot Stove Message goes immediately from his or her hand to the spinal cord. Message toremove hand is sent back toMotor neurons in the hand to remove the hand.
PERIPHERAL NERVOUS SYSTEM
Lies outside the central nervous system and is responsible for transmitting messages between the central nervous system and all parts of the body.
2 parts of the PNS Somatic Nervous System (SNS) Autonomic Nervous System(ANS) http://
education-portal.com/academy/lesson/nervous-system.html
COLOR IN YOUR CNS, PNS, AND ANS
Color in the 3rd page of your neuron packet Write down 3 examples of Autonomic
Nervous System(ANS). Write down 3 examples of your Somatic
Nervous System (SNS).