today’s objectives… identify and discuss the two main parts of the nervous system. explain how...
TRANSCRIPT
Today’s objectives… Identify and discuss the two main parts of
the nervous system. Explain how the nervous system functions as
the central control system of the body. Identify factors that may lead to disorders of
the nervous system.
The Nervous System
The Nervous System The Body’s Control Center
The nervous system carries messages to and from the brain.
It controls senses, thoughts, movements and bodily functions.
The cells that make up the nervous system. Send and receive information in the form of
electrical charges. There are 3 types of neurons
Sensory, Interneurons and Motor
Neurons
Neurotransmitters Seratonin –mood, appetite
and memory. Dopamine- pleasure and
pain. Melatonin- sleep Norepinephrine- alertness
and learning. Epinephrine- also known as
adrenaline, gets your body up and moving
Endorphins- fights pain and stress, related to exercise, give you a good feeling.
Cortisol- stress
Chemicals that help transmit signals from neuron to neuron
Nervous System Parts
Central Nervous System or CNS consists of the brain and the spinal cord.
Brain is the command center- controls most body functions.
Just the Brain Facts! Spinal Cord is a long
bundle of neurons that relays messages btwn CNS and PNS
Peripheral Nervous System (PNS)
means “located away from the center”
Nerves that connect CNS to all parts of the body.
PNS carries messages to the CNS.
Two parts- somatic and autonomic.
The Nervous System PartsContinued…
How's your short term memory?
Alcohol Use
Drug Abuse Infections
Disorders
Injuries
Problems of theNervousSystem
How can we protect our nervous system?
A spinal cord injury occurs every 49 seconds in the US.
How could your life be affected if you suffered permanent damage to the system that controls your thought processes, your movement, your heartbeat and your digestion? Give three specific reasons to support your answer.
QUIZ
The following slides contain a series of optical illusions that will attempt to trick or stump your senses!
Follow the directions Miss Allison gives you to get the FULL effect!
The Nervous System and it’s tricks
What do you see here?
A beautiful woman or an elderly woman?
