1. By:Siena Vaccara, Stephanie Ologan, Griffin Kapelus, Cassidy Drummond
The Nervous System
By:Siena Vaccara, Stephanie Ologan, Griffin Kapelus, Cassidy Drummond

2. What Will Be Discussed 1. The Central Nervous System
2. The Autonomic Nervous System
3. The Sensory Nervous System
4. Neurons

3. The Central Nervous System (The Big Idea)
-Brain
-Spinal Cord
-These two organs are responsible for sending information to the peripheral/sensory nervous system. They also receive and interpret information.
The Brain:
Forebrain (Responsible for processing information)
-Understanding
-Language
-Thinking
-Motor functions (Thalamus and Hypothalamus)
ogy-animations.blogspot.com/2008/01/nervous-system-animation.html
The Spinal Cord:
-The spinal cord is in charge of sending/transporting nerve impulses to the brain. The spinal cord is also used to help coordinate reflexes.
Damage:
-Brain Tumors
-Strokes
-Paralysis

4. Autonomic Nervous System
Sympathetic Nervous System:
· Dilates the pupil, increases sweating, heart rate, and blood pressure in situations of danger or fright
·Sympathetic ganglia are more distant from their target organs
Parasympathetic Nervous System:
·conserves energy by slowing the heart rate, increasing intestinal and gland activity, and relaxing muscles in the gastrointestinal tract
·Parasympathetic ganglia tend to lie close to organs or tissues
What they both consist of?
· Formed by two connected sets of neurons. (The first set are the preganglionic neurons from the brainstem or spinal cord. The second set are the postganglionic neurons that lie outside the central nervous system)
· sensory fibers that send feedback information into the central nervous system

5. Sensory Nervous System
-The sensory nervous system is part of the peripheral nervous system
-Senses: sight, hearing, taste, touch, smell
-Sensory neurons pick up the stimuli, and they activate your motor neurons
-Sensory neurons send info to the central nervous system
-Can pick up information from external stimuli or internal organs and send to central nervous system
-Converts information from environment into electrical impulses which travel through sensory neurons
-Modality: A type of physical phenomenon that can be sensed
-Intensity
-Location
-Duration
Types:
• Chemosensor: detects certain chemical stimuli in the environment.
• Mechanoreceptor: responds to mechanical pressure or distortion
• Nociceptor: responds to potentially damaging stimuli, causes the perception of pain.
• Photoreceptor: convert light into signals that can stimulate biological processes
• Thermoreceptor: codes absolute and relative changes in temperature

6. Neurons •Neurons are nerve cells which send
actions/commands through an electrochemical process •Neurons have the basic cellular processes such as protein synthesis and energy production. They also have cytoplasm, mitochondria and other organelles just like regular cells. •Neurons are specialized cell -They have different parts called dendrites and axons that regular cells don’t have •Dendrites bring electrical signals to the cell body •Axons take information away from the cell body •Neurons communicate with each other through an electrochemical process
Electrochemical Process Animation

7. What Can Go Wrong
-Brain Trauma
-Stroke
-Seizures
-Memory and Cognitive Disorders (Alzheimer's Disease, Dimentia)
-Paralysis

8. Now For A Worksheet!
You have 15 minutes. Go!