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An Introduction to Your Nervous System

Your nervous system is the sum of many parts. At the center of it all sits your brain, a powerhouse containing billions of nerve cells that fire off complex electrical messages to keep your body safe and healthy as best they can. Your spinal cord runs the length of your back, and connects your peripheral nervous system—the collections of nerve cells around your body—to your brain, ensuring that your entire nervous network is hooked up to the grid.

It’s incredibly important, and incredibly complex. Without a functioning nervous system, you would struggle to do most things—which is why injuries to the spinal cord or brain can be so serious. From the photoreceptors in your eyes, to the neurons in your prefrontal cortex, every day your nervous system does everything it can to help you survive and thrive.

Playlist by
Tom Pritchard

Types of neurotransmitter receptors

06:36

Types of neurotransmitter receptors

from Khan Academy

NOTE: All Khan Academy content is available for free at www.khanacademy.org.

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Overview of neuron function

4 of 9

07:59

Overview of neuron function

from Khan Academy

NOTE: All Khan Academy content is available for free at www.khanacademy.org.

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Autonomic Nervous System Effects on the Heart

5 of 9

06:16

Autonomic Nervous System Effects on the Heart

from Khan Academy

NOTE: All Khan Academy content is available for free at www.khanacademy.org.

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The Nervous System - CrashCourse Biology #26

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12:04
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Brain: The Inside Story's "Your Sensing Brain"

7 of 9

02:12
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The Anatomy of Human Eyes : Biology & DNA

8 of 9

02:54
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How the Body Works : The Anatomy of the Central Nervous Syst

9 of 9

00:57
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Divisions of the Nervous System

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06:01
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Spinal Pathways 1 - Spinal Cord Anatomy and Organisation

11 of 9

04:11
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