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13.7 Structure and function of the brain

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More complex video, with more detailed information

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More complex video, with more detailed information

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https://www.youtube.com/watch?v=kMKc8nfPATI

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https://www.youtube.com/watch?v=0-8PvNOdByc

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National Institute on Drug Abuse (NIDA/NIH)

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The Human Brain: Major Structures and Functions

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Good website for different diagrams of where to find important structures in the brain

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Good website for different diagrams of where to find important structures in the brain

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https://www.aviva.co.uk/health-insurance/home-of-health/medical-centre/medical-encyclopedia/entry/structure-and-function-brain-spinal-cord-and-nerves/

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The brain contains more than 100 billion neurons and weighs about 1.4 kg (3 lb). The brain and spinal cord contain two main types of tissue: grey matter, which originates and processes nerve impulses; and white matter, which transmits them. The largest structure in the brain is the cerebrum, which is divided into two halves or hemispheres. Other structures include the cerebellum, the brain stem, and a central region that includes the thalamus and hypothalamus. The spinal cord is an extension of the brain stem and continues downwards from the base of the skull.

Spinal nerves

Thirty-one pairs of spinal nerves emerge from the spinal cord and extend through the protective, bony spinal column. These nerves divide to supply all parts of the trunk and the limbs. Before reaching the limbs, bundles of nerves converge to form braid-like plexuses, called the brachial and lumbar plexuses, which then branch further along.

Structure of the spinal cord

The spinal cord has a core of grey matter containing nerve cell bodies, dendrites, and supporting cells. Surrounding the grey matter is white matter containing columns of nerve fibres that carry signals to and from the brain along the length of the spinal cord.
From the 2010 revision of the Complete Home Medical Guide © Dorling Kindersley Limited. The subjects, conditions and treatments covered in this encyclopaedia are for information only and may not be covered by your insurance product should you make a claim.

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Structure and Function: Brain, Spinal Cord, and Nerves

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The brain contains more than 100 billion neurons and weighs about 1.4 kg (3 lb). The brain and spinal cord contain two main types of tissue: grey matter, which originates and processes nerve impulses; and white matter, which transmits them. The largest structure in the brain is the cerebrum, which is divided into two halves or hemispheres.