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The Brain

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richard hellyar

on 26 September 2017

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Transcript of The Brain

The Brain
&
Spinal Chord

R. Hellyar
Brain + spinal chord = Central Nervous
System
Complex system involved in everything we do
86,000,000,000
Neurones
(Journal of Comparative Neurology, 2009)
At birth 350-400g
Adult 1300-1400g
Difference in size and structure between sexes.
Ruigrol, et al 2013
Little or no correlation with intelligence.


3 main components: Hind, Mid, Forebrain.
Lizard Brain
(rhombencephalon)
What do you think the functions of the hindbrain are?
Think primitive!
Midbrain
(mesencephalon)


Vision
Hearing
Fine motor control
Sleep/wake patterns
Arousal
Temperature regulation
Most complex thing
in the Universe!
Forebrain!
Mostly Cerebrum:
Largest part of the brain.
Grey tissue-cortex.
2 halves connected by the by the corpus callosum
4 sub-divisons.
Higher functions.

Stucture-Gyri and Sulci
Grey matter & White matter
The spinal chord
Questions for you to
consider:

Revise the anatomy in a bit more detail.
Broca and Wernicke's areas control language, what about the other centres?


Sits within the skull.


Surrounded by
the meninges.
Bathed in CSF (Cerebrospinal Fluid)
Lets start at the beginning, our brains had to come from somewhere!
Start from the top!
Lateralization-left and right have different functions.

Specialised areas

Underneath
Thalamus and hypothalamus
Brainstem
Originates from the foramen magnum
Spinal cord and nerves
Long thin tube of nerve tissue which runs (much of the way) down through the vertebral column.

Roughly about 45 cm long in an adult.

Extends down from the FM to between 1st and 2nd lumber vertebrae.

Protected by the vertebral column.

Can be described as having 3 main parts.
3 main sections
31 pairs of nerves
Nerves which branch off to peripheral.
C1-C7 (Cervical) vertebrae
T1-T12 (Thoracic)
L1-L5 (Lumbar)
Sacral area
Spine Cross Section
Read around CNS
Familiarise yourself with the Anatomy and Physiology
Think, how does this relate to my patients, service users, clients, women.
By the end of this session:

A basic understanding of the gross anatomy
of the brain and function.

An overview of the anatomy of the spine.

You'll start thinking how is normal A&P
affected in illness and injury?
5mins
SAME
(& optic nerves)
What are the functions of CSF?
Examine the skull, look at the landmarks.
(prosencephalon)
Basal ganglia
Autonomic
Limbic system
Colours?
Vounteers?
Full transcript