Parts of the brain. Protection Not really part but… The brain is well protected Bony skull 3 protective sheets of tissue Space in the brain is filled.

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Presentation transcript:

Parts of the brain

Protection Not really part but… The brain is well protected Bony skull 3 protective sheets of tissue Space in the brain is filled with fluid: –Cerebrospinal fluid (CSF) –Acts as a shock absorber

A brain of two halves Left hemisphere and right hemisphere They are joined by the corpus callosum Made up of axons of neurons that communicate information between hemispheres

Wrinkles Cerebral cortex forms the outer layer of the forebrain It appears wrinkled as it is folded Folding allows more outer cortex to be fitted into a smaller space A groove is called a sulcus Between grooves is a gyrus

Major parts

Brain stem Mid brain: Nerve pathway of cerebral hemispheres/Auditory and Visual reflex centers Pons: Respiratory Center Medulla Oblongata: Crossing of motor tracts/Cardiac Center/Respiratory Center

Cerebellum – Plays a role in commands for motor action Organization of action including language production Integrates information from external and internal sources Toates p119 Major parts

Occipital lobe: visual perception system E.g., visuospatial processing, discrimination of movement and colour discrimination Lesions can cause visual hallucinations

Major parts Parietal lobe – Several portions are important in language processing Also, somatosensation: touch, pain, temperature sense, and limb proprioception (limb position)

Major parts Frontal lobe – emotional control centre and home to our personality Motor function, problem solving, spontaneity, memory, language, initiation, judgement, impulse control, and social and sexual behaviour Effects of frontal damage can be a dramatic change in social behaviour

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