THE HUMAN BRAIN. 3.5 pounds of gelatinous material at the root of everything we do/are.

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Presentation transcript:

THE HUMAN BRAIN

3.5 pounds of gelatinous material at the root of everything we do/are

Characterized by sulci (sulcus) and gyri (gyrus) – sulcus—valley – gyrus—peak

Divided into hemispheres—right and left—via the longitudinal fissure Cerebrum and cerebellum Cerebrum divided into four lobes

Frontal lobe—thinking and motor movement Parietal lobe—incoming sensory information Occipital lobe—vision Temporal lobe—memory and audition

Right hemisphere from the left side sulci and gyri corpus callosum thalamus hypothalamus pituitary

medulla pons cerebellum spinal cord amygdala hippocampus

Another way to talk about the brain is in terms of development. ONTONGENY RECAPITULATES PHYLOGENY HINDBRAIN MIDBRAIN FOREBRAIN

HINDBRAIN—oldest part; buried deep in brain tissue; processes vital functions; consists of the medulla, the pons and the cerebellum MIDBRAIN—next oldest; processes visual and auditory information; consists of the thalamus and other smaller structures

FOREBRAIN—newest part; cortex and limbic system structures; processes thinking, feelings and motor activity; consists of the four lobes, hypothalamus, amygdala, hippocampus and others

THERE ARE 100 TRILLION NEURONS IN THE BRAIN WHAT IS A TRILLION?

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