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Understanding the Mysteries of the Human Brain

Explore the intricate structures and functions of the human brain, from its protective coverings to the evolution of its different regions. Learn about the brainstem, thalamus, cerebrum, and more, including the fascinating cerebral lobes and the limbic system. Discover the complexity and wonders of the brain through detailed explanations and diagrams.

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Understanding the Mysteries of the Human Brain

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  1. If the human brain were so simple that we could understand it, we would be so simple that we couldn’t…..

  2. Google Image Result for http://www.uwm.edu/~tking/b109.gif

  3. General Anatomy • Encased in meninges • Tough, fibrous protective covering • Ventricles & central canal • Cavities in brain & spinal cord • Contain cerebrospinal fluid to protect, cushion, & nourish brain & spinal cord

  4. Brain Development & Evolution • Develops from anterior bulges of early nerve cord • Hindbrain contains more primitive brain(brainstem), forebrain contains more advanced brain (cerebrum) • Cerebrum will form left & right hemispheres • Major regions present in humans at 1 month

  5. Brainstem • General function-homeostasis (involuntary functions), coordination, transmit info between “higher” brain& spinal cord • 4 regions: • Medulla oblongata & pons-breathing, heart rate, swallowing, digestion, etc • Midbrain-receives & processes sensory info, esp. auditory & visual • Cerebellum-large scale body movement, balance, position of body parts, hand-eye coordination • Reticular formation-regulates sleep & arousal • Filtering system

  6. Thalamus • Receives majority of sensory info, relays to proper part of cerebrum • Relays signals between cerebrum & motor neurons • Regulates emotion • Hypothalamus • Homeostatic regulation • Controls pituitary gland which controls hunger, thirst, temp., fight or flight • Circadian rhythms, rage, pleasure • Both are a part of limbic system

  7. cerebrum • Most highly developed part of brain • Responsible for cognitive functions • Reasoning, learning, self-awareness • Convolutions increase surface area-more is better! • Right & left hemispheres • Connected by corpus callosum

  8. Cerebral Lobes

  9. Left Brain Speech Language comprehension Calculations Logical thought Problem solving Right Brain Perceptual & spatial capabilities Recognition of objects & routes Musical/artistic ability Emotions creativity Lateralization of Function right brain controls left side of body & vice versa

  10. Limbic System • Seat of emotions • Contains centers for memory • Hippocampus & amygdala

  11. Sheep Brain

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