Brain Anatomy and Function
The brain is divided into REGIONS that specialize in different functions. Major parts. CEREBRUM (the big wrinkly outer part): conscious thought, voluntary movement, sensory processing. CEREBELLUM (the smaller "little brain" at the back): coordination, balance, motor learning. BRAIN STEM: heart rate, breathing, sleep cycles — automatic functions essential to life.
The cerebrum has four LOBES. FRONTAL: planning, decision-making, personality, voluntary movement. PARIETAL: touch, spatial awareness, math. TEMPORAL: hearing, language understanding, memory (the hippocampus, deep inside). OCCIPITAL: vision. Each side of the brain (left and right HEMISPHERES) handles different aspects — the left does language and logic for most people; the right handles spatial reasoning and emotion processing.
Damage to the OCCIPITAL lobe (back of the brain) most likely affects:
Inside the brain. HIPPOCAMPUS: forms new memories. AMYGDALA: emotions, especially fear. THALAMUS: relays sensory info to the cortex. HYPOTHALAMUS: hormones, hunger, body temperature. BASAL GANGLIA: motor learning and habit formation. These deeper structures are evolutionarily older than the cortex — many are similar to those of other mammals. The cortex (especially the frontal lobe) is where humans really stand out.
Map the Brain
Sketch the brain. Label the four lobes (frontal, parietal, temporal, occipital) and the cerebellum. For each, write one function it handles. This basic map will help you understand brain news for years to come.
Knowing brain anatomy lets you understand how strokes affect different abilities, why some injuries change personality, and how learning works at a system level. The map is the start of the territory.
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