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The Brain
Organization of the Brain
| Term | Definition |
|---|---|
| Cerebrum | Largest and most superior portion of the brain, divided into 2 hemispheres, each subdivided into lopes; Cortex (outer layer) is for memory, thought, reasoning, perception |
| Diencephalon | Between the cerebrum and the brain stem; contains the thalamus (sorts and redirects sensory input) and hypothalamus (maintains homeostasis) controls ANS and pituitary gland |
| Brain stem | anterior region below the cerebrum, connects cerebrum and diencephalon with spinal cord. |
| Midbrain | Below the center of the cerebrum, has reflex centers concerned with vision and hearing, connects cerebrum with lower portions of the brain |
| Pons | Anterior to the cerebellum, connects cerebellum with other portions of the brain, helps regulate respiration |
| Medulla Oblongata | Between the pons and the spinal cord, links the brain with the spinal cord, controls respiration and heartbeat |
| Cerebellum | Below the posterior portion of the cerebrum, divided into 2 hemispheres, coordinates voluntary muscles, and maintains balance and muscle tone |