Physiology 2130 Lecture Notes - Lecture 1: Cerebrospinal Fluid, Coccyx, Occipital Lobe
27 Sep 2016
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Views of the brain: dorsal- top, ventral- bottom, lateral- side, medial (midline)- cut half and look from interior perspective/ inside. Plane trough the brain: midsagittal (sagittal- not in the middle, horizontal, coronal. Major parts of central nervous system (cns: cerebrum. Two cerebral hemispheres divided by the sagittal fissure (midline) Concerned with contralateral sensation & movement: cerebellum. Sensory physiology- nervous system overview: brain stem. Concerned with life functions- respiration, body temperature: spinal cord. Conduit for information to and from the brain. Retina (part of your brain, directly grow from your brain and grows before the brain) 31 segments, 62 spinal nerves (one left, one right) Each spinal nerve: dorsal root (sensory) and ventral root (motor) 5 regions: cervical- 8, thoracic- 12, lumbar- 5, sacral- 5, coccygeal- 1. Each segment receives sensory input from a particular region of the body and supplies motor input to a similar region. On the skin surface, the sensory region is called dermatome.
