Physiology 2130 Lecture Notes - Lecture 3: Central Nervous System, Primary Motor Cortex, Visual Acuity
20 Feb 2017
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Describe the divisions of the nervous system. Understand the general organization of the spinal cord. Know the divisions and functions of the peripheral nervous system. Understand the functional differences between cranial and spinal nerves. Know the relationship of the meninges to the cns. Understand the basic structure of the ventricular system. Know the lobes of the cerebral cortex and its general functional organization. Central nervous system (cns) encased in bone. 2 cerebral hemispheres divided by sagittal fissure (midline) Concerned with ipsilateral motor control: brain stem. Concerned with life functions (respiration, body temperature) Conduit of information to and from the brain. Sensory and motor losses following section: 31 segments, each segment has a left & right spinal nerve, each spinal nerve consists of: Dorsal root receives sensory input from outside. Ventral root supplies motor output to outside: cervical 8 thoracic 12. Somatic system voluntary system: spinal nerve, dorsa nerve ganglia. Visceral system (autonomic nervous system) involuntary system: parasympathetic, sympathetic.
