Chapter 13

Nervous System Central: Peripheral: Brain and spinal chord Cranial, and spinal nerves, ganglia

Autonomic System Maintains homeostasis Part of peripheral 2 parts Sympathetic Provides energy, and stress response “fight or flight” Parasympathetic Returns body to normal after stress, maintains normal body function

Neuron Types Sensory: Associative: Motor: Carry sensory impulses towards CNS Associative: Carry info from one neuron to another Motor: Carry impulses away from CNS

Neuron Anatomy

Brain Anatomy

Cranial Nerves Olfactory, optic, oculomotor, trochlear, trigeminal, abducent, facial, acoustic, glossopharyngeal, vagus, Accessory, hypoglossal

Spinal Chord

Common Ailments Ataxia: no coordination Concussion: shaking of the brain -> leads to further injury Hemiplegia: paralysis of one side Macro/Micro-cephlagy: too large, too small skull Meningitis: inflammation of the meninges (brain)

Common Procedures Anesthesia: substance given to prevent pain. Without pain Neurectomy: removal of nerves Neuroplasty: surgical repair of a nerve “Tap”- removal of fluid for study and culture Pupillary light reflex: response of pupil to bright light source: shows neuro damage

Activities Chapter Review Depict a neuron: Label the parts and what they do Explain how a message is carried to the brain from a limb What are the levels of consciousness? Define each. Give one example of a disease or “problem” that would cause each Copy figure 13-1 for your notes. Explain what is happening/ what it depicts