Nervous system

Nervous system

1. Central Nervous system

   • Encephalon: upper part
     • Brain
     • Cerebellum: cordination &body movement
     • Thalamus: picks up sensorial info and sends it to cerebral cortex
     • Hypothalamus: Regulates the medium hemostasis functions
     • Cerebral cortex
       • SUPERIOR FUNCTIONS: Conscious perception, Reasoning & memory,
       • SENSORIAL PERCEPTION: Somatosensorial, Audition, Vission
       • MOTOR CORTEX: Voluntary movements
     • Brainstem: controls essential functions
   • Spinal cord
     • Runs along dorsal part of the body
     • Receives and transports the ascendant and descendant information.
     • Receives all sensorial information that is given from all parts of the body; works as a highway
     • Controls two different types of movements, simple and fast movements which are called as defense reflex

2. Peripheral nervous system

   • Connects the Central Nervous System with the limbs and organs
     • Sensory: Afferent neurons that relay nerve impulses TOWARDS the central nervous system.
       • Autonomic: regulates involuntary actions
         • Sympathetic
           • Dominates in stressful or emergency situations
           • Makes heart beat faster
         • Parasympathetic
           • Relaxes the organism
           • Controls respiration, heartbeat and other vital functions
       • Somatic: governs voluntary actions and the body reflexes
     • Motor: Efferent neurons that relay nerve impulses AWAY from the central nervous system.