Monday, 11 March 2013

Functions of Central Nervous System

Different Functions of various parts of  Central Nervous System

Central Nervous System consists of Cerebral cortex and Frontal lobes andLimbic system, Basal ganglia, Thalamus, Hypothalamus, Cerebellum, Reticular formation and Spinal Cord. Some of the fuctions of central nervous system are as follows:

Central Nervous System- Cerebral Cortex

  • Smell
  • Hearing
  • Vision
  • Fine pain
  • Tactile discrimination and temperature
  • Judgement
  • Memory
  • Fine voluntary movements
  • It Also acts as an one of the  important coordinator and exerts inhibitory control over lower centers.

Central Nervous System- Frontal lobes

  • Thinking
  • Integration of emotional behavior

Central Nervous System- Limbic system

  • It Integrates emotional state along with motor and visceral activities

Central Nervous System-Basal ganglia

  • Lesions produce tremors and rigidity in flexion.
  • Extrapyramidal control of  skeletal muscle tone
  • Co-ordination of posture.

Central Nervous System- Thalamus

  • Exerts regulatory control over visceral functions.
  • Relay center for sensory pathways to cortex.
  • Conscious appreciation of pain, temperature and crude touch sensations.

Central Nervous System- Hypothalamus

  • Important center of integration of eating, drinking, sexual behavior, temperature regulation,sleep, circadian rhythms and other vegetative functions.
  • Control of the autonomic nervous system
  • Control of adenohypophysis

Central Nervous System- Cerebellum

  • Control of vestibular function and body posture.

Central Nervous System for Reticular formation

  • Sleep-wakefulness cycle
  • Control of blood pressure
  • Respiration
  • Swallowing
  • vomiting
  • Transmission of crude pain
  • Voluntary muscle tone and posture
  • Control of upper motor neurons.

Central Nervous System- Spinal Cord

  • Reflex movements
  • Control of muscle tone 
  • The upper and the lower motor neurons through presynaptic and post-synaptic inhibition.

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