WE ALL HAVE UNIQUE BRAINS

Cranial Nerves

CNs: I, II, III and IV

 

Pic: http://images.radiopaedia.org/images/600/d678d4ae900cd8345625e3e0a42023.jpg

Pic: http://images.radiopaedia.org/images/600/d678d4ae900cd8345625e3e0a42023.jpg

 

This page addresses cranial nerves I through IV, and they include the following:

  • I: Olfactory Nerve
  • II: Optic Nerve
  • III: Oculomotor Nerve
  • IV: Trochelar Nerve

 

 

 

Nose

Pic: http://www.planet-science.com/umbraco/ImageGen.ashx?image=/media/65658/nose_78158080.jpg&width=600&constrain=true

I: Olfactory Nerve

  • Type: Sensory Nerve
  • Origin: Cerebrum
  • Function: Sends information regarding your sense of smell from your nose to the olfactory complex in your brain.

 

 

 

II: Optic Nerve

  • Type: Sensory Nerve
  • Origin: Retina
  • Function: Transfers information regarding your sense of sight to your brain. Note: the information regarding sight arrives upside down and it is the brain which flips them up the correct way.
Pic: http://www.dryeye.com.au/img/hero-eye.jpg

Pic: http://www.dryeye.com.au/img/hero-eye.jpg

 

III: Oculomotor Nerve

  • Type: Sensory Nerve
  • Origin: Midbrain (front area)
  • Function: Triggers movement within the eye muscles

 

 

IV: Trochelar Nerve

  • Type: Motor Nerve
  • Origin Midbrain (back area)
  • Function: Is involved in the upward and downward movements and rolling of the eye.