Cranial nerves

• emerge directly from the brain and carry impulses

  to and from the brain. These nerves control movements of the eyes, face, neck, and mouth along with the senses of taste and hearing

  Cranial nerves
• what does cranial nerves have?

  sensory, somatic motor and autonomic motor functions
• sensorry: sense of smell

  I. Olfactory
• Sensory: sense of vision

  II. Optic
• motor: eye movement, pupil size, lens shape

  III. Oculomotor
• motor: eye movement

  IV. Trochlear
• sensory: sensation of the head and face including eyes and oral activity

  motor: middle ear muscle, mastication muscle for cherwing, palatine muscle and throat muscle;

  V. Trigeminal
• motor: eye movement hint: CN6

  VI. Abducens
• sensory: sense of taste in the anterior 2/3 tongue

  motor: facial expressions, submandibular and sublingual salivary glands of the mouth, lacrimal glands of the eye

  VII. Facial
• sensory: sense of hearing and balance

  VIII. Vestibulocochlear
• Sensory: sense of taste in the posterior 1/3 of the tongue, tactile sensation of posterior tongue, middle ear, pharynx, sensory receptors from carotid arteries that monitor BP, blood pH, oxygen and carbon dioxide levels

  motor: swallowing, parotid salivary glands

  IX. Glossopharyngeal
• sensory: sensation in the larynx, neck, thorax, abdominal

  organs, sensory receptors in the aortic arch that monitor BP, blood pH, oxygen and carbon dioxide levels

  motor: muscles of palate, pharynx, larynx, lungs, kidneys, heart rate and digestion

  X. Vagus
• motor: head and shoulder movement

  XI. Accessory
• motor: tongue movement

  XII. Hypoglossal