Body Region: Head & Skull

  • April 28, 2026
    The vagus nerve is the longest cranial nerve, providing parasympathetic innervation to most thoracic and abdominal viscera and motor supply…
  • April 28, 2026
    The hypoglossal nerve is the motor nerve to the tongue, with unilateral palsy producing tongue deviation toward the weak side…
  • April 28, 2026
    The accessory nerve has two functional components: the cranial part joins the vagus for laryngeal innervation, and the spinal part…
  • April 28, 2026
    The five terminal branches of the facial nerve supply all muscles of facial expression. The marginal mandibular branch is the…
  • April 28, 2026
    The trigeminal nerve is the largest cranial nerve, providing sensation to the entire face and motor supply to the muscles…
  • April 28, 2026
    CN III is the primary ocular motor nerve, supplying four of the six extraocular muscles plus the levator palpebrae and…
  • April 28, 2026
    The greater occipital nerve is the primary sensory supply to the posterior scalp and the most common target for occipital…
  • April 28, 2026
    The lesser occipital nerve provides sensory supply to the lateral occipital scalp and the area behind the ear. It is…
  • April 28, 2026
    The third occipital nerve (TON) is the medial branch of C3 that wraps around and innervates the C2-C3 zygapophyseal joint…
  • April 28, 2026
    The inferior pharyngeal constrictor has two functionally distinct parts. The thyropharyngeus constricts the hypopharynx during swallowing. The cricopharyngeus is the…

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