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Introduction to the cranial nerves
Cranial nerve pathways
Anatomy of the trigeminal nerve (CN V)
Anatomy of the facial nerve (CN VII)
Anatomy of the glossopharyngeal nerve (CN IX)
Anatomy of the vagus nerve (CN X)
Anatomy of the spinal accessory (CN XI) and hypoglossal (CN XII) nerves
Anatomy clinical correlates: Trigeminal nerve (CN V)
Anatomy clinical correlates: Facial (CN VII) and vestibulocochlear (CN VIII) nerves
Anatomy clinical correlates: Glossopharyngeal (CN IX), vagus (X), spinal accessory (CN XI) and hypoglossal (CN XII) nerves
Anatomy of the cranial base
Anatomy of the external and middle ear
Anatomy of the infratemporal fossa
Anatomy of the nose and paranasal sinuses
Anatomy of the oral cavity
Anatomy of the oral cavity (dentistry)
Anatomy of the pterygopalatine (sphenopalatine) fossa
Anatomy of the salivary glands
Anatomy of the temporomandibular joint and muscles of mastication
Anatomy of the tongue
Bones of the cranium
Blood and nerve supply of the oral cavity
Muscles of the face and scalp
Nerves and vessels of the face and scalp
Anatomy clinical correlates: Skull, face and scalp
Anatomy clinical correlates: Temporal regions, oral cavity and nose
Anatomy of the larynx and trachea
Anatomy of the lymphatics of the neck
Anatomy of the pharynx and esophagus
Anatomy of the thyroid and parathyroid glands
Bones of the neck
Deep structures of the neck: Prevertebral muscles
Deep structures of the neck: Root of the neck
Fascia and spaces of the neck
Superficial structures of the neck: Anterior triangle
Superficial structures of the neck: Cervical plexus
Superficial structures of the neck: Posterior triangle
Anatomy clinical correlates: Bones, fascia and muscles of the neck
Anatomy clinical correlates: Vessels, nerves and lymphatics of the neck
Anatomy clinical correlates: Viscera of the neck
The oral cavity or mouth, though quite small, is supplied by a dense network of nerves and blood vessels.
The nerve supply comes from the branches of six cranial nerves, namely - the trigeminal nerve, facial nerve, glossopharyngeal nerve, vagus nerve, and the hypoglossal nerve, whereas the blood supply comes from the branches of the external carotid artery and the veins drain into the internal and external jugular veins.
First off, let's start with the arteries.
The arterial supply comes from the external carotid artery branches - the lingual artery, facial artery, and the maxillary artery.
The lingual artery is the second branch of the external carotid artery and arises at the level of the greater cornu of the hyoid bone.
It runs upwards and medially till it reaches the greater cornu and then dips downwards, beneath the posterior belly of digastric and stylohyoid muscles, creating a loop over the hypoglossal nerve.
The lingual artery then ascends almost vertically upwards to reach the tongue's inferior surface and continues as its terminal branch, the deep lingual artery, which supplies the anterior two-thirds of the tongue.
The oral cavity is the first part of the digestive system and is responsible for breaking down food so that it can be digested. The oral cavity is lined with mucous membranes and contains teeth, the tongue, and the salivary glands. The oral cavity and its components receive the blood supply from the facial, the lingual, and the maxillary branches of the external carotid artery. The venous drainage of the oral cavity accompanies its arterial supply, finally draining into the external and internal jugular veins. The lymphatic drainage of the oral cavity drains into the submental, submandibular, and deep cervical lymph nodes. The nerves of the oral cavity include the trigeminal nerve (CN V), facial nerve (CN VII), glossopharyngeal nerve (CN IX), vagus nerve (CN X), and hypoglossal nerve (CN XII).
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