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8 08, 2018

Chorda Tympani Nerve

By Dr. Joseph H Volker | 2018-08-30T10:47:00+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

It is a slim branch of facial nerve. Due to its intimate relationship to the middle ear (tympanum) it is called chorda tympani nerve. Function Parts The chorda tympani nerve includes: General visceral efferent fibres: All these are preganglionic parasympathetic (secretomotor) fibres to submandibular and sublingual salivary glands. Special visceral afferent fibres: These fibres take [...]

8 08, 2018

Supraclavicular Nerves

By Dr. Joseph H Volker | 2018-08-30T10:16:48+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

The supraclavicular nerves is a name referred to a group of cutaneous nerves originating via cervical nerves C3 and C4 that travel downwards and stimulate the skin over the clavicle and shoulder inferiorly till the second rib after arising under the posterior margin of the sternocleidomastoid muscle. Origin The supraclavicular nerves start from the third [...]

8 08, 2018

Vestibulocochlear Nerve

By Dr. Joseph H Volker | 2018-08-30T09:11:24+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

It contains 2 different parts: (a) a vestibular part, referred to as the vestibularnerve and (b) a cochlear part, named the cochlear nerve. Vestibulocochlear nerve is the 8th cranial nerve. The vestibular nerve is concerned with the maintenance of equilibrium, while the cochlear nerve is concerned with hearing. Functional Component and Nuclei Special somatic afferent [...]

8 08, 2018

Posterior Ethmoidal Nerve

By Dr. Joseph H Volker | 2018-08-30T10:51:13+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

Origin The posterior ethmoidal nerve originates from the nasociliary nerve, a branch of ophthalmic division of the trigeminal nerve. Posterior Ethmoidal Nerve Insertion The posterior ethmoidal nerve exits the orbit from the medial wall of the orbit via a similar canal. It divides proximally towards the infratrochlear nerve and trsvels from the medial [...]

8 08, 2018

Otic Ganglion

By Dr. Joseph H Volker | 2018-08-30T10:50:00+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

It's joined to the mandibular division of trigeminal nerve and gives a relay station to the secretomotor fibres to the parotid gland and is a small parasympathetic ganglion. It's closely associated with the mandibular nerve but functionally it's related to glossopharyngeal nerve, topographically. Size: Pinhead (2-3 millimeters in size). Location: Temple fossa, just below the [...]

8 08, 2018

Transverse cervical nerve

By Dr. Joseph H Volker | 2018-08-30T10:33:40+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

Origin The transverse cervical nerve is a division of the cervical plexus originating from the anterior rami of cervical nerves C2 and C3. The transverse cervical nerve is otherwise known as the Superficial cervical nerve Cutaneous cervical nerve Anterior cutaneous cervical nerve of the neck Transverse cervical nerve Insertion It appears from under [...]

8 08, 2018

Glossopharyngeal Nerve

By Dr. Joseph H Volker | 2018-08-30T09:23:55+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

It's a mixed nerve, i.e., composed of both the motor and sensory fibres but mainly it's sensory. Glossopharyngeal nerve is the 9th cranial nerve. It derives its name from the truth that it gives sensory innervation to the tongue and pharynx. Glossopharyngeal Nerve Functional Parts and Nuclei Special visceral efferent fibres: They supply [...]

8 08, 2018

Buccal Nerve

By Dr. Joseph H Volker | 2018-08-30T10:57:03+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

The buccal nerve originates from the anterior trunk of the mandibular nerve. It is mainly a sensory nerve, but to the lateral pterygoid muscle as well as towards part of the temporalis muscle, may carry the motor innervation. Buccal Nerve Insertion The buccal nerve travels laterally in the middle of the upper and [...]

8 08, 2018

Cervical Plexus

By Dr. Joseph H Volker | 2018-08-30T11:16:06+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

Formation The cervical plexus is also named plexus of loops because ventral ramus of C1 and branches of C2 C4 ventral rami are joined with 1 another to create 3 loops. The very first loop is directed forwards in front of the transverse process of atlas and the remaining 2 loops are directed backwards.Ventral rami [...]

8 08, 2018

Ventral Rami

By Dr. Joseph H Volker | 2018-08-30T08:43:04+00:00 August 8th, 2018|Anatomy, Head and Neck, Nerves|0 Comments

31 pairs of spinal nerves are found in the human body. All spinal nerves originate through a ventral root and a dorsal root. Note that in the human anatomy, anterior and posterior are correspondingly equivalent of ventral and dorsal. All roots are formed by the combination of many dorsal and ventral root filaments or rootlets. [...]