Submandibular Salivary Gland | Parts | Relations | Duct & Relations |Nerve Supply |Clinical anatomy скачать в хорошем качестве

Submandibular Salivary Gland | Parts | Relations | Duct & Relations |Nerve Supply |Clinical anatomy

Features large salivary gland situated in anterior part of digastric triangle size of walnut weighs about 15-20gms roughly J - shaped posterior border of mylohyoid divides the gland into large superficial part small deep part Coverings partially enclosed b/n two layers of investing layer of deep cervical fascia superficial layer covers the inferior surface of gland - is attached to base of mandible deep layer covers the medial surface of gland - attached to mylohyoid line Superficial Part fills the digastric triangle Extent superiorly - deep to mandible upto mylohyoid line inferiorly - overlaps stylohyoid & posterior belly of digastric Surfaces inferior lateral medial Relations Inferior surface skin platysma cervical branch of facial N deep fascia facial V submandibular lymph node Relations Lateral surface submandibular fossa insertion of medial pterygoid facial A Medial Surface mylohyoid hyoglossus styloglossus Deep Part small in size Location deep to mylohyoid superficial to hyoglossus Extent posteriorly - continuous with superficial part round the posterior border of mylohyoid anteriorly - it extents upto posterior end of sublingual gland Relations laterally - mylohyoid medially - hyoglossus above - lingual N with submandibular ganglion below - hypoglossal N Submandibular Duct / Wharton’s duct Thin walled about 5cms long emerges at the anterior end of deep part runs forward on hyoglossus b/n lingual & hypoglossus Ns At the anterior border of hyoglossus, the duct is crossed by lingual N opens on the floor of mouth on the summit of sublingual papilla, at the side of frenulum of the tongue. Blood supply & Lymphatic Drainage Arterial Supply - Facial A Venous Drainage - Common facial V or Lingual V Lymphatic drainage - submandibular Lymph nodes Nerve Supply Supplied by branches from submandibular ganglion. Branches convey secretomotor fibres sensory fibres vasomotor sympathetic fibres from the plexus on facial A Nerve Supply Superior Salivatory Nucleus Nervous Intermedius Facial N Chorda tympani N Joins Lingual N Submandibular Ganglion (Relay) Submandibular Gland --------------------------------------------------------------------------------------------------------------- Follow me on twitter -   / drspgeetha1   Reddit -   / geethahari29   Instagram -   / geethahari182   Linkedin -   / geetha-hari-314068170   Tumblr - https://www.tumblr.com/blog/geethahari My website - https://human-anatomy-lessons.busines... My Blog - https://human-anatomylessons.blogspot... ---------------------------------------------------------------------------------------------------------------- Follow me in blogspot - https://human-anatomylessons.blogspot... _________________________________________________________________________________________________________________ Visit my blogs - https://humananatomyonline.in/ Contact me @ https://t.me/humananatomylessons