Anatomy of Esophagus: Parts, Constrictions. Neurovascular supply, Venous & lymphatic drainage скачать в хорошем качестве

Anatomy of Esophagus: Parts, Constrictions. Neurovascular supply, Venous & lymphatic drainage

📌𝗙𝗼𝗿 𝗡𝗼𝘁𝗲𝘀 𝗢𝗳 𝗧𝗵𝗶𝘀 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗝𝗼𝗶𝗻 𝗺𝘆 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗰𝗵𝗮𝗻𝗻𝗲𝗹 𝗵𝗲𝗿𝗲:-​ https://telegram.me/bhanuprakashdr​ 📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:-   / drgbhanuprakash   📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash Anatomy of the Esophagus Parts of the Esophagus ________________________ Cervical Part · Located at C6 vertebral level · Extends from the pharynx to the thoracic cavity · Length: 5 cm Thoracic Part · Extends from the thoracic inlet to the diaphragm · Lies anterior to vertebrae T1-T10 · Length: 20 cm Abdominal Part · Extends through the diaphragm at T10 · Length: 2-3 cm · Ends at the cardial orifice of the stomach Constrictions of the Esophagus _______________________________ Upper Esophageal Sphincter (UES) · Located at C6 level · Cricopharyngeal part of the muscle Aortic Constriction · Located at T4 vertebral level · Caused by the aortic arch Bronchial Constriction · Located at T5 vertebral level · Caused by left main bronchus Diaphragmatic Constriction · Located at T10 vertebral level · Acts as the Lower Esophageal Sphincter (LES) Neurovascular Supply ______________________ Arterial Supply · Cervical Part: Inferior thyroid artery · Thoracic Part: Bronchial, esophageal branches of the thoracic aorta · Abdominal Part: Left gastric artery · Overall arterial supply: Esophageal arteries from aorta Venous Drainage · Cervical Region: Inferior thyroid vein · Thoracic Region: Azygos, hemiazygos veins · Abdominal Region: Left gastric vein · Overall venous drainage: Into the azygos system and portal vein Nervous Supply · Motor Innervation: Vagus nerves (cranial nerve X), sympathetic trunk · Sensory Innervation: Recurrent laryngeal nerve, sympathetic fibers Lymphatic Drainage Cervical: Deep cervical lymph nodes Thoracic: Mediastinal lymph nodes Abdominal: Celiac lymph nodes Key Mechanisms & Components _________________________________ Peristalsis · Primary: Initiated by swallowing · Secondary: Clears any remaining substances Reflux Prevention · Role of Lower Esophageal Sphincter (LES) · Pathology: GERD (Gastroesophageal Reflux Disease) Mucosal Structure · Lined with stratified squamous epithelium · Submucosa contains esophageal glands Muscular Layer · Upper third: Striated muscle · Middle third: Mixed striated and smooth muscle · Lower third: Smooth muscle #fmge #fmgevideos #rapidrevisionfmge #fmgejan2023 #mbbslectures #nationalexitexam #nationalexittest #neetpg #usmlepreparation #usmlestep1 #fmge #usmle #drgbhanuprakash #medicalstudents #medicalstudent #medicalcollege #neetpg2023 #usmleprep #usmlevideos #usmlestep1videos #medicalstudents #neetpgvideos #esophagus #anatomyofesophagus #esophagusanatomy #medicalstudents #medicalcollege #mbbsvideos #anatomyvideos