Deep cervical fascia of neck.pptx
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The document summarizes the three main layers of the deep cervical fascia: pretracheal fascia, prevertebral fascia, and carotid sheath. The pretracheal fascia covers the front of the trachea and splits to form the thyroid gland's capsule. The prevertebral fascia is a strong layer in front of the prevertebral muscles that forms the floor of the posterior triangle. The carotid sheath is a tubular condensation of fascia around the main neck vessels. It contains the common carotid artery, internal jugular vein, and vagus nerve.
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The neck contains four compartments separated by fascial layers: visceral, vertebral, and two vascular compartments. The superficial cervical fascia lies just deep to the skin and contains cutaneous nerves, veins, lymph nodes, and the platysma muscle. Deeper is the deep cervical fascia, organized into layers including the investing layer surrounding the neck, pretracheal layer enclosing structures like the thyroid, and prevertebral layer surrounding the vertebral column. These fascial layers are important as they determine the spread of infection, which can extend between layers into dangerous spaces like the retropharyngeal space and mediastinum.
Neck spaces (1).pptx
This document summarizes several anatomical spaces in the neck, including the submental, submandibular, peritonsillar, parapharyngeal, retropharyngeal, prevertebral, carotid, parotid, and visceral spaces. It also describes key structures and contents of each space. Additionally, it reviews the neck venous system, describing veins such as the external jugular, anterior jugular, internal jugular, subclavian, and their tributaries. The document provides clinical relevance for several spaces as routes of infection spread.
3 seminar parotid gland
The parotid gland is the largest salivary gland located below and in front of the external ear. It is made up of serous and mucous acinar cells, as well as ducts that drain saliva into the mouth via Stenson's duct. The parotid gland receives nerve supply from the facial nerve and parasympathetic fibers from the auriculotemoral nerve. It drains into the retromandibular and external jugular veins. The parotid gland is an important anatomical structure involved in saliva production and secretion.
Deep Neck Spaces
the fascial planes of the neck is very important in the spread and containment of infections, as well as being surgical dissection plane during neck surgery.
infections are rare but need to be identified early and treated appropriately to reduce the mortality and morbidity
this is a slightly well illustrated ppt of the previously uploaded one in february 2015
Deepfasciaofneck by dr.meher
The document discusses the deep fascia of the neck, including its boundaries and layers. It notes that the deep fascia is composed of three layers - the investing layer, pretracheal layer, and prevertebral layer. These layers surround and help compartmentalize the structures of the neck. The document also discusses the spaces that can form around the neck between the fascial layers, including the retropharyngeal space and parapharyngeal spaces.
Deepfasciaofneck by dr.meher
The document discusses the deep fascia of the neck, which compartmentalizes the structures in the neck into four major fascial compartments. The deep fascia consists of three layers - the investing layer, pretracheal layer, and prevertebral layer. The investing layer surrounds the neck, while the pretracheal layer encloses the infrahyoid muscles, thyroid gland, trachea, and esophagus. The prevertebral layer forms a sheath for the vertebral column and associated deep cervical muscles. Between these layers are the neurovascular compartments containing the carotid arteries, internal jugular veins, vagus nerves and deep cervical lymph nodes.
Fascial Spaces of Neck(2).pptx
This document summarizes the fascial spaces and layers of the neck. It describes three layers of deep cervical fascia: the superficial layer invests muscles and structures of the neck, the middle layer encircles the trachea, thyroid and esophagus, and the deep layer arises from ligaments and vertebrae, splitting to enclose posterior neck muscles. It also describes several potential spaces in the neck, including the submental, submandibular, parapharyngeal, retropharyngeal, pretracheal and perivertebral spaces, noting boundaries, contents and clinical significance of each.
The Neck
The document discusses the anatomy of the neck region. It describes the bones, muscles, fascia, vessels and nerves of the neck. Key points include:
- The neck is bounded by the mandible above and the clavicles below. It contains important structures like the larynx, trachea and esophagus.
- Major muscles include the sternocleidomastoid which divides the neck into anterior and posterior triangles.
- The deep cervical fascia supports neck structures and forms layers like the pretracheal and prevertebral fascia.
- Key blood vessels are the common carotid artery and its branches, the external and internal carotid arteries. The carotid sinus is a pressure receptor.
HEAD AND NECK 23.pdf
The document discusses anatomical structures of the head and neck region, including bones, fasciae, muscles, blood vessels, and nerves. It notes the locations of important structures such as the hyoid bone at the C3 level and the cricoid cartilage terminating at the C6 level. It describes the cervical triangles formed by the sternocleidomastoid muscle and subdivided by other structures. Finally, it summarizes the branches and innervation of the cervical plexus, including cutaneous, muscular, and communicating branches.
Perineum
The perineum is the diamond-shaped region between the thighs and below the pelvic diaphragm. It is divided into the urogenital triangle anteriorly and the anal triangle posteriorly. The urogenital triangle contains the superficial and deep perineal spaces, separated by the perineal membrane. The superficial perineal space contains muscles like the bulbospongiosus and blood vessels, while the deep perineal space contains the sphincter urethrae muscle and membranous urethra. Posteriorly, the ischiorectal fossae are located lateral to the anal canal and contain fat, blood vessels and nerves like the pudendal nerve. Diseases
Neck space anatomy
The document discusses the anatomy of fascial spaces in the head and neck region. It describes several layers of deep cervical fascia including the investing layer, middle layer, visceral layer, vertebral layer and alar fascia. It also outlines the boundaries and contents of various fascial spaces such as the buccal space, retropharyngeal space, submandibular space and submental space. Clinical aspects such as drainage of abscesses in these spaces are also mentioned.
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Deep cervical fascia of neck.pptx
- 1. DEEP CERVICAL FASCIA AND ITS LAYERS Presented By: Prince Sinha Roll- 69 MBBS 2021-2022
- 2. CONTENT ● PRETRACHEAL FASCIA ● PREVERTEBRAL FASCIA ● CAROTID SHEATH
- 3. Deep cervical fascia of neck consist of three layer. From outside to inside these are:- ● Investing layer of deep cervical fascia ● Pretracheal fascia ● Prevertebral fascia
- 5. PRETRACHEAL FASCIA ● This layer of deep cervical fascia covers the front and side of trachea so it is called as pretracheal layer. ● It splits and enclose the thyroid gland forming its capsule.
- 6. ATTACHMENTS Superiorly Hyoid Bone Oblique line of thyroid cartilage Cricoid cartilage Inferiorly It passes behind the thyroid vein and merge with arch of aorta and fibrous pericardium.
- 7. ● A fibrous band called Ligament of Berry is derived from this fascia and it connect the capsule of lateral lobe of thyroid to cricoid cartilage
- 9. Tracing Of Pretracheal Fascia Horizontal tracing :- It merge with the investing layer of deep cervical fascia enclosing the sternocleidomastoid muscle and anterior wall of carotid sheath. Vertical tracing :- Above it is attached to hyoid bone and below it enter the thorax in front of trachea and blend with fibrous pericardium.
- 10. CLINICAL CORRELATION The thyroid gland and all thyroid swelling move with deglutition because the thyroid is attached to the cartilages of larynx by the suspensory ligament of Berry.
- 11. PREVERTEBRAL FASCIA ● It is extremely strong and lies in front of prevertebral muscle. ● It forms the floor of posterior triangle of neck.
- 12. ATTACHMENTS Superiorly Base of skull Inferiorly It extend into the superior mediastinum where it split into anterior and posterior layer. Anterior layer blends with buccopharyngeal fascia and posterior layer blend with anterior longitudinal ligament.
- 14. Tracing Of Prevertebral Fascia Horizontal tracing- When traced laterally it cover the scalene muscle, levator scapulae , splenius capitis , and also forming the floor of posterior triangle. Vertical Tracing - Above it extend up to the base of the skull, and below it continues in front of longus colli muscle into superior mediastinum where it blend with anterior longitudinal ligament.
- 15. RETROPHARYNGEAL SPACE ● It is the potential space created in the neck between the Buccopharyngeal fascia and Alar fascia. ● This space allow the expansion of pharynx during swallowing.
- 16. CLINICAL CORRELATION ● Tubercular caries of cervical vertebra produce abscess in prevertebral space which is also known as Pott’s abscess. ● Pus collected in the prevertebral space due to caries of cervical vertebrae may travel forward and create a midline bulge in posterior pharyngeal wall. ● The pus may travel first in posterior triangle and also along the axillary sheath into the axilla.
- 18. Other Modifications Of Deep Cervical Fascia ● Carotid Sheath ● Buccopharyngeal Fascia ● Pharyngobasilar Fascia
- 19. ● It is the tubular condensation of deep cervical fascia around the main vessel of neck. ● The content of carotid sheath :- - Common carotid artery - Internal jugular vein - Vagus nerve Carotid sheath
- 20. ● The carotid sheath is wedge between the three layer of deep cervical fascia. ● The carotid sheath is attached to all these layer by loose areolar tissue. ● In the upper part of the sheath cranial nerves IX ,X , XI ,XII are also present, these nerve pierce the sheath at different point.
- 21. RELATIONS :- ● The ansa cervicalis are embeded in anterior wall of carotid sheath. ● The cervical sympathetic chain are embeded lies behind the sheath.
- 22. BIBLIOGRAPHY ● Gray’s anatomy for students: 3rd edition ● Netter’s Atlas of Human Anatomy: 7th edition ● BD Chaurasia’s Human Anatomy (Volume 3): 8th edition ● Vishram Singh Textbook of Anatomy (Volume 3): 3rd edition
- 23. Thank you