Infrahyoid Region Word Scramble
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Question | Answer |
Describe Platysma Muscle | Goes from body of mandible down to the chest region. contract: It opens mouth |
Anterior Triangle contents | All of the visceral things: Thyroid gland, trachea, thyroid cartilage and esophagus |
Muscular Triangle contents | Deep muscles and accessory nerve |
Posterior Triangle boundaries | Posterior border of SCM, clavicle and anterior border of trapezius |
Where fossa does cancer spread from lung or breast? | Supraclavicular fossa |
What happens to heart rate when you massage the carotid bulb? | Drops the heart rate |
Contents of carotid sheath | Internal jugular laterally, vagus, Common/Internal Carotid medially |
Describe Omohyoid muscle | Infrahyoid strap muscle. Most lateral of hyoid bone. Lifts the shoulder blade. Attached at supraclavicular notch. Recruited when choking |
Describe action of thyrohyoid membrane | Suspens the thyroid cartilage from the hyoid |
Describe the Ansa Cervicalis | Innervates omohyoid, sternohyoid and sternothyroid muscles. Embedded in anterior wall of carotid sheath. Comes from C1-C3 |
Investing layer of fascia | Covers all of the muscles on the outside |
Pretracheal layer of fascia | One layer goes around strap muscles. Other layer goes around thyroid gland, trachea etc |
Retropharyngeal space | From base of skull to diaphragm. Space between the buccopharyngeal and prevertebral layers of fascia |
Alar fascia | Subdivision of buccopharyngeal facia. Comes and helps form the carotid sheath |
Thyroid blood supply and pyramidal lobe | Blood supply comes from the periphery (It can be divided without affect on function). Pyramidal lobe is tongue tissue going up toward hyoid bone and is a remnant of embryologic development. |
What mediastinum can parathyroid disease be located? | Hyperparathyroidism or tumor can be in superior mediastinum |
Trachea rupture | You can have subcutaneous emphysema all around the neck tissue. Air can communicate with face, neck and chest. Infection can spread along facial planes into retropharyngeal space |
Carotid injuries | Zone 2 injury is usually survivable. Ausculation of carotid and heart mumurs: Important area for assessing penetrating neck trauma. Internal carotid has no branches |
Carotid sinus | Contains pressoreceptors to monitor blood pressure. Innervated by glossopharyngeal and vagus nerve |
Branches of subclavian | Vertebral, Internal Thoracic, Thyrocervical, Costocervical and Dorsal Scapular |
Costocervical artery branches | Superior intercostal and deep cervical artery |
Thyrocervical artery branches | Transverse cervical, inferior thyroid and suprascapular |
Vagus nerve innervation | Motor and sensory to larynx |
Superior laryngeal nerve | External branch: motor to cricothyroid muscle, Internal branch. Branches off carotid |
Superior thyroid artery | Comes off of external carotid and supplies upper poles of thyroid |
What is Multiple Endocrine Neoplasia Syndrome (MEN II)? | One reccurent laryngeal nerve is not reccurent and just comes off at a right angle and goes into the cricothyroid muscle |
Function of Scalene muscles | Mostly flex the neck. When you contract the muscle it lifts up on the rib cage to aid in inspiration |
What happens if you accidentally numb the phrenic nerve? | Leads to shortness of breath |
What ganglion can a broken clavicle damage? | Stellate ganglion, inferior sympathetic cervical ganglion. This causes disruption with ipsilateral symptons. (Sympathetic regulates blood flow) |
Where does cancer of thyroid tend to spread? | Tracheoesophageal groove |
Zenker's Diverticulum | Outpouching defects at level of circopharyngeus and esophagus. Tend to retain chewed but undigested food |
Branchial Cyst | Betwen internal and external carotid artery where the glossopharyngeal nerve goes. If it gets inflamed and irritates the nerve, you can have glossopharyngeal nerve palsy |
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