The Neck Flashcards
What is the superior and inferior limit of the neck?
- Superior: Mandible and base of skull
- Inferior: thoracic inlet
Anatomically, the neck is divided into anterior and posterior portions of the neck. What is it divided by?
The sternocleidomastoid muscle
What are the proximal and distal attachments of the sternocleidomastoid muscle?
- Proximal attachment: mastoid process
- Distal attachment: sternum and clavicle
What does the sternocleidomastoid do when there is only one working?
Rotates head and moves slightly upwards
What does the sternocleidomastoid do when both of them are working?
Head is bought forward and down
What are the boundaries of the anterior triangle of the neck?
- Sternocleidomastoid muscle
- The midline
- The lower border of the mandible
What are the boundaries of the posterior triangle of the neck?
- Sternocleidomastoid
- Trapezius muscle
- Middle third of the clavicle
What can the contents of the anterior triangle of the neck be divided into?
- Muscles
- Skeletal elements and viscera
- Glands
- Nerves
- Vessels
What are the muscles found in the anterior triangle?
- Mylohyoid
- Anterior belly of digastric
- Infrahyoid muscles (Sternohyoid, sternothyroid, thyrohyoid, omohyoid)
What are the skeletal elements of the anterior triangle of the neck?
- Thyroid cartilage: largest of the laryngeal cartilages
- Cricoid cartilage: below the thyroid cartilage, just above the trachea
- Hyoid bone: single bone not joined into any other bone
- Trachea
What are the glands found in the anterior triangle of the neck?
- Thyroid gland
- Parathyroid glands
- Submandibular glands
How would you examine the thyroid gland of a patient?
Offer the patient a drink of water and ask them to swallow for you - feel the neck when the patient swallows and should feel if there is any swelling round the gland
What type of gland is the thyroid gland?
Endocrine
What is the thyroid gland enclosed by?
Pre-tracheal fascia (band of fibrous tissue)
What arteries supply the thyroid gland?
- Superior (external carotid) and inferior (thyrocervical trunk) arteries