Triangles of the Neck Flashcards
What are in the subcutaneous layer of the neck?
Sensory nerves, blood and lymph vessels, superficial lymph nodes, fat, and platysma muscle
What are the landmarks in the neck?
C7 - prominent vertebral spine Hyoid bone - C3-C4 Thyroid and cricoid cartilages - C6 Clavicle and sternum Mandible
What two veins join to make the retromandibular vein?
Superficial temporal vein and the maxillary vein
What does the external jugular vein pass?
The upper 2/3 of the SCM
Where is the anterior jugular vein?
Runs just off the midline to the root of the neck and connects with subclavian vein
Where do the superficial cutaneous nerves emerge?
From the posterior margin of mid SCM
What are the superficial cutaneous nerves?
Lesser occipital N, greater auricular N, transverse cervical N, accessory N, and supraclavicular N
Where are anesthetics applied in the neck?
Nerve point of the neck
What are the different fascias in the neck?
Investing, pretracheal, and prevertebral
What is the area in between the pretracheal fascia and prevertebral fascia?
Retropharyngeal space
What is the retropharyngeal space?
The space between prevertebral fascia and pretracheal fascia that allows movement of the pharynx, larynx, and esophagus during swallowing. It extends from the base of the skull to the mediastinum.
What are the borders of the anterior triangle?
Midline of the neck, sternocleidomastoid, lower border of the mandible.
What are the borders of the posterior triangle?
Sternocleidomastoid, trapezius and clavicle
What separates the posterior triangle into two parts?
Inferior belly of the omohyoid
What is the role of the scalene muscles?
Laterally flex the neck and elevate the ribs during deep inspiration.
