2.3.1 Neck and Larynx Flashcards
What is a pyramidal lobe?
If present, it is a remnant of the embryonic thyroglossal duct
What is the importance of the posterior cricoarytenoid muscles?
What is important of the submental and submandibular lymph nodes?
What are the covered parts?
What is the difference between the innervation of the larynx in the supraglottic and infraglottic cavity?
Supraglottic cavity - internal laryngeal nerve
Infraglottic cavity - recurrent laryngeal nerve
The intrinsic muscles of the larynx lie under control of the?
Recurrent laryngeal nerve (CN X)
The subclavian artery and brachial plexus are posterior to the?
Posterior to the anterior scalene muscle
What provides blood to the thyroid gland?
Superior thyroid arteries (20%)
Inferior thyroid arteries (80%)
Describe what can occur during vocal cord paralysis.
What is the covered part and why is it important?
Erb’s point = Nerve point in neck
Important for anesthesiologist to administer a block of the 4 cervical cutaneous nerves
What are the characteristics of laryngeal cancer?
Contraction of the thyrohyoid will do what?
Cause laxity of the hypoepiglottic membrane allowing the epiglottis to close over the laryngeal inlet during swallowing
What are the covered parts?
Describe the clinical implications of the innervation of the vocal cords?
What are the covered parts?
What is the ansa cervicalis?
What are the characteristics of the carotid sinus massage?
What is the 1 medial branch of the external carotid?
ascending pharyngeal- branch goes off medially to serve the pharynx & part of nose.
The oblique line of the thyroid cartilage is the site of attachment for what three muscles?
Sternothyroid
Thyrohyoid
Inferior constrictor
What are some possible locations for an emergency airway?
What are the covered parts?