More Neck Flashcards
Identify structure A.
Thyrohyoid membrane of larynx.
What is the thyrohyoid membrane?
A ligament
What does the thyrohyoid membrane attach to?
Upper margin of thyroid lamina, superior horn of thyroid cartilage
Hyoid bone
What is inside the thyroyoid membrane?
Superior laryngeal vessels and internal laryngeal nerves
Identify structure B.
Right lobe of thyroid.
Identify structure C.
Thymus
Describe the location of the thymus.
Posterior to sternum
Anterior to pericardium
What is the function of the thymus?
Production of T-cells
What system does the thymus belong to?
Immune system
Describe the innervation of the thymus.
Vagus nerve and cervical sympathetic chain.
Describe the blood supply to the thymus.
Branches of internal thoracic, inferior thyroid, superior thyroid (sometimes) arteries
Identify structure D.
Thyroid
Describe the location of the thyroid gland.
Anterior to larynx and trachea.
Describe the blood supply to the thyroid gland.
Superior and inferior thyroid arteries
Describe the innervation of the thyroid gland.
Superior, middle and inferior cervical ganglia
What is the function of the thyroid gland?
Synthesizes thyroid hormones
To which body system does the thyroid gland belong?
Endocrine
Identify structure E.
Carotid sheath
What is within the carotid sheath?
Common and internal carotid arteries, internal jugular vein, vagus nerve
What is the carotid sheath?
Fascial layer
What is the function of the carotid sheath?
Protects important neurovasculature in the neck.
Identify structure F.
Left lobe of thyroid gland.
Identify structure G.
Isthmus of thyroid gland.
Identify structure A.
Ansa cervicalis
Identify structure B.
Carotid body
Identify structure C.
Carotid sinus
What is the origin of the ansa cervicalis?
Anterior rami of first to third (sometimes fourth) cervical nerves.
Describe the course of the superior root of the ansa cervicalis.
Leaves hypoglossal nerve
Descends between internal juglar vein and carotid arteries
Describe the course of the inferior root of the ansa cervicalis.
Descends medial or lateral to internal jugular vein, unites with superior root.
What is the target of the ansa cervicalis?
Infrahyoid muscles
What is the function of the carotid body?
Monitors oxygen levels in arterial blood.
What is the function of the carotid sinus?
Monitors changes in arterial blood pressure.
Name structure A.
sublingual gland
Name structure B.
Submandibular gland
Name structure C.
Submandibular duct
Where is the sublingual gland located?
Floor of mouth
What artery supplies the sublingual gland?
Sublingual artery
Describe the innervation of the sublingual gland.
Chorda tympani (CN VII);
Lingual nerve (CN V3)
What is the function of the sublingual gland?
Mainly secret mucous fluid, but can also secrete serous fluid
What body system is the sublingual gland part of?
Digestive
Describe the location of the submandibular gland.
Within submandibular triangle of anterior neck.
Describe the arterial supply to the submandibular gland.
Glandular branches of facial artery.
Describe the innervation of the submandibular gland.
Chorda tympani (CN VII)
What is the function of the submandibular gland?
Secretes mucous and serous saliva
To which body system does the submandibular gland belong?
Digestive
