Final Exam IV Flashcards on Head and Neck Anatomy

External jugular vein

Which vein is superficial to the SCM?

Internal jugular vein

Which vein is deep to the SCM?

Anterior jugular vein

What vein drains into the external jugular vein?

Infrahyoid muscles

What muscles are in the muscular triangle?

Stylopharyngeus

What is the function of the stylopharyngeus?

Stylopharyngeus, salpingopharyngeus, palatopharyngeus

What are the muscles of the pharynx's internal layer?

Superior, middle, and inferior pharyngeal constrictors

What muscles constrict the pharynx?

Common carotid artery

What structure is found in the carotid triangle?

Common carotid, IJV, vagus nerve

What structures are enclosed in the carotid sheath?

At origin of internal carotid artery

Where is the carotid sinus located?

Blood pressure (baroreceptor)

What does the carotid sinus sense?

O₂, CO₂, pH (chemoreceptor)

What does the carotid body sense?

Glossopharyngeal (IX) and vagus (X)

What nerve innervates the carotid body?

Separates cerebellar hemispheres

What is the function of the falx cerebelli?

Cavernous sinus region

Which foramen transmits CN VI, internal carotid artery?

Lumbar cistern

Which cistern is used for lumbar puncture?

Facial vein, superior thyroid vein

What drains into the internal jugular vein?

Superior thyroid artery

Which artery supplies the middle and inferior pharyngeal constrictors?

Stylopharyngeus, palatopharyngeus, salpingopharyngeus

What muscles elevate the pharynx and larynx?

CN IX, CN X, and sympathetic fibers

Which nerves form the pharyngeal plexus?

Common carotid artery, internal jugular vein, vagus nerve, hypoglossal nerve, ansa cervicalis, carotid body/sinus

What structures are found in the carotid triangle?

Submandibular gland, facial artery and vein, hypoglossal nerve, lymph nodes

What structures are found in the submandibular triangle?

The two cerebellar hemispheres

What does the falx cerebelli separate?

CN V, VII, IX, X

Which cranial nerves are mixed?

Arytenoid, Corniculate, Cuneiform

Which laryngeal cartilages are paired?

CN IX; elevates pharynx during swallowing

What is the innervation and function of the stylopharyngeus muscle?