Blood Vessels/ Viscera/ Nerves Of Neck Flashcards
What is within the carotid sheath?
Carotid a.
Internal jugular vein
Vagus n.
What important things does the carotid body and sinus control?
Heart rate
BP
Respiratory rate
Depth of respiration
Where does the right common carotid originate?
Braciocephalic trunk
Where does the left common carotid originate from?
Aortic arch
what are the terminal branches of the external carotid artery?
superficial temporal artery
maxillary artery
what are the anterior branches of the external carotid artery?
facial artery
lingual artery
superior thyroid artery
what are the posterior branches of the external carotid artery?
posterior auricular artery
occipital artery
what are the medial branches of the external carotid artery?
ascending pharyngeal artery
what branch does the superior thyroid artery give off?
superior laryngeal artery
where does the posterior auricular artery reach?
the notch between the cartilage of external acoustic meatus and mastoid process
what two branches does the superficial temporal artery divide into?
anterior (frontal branch)
posterior (parietal) branch
where does the internal jugular vein begin and end?
begins- jugular foramen (continuation of sigmoid sinus)
ends- joins subclavian vein= brachiocephalic vein
where in the carotid sheath is the IJV?
lateral to the artery
what are the tributaries of the IJV?
facial vein lingual vein inferior petrosal sinus + sigmoid sinus pharyngeal veins superior + middle thyroid veins occipital vein (sometimes)
what are the branches of the 1st part of the subclavian artery?
vertebral artery
thyrocervical trunk
internal thoracic artery
what are the branches of the 2nd part of the subclavian artery?
costocervical trunk
what are the branches of the 3rd part of the subclavian artery?
dorsal scapular artery (or NONE)
what are the 4 parts of the vertebral artery?
1st- prevertebral
2nd- cervical
3rd- atlantic
4th- intracranial
Where does the common carotid divide into internal and external?
Thyroid cartilage
What is the main control of the carotid body?
Respond to changes in blood composition
What is the main control of the carotid sinus?
Respond to changes in blood pressure
What is the nerve that is controlling the carotid body and sinus?
Glossopharyngeal
Where does the external carotid bifurcate?
Parotid gland
What nerve crosses the lingual artery?
Hypoglossal
What does the lingual artery supply?
Tongue
What does the facial artery supply?
Pharynx Soft palate Palatine tonsil Submandibular gland Muscles
What does the occipital artery supply?
Dura mater
Auricle middle ear
Mastoid air cells
Muscles
What does the posterior auricular artery supply?
Parotid gland Auricle middle ear Scalp muscles
What does the superficial temporal artery ascend with?
Auriculotemporal nerve
Superficial temporal vein
What does the superficial temporal artery supply?
Frontal, temporal, and parietal regions of the scalp Parotid gland External ear Face Temporomandibular joint
What does the maxillary artery supply?
External and middle ear Cranial dura mater Upper and lower teeth and gingiva Muscles of mastification Face Hard/soft palate Palatine tonsil Nasal cavity
What are the upper and lower ends of the internal jugular vein called?
Superior and inferior bulbs
What drains into the superior bulb of the IJV?
Sigmoid sinus + inferior petrosal sinus
The right subclavian artery is a branch of what?
Brachiocephalic trunk
Your left subclavian artery is a branch of what?
Aortic arch
Where does the 1st part of the vertebral artery begin and end?
Ascends from Subclavian to c6
Where does the 2nd part of the vertebral artery go?
Enters transverse foramina C6 to c1
Where does the 3rd part of the vertebral artery ascend to?
Enters vertebral canal posterior to the lateral mass of atlas and lies in a groove
Where does the 4th part of the vertebral artery ascend?
Enters through foramen magnum by piercing dura mater and arachnoid
What are the branches of the thyrocervical trunk?
Inferior thyroid artery
Transverse cervical artery
Suprascapular arteries
What does the inferior thyroid artery supply?
Larynx Trachea Pharynx Esophagus Thyroid Parathyroid glands
What branch is a branch off of the inferior thyroid artery?
Ascending cervical artery
If the dorsal scapular artery is on the subclavian, what is the artery off the thyrocervical trunk called?
Superficial cervical artery
If the dorsal scapular artery is off the artery on the thyrocervical trunk, what is the artery?
Transverse cervical
What nerve is the suprascapular artery joined by near the scapula?
Supra scapular nerve
What are the two branches of the costocervical trunk?
Supreme intercostal a.
Deep cervical artery
Where does the subclavian vein begin and end?
Begins at lateral border of first rib
Ends at sternoclavicular joint by joining IJV
Where does the vagus nerve exit the skull?
Jugular foramen
What are the two sensory ganglia of the vagus nerve?
Superior ganglion
Inferior ganglion
Where is the superior and inferior ganglion?
Superior- within the jugular foramen
Inferior- inferior to the jugular foramen
What are the two branches of the vagus nerve within the jugular foramen?
Meningeal branch
Auricular branch
What are the 4 branches of the vagus nerve within the neck?
Pharyngeal branch
Superior laryngeal branch
Cardiac branches
Right recurrent laryngeal nerve
What does the pharyngeal branch of the vagus nerve supply?
Motor innervation to muscles of pharynx and soft palate
What does the superior laryngeal nerve (branch of vagus) branch into?
Internal and external laryngeal nerves
What does the internal laryngeal nerve ( branch of vagus) supply?
SENSORY innervation to
posterior of tongue
Laryngopharynx
Larynx
What does the external laryngeal nerve (branch of vagus) supply?
MOTOR innervation to
Cricothyroid muscles
Inferior pharyngeal constrictor muscles
What foramen does the accessory nerve enter and exit through?
Enters through foramen magnum
Exits through jugular foramen
What does the accessory nerve originate from?
C1 to C5 spinal segments that make the spinal root
What are the 4 main branches of the hypoglossal nerve?
Terminal nerves that supply tongue
Nerves to geniohyoid and thyrohyoid
Meningeal branch
Superior root of ansa cervicalis
What is the only branch of the hypoglossal nerve that actually contains true hypoglossal fibers?
Terminal branches to the tongue
What are the 4 ganglion that are part of the cervical sympathetic trunk?
Vertebral
Inferior
Superior
Middle
What are the 5 main branches off of the superior ganglion of the cervical sympathetic trunk?
Pharyngeal Gray communicating rami to c1 to c4 Superior cervical cardiac nerve Internal carotid nerve External carotid nerve
What are the 3 main branches for the middle ganglion of the cervical sympathetic trunk?
Thyroid branch
Gray communicating rami c5 to c6
Middle cervical cardiac nerve
What is the cervicothoracic or stellate ganglion?
When the inferior cervical ganglion fuses with the first thoracic ganglion
What are the major branches of the inferior ganglion of the cervical sympathetic trunk?
Ansa subclavia
Inferior cervical cardiac nerve
Gray communicating rami to spinal nerves c7- c8
What forms the cervical plexus?
Ventral rami of c1 to c4 spinal nerves
What are the branches of the cervical plexus?
Lesser occipital Greater auricular n. Transverse cervical n. Supraclavicular n. Ansa cervicalis n.
What muscle does the phrenic nerve pass in front of in the neck to reach thorax?
Scalenus anterior (and subclavian artery)
What three things does the thyroid gland secrete?
T3
T4
Calcitonin
Why is it clinically important that the thyroid is connected to the larynx and trachea by the deep cervical fascia?
The thyroid will move when a patient swallows
What is the point of origin on the tongue of the thyroid?
Foramen cecum
What keeps the thyroid connected to the tongue during migration?
Thyroglossal duct
What are thyroglossal cysts?
Persistent segment of the thyroglossal duct
What are the parts of the thyroid gland?
Isthmus
2 lobes
Pyramidal lobe
What is the pyramidal lobe of the thyroid?
Remnant of the thyroglossal duct that did not disappear
What tracheal level is the thyroid?
2nd 3rd tracheal cartilages
What are the 3 arteries that reach the thyroid?
Superior thyroid artery
Inferior thyroid artery
Thyroid ima artery (sometimes)
What are the three veins of the thyroid?
Superior thyroid vein
Inferior thyroid vein
Middle thyroid vein
What do each of the three thyroid veins drain into?
Superior & middle = internal jugular vein
Inferior thyroid vein= brachiocephalic vein
What do the parathyroid glands secrete and what does it do?
Parathormone - increases blood Ca+ levels
What is the venous supply of the parathyroid glands?
Parathyroid veins