Vessels and Nerves of the Neck Flashcards
Origin of R Common Carotid A
Brachiocephalic Trunk
Origin of L Common Carotid A
Aortic Arch
Carotid Sinus
enlargement of beginning of internal carotid artery
nerve endings from glossopharyngeal n to sense blood pressure
Carotid Body
epithelial structure at carotid bifurcation
nerve endings from glossopharyngeal n to sense chem changes- O and CO2 lvls, blood pH
Carotid Body and Sinus help control…
heart rate, blood pressure, respiratory rate and depth
Superior Thyroid A
from Ex Carotid A
goes to thyroid gland
Superior Laryngeal A
Branches from Superior Thyroid A
goes to larynx
Lingual A
From Ex Carotid A
gives off branches that supply tongue
Facial A
From Ex Carotid A
branches supply muscles of face, pharynx, soft palate, submandibular gland
Occipital A
From Ex Carotid A
goes to back of scalp
branches supply ear, middle ear, cranial dura mater
Posterior Auricular A
From Ex Carotid A
supplies ear, middle ear,scalp behind ear, parotid gland
Ascending Pharyngeal A
smallest branch from Ex Carotid A
supplies pharynx, soft palate, middle ear, cranial dura mater
Superficial Temporal A
End of Ex Carotid A
supplies frontal, temporal, parietal regions of scalp, parotid gland, external ear, face
Maxillary A
End of Ex Carotid A
Supplies external and middle ear, cranial dura mater, teeth, mastication m, face, nasal cavity
Internal Jugular V
Starts in jugular foramen, ends at subclavian v
collects most blood from head and neck
R Subclavian A
Branch of brachiocephalic trunk
L Subclavian A
Branch of Aortic Arch
1st Part of Subclavian A
Vertebral A, Thyrocervical Trunk, Internal Thoracic A
2nd Part of Subclavian A
Costocervical Trunk
3rd Part of Subclavian A
Dorsal Scapular A
2nd (Cervical) Part of Vertebral A
gives off small muscular and spinal branches
4th (Intracranial) Part of Vertebral A
gives off major branches of vertebral a
Branches of Thyrocervical Trunk
Inferior Thyroid, Superficial/ Transverse Cervical, Suprascapular A
Inferior Thyroid A
from thyrocervical trunk
supplies larynx, trachea, pharynx, esphagus, thyroid, parathyroid
Difference between Superficial Cervical and Transverse Cervical A
if dorsal scapular comes from 3rd part- Superficial
if dorsal scapular comes from thyrocervical trunk- Transverse
Superficial/ Transverse Cervical A
from thyrocervical trunk
supplies superficial muscles of upper back
Suprascapular A
from thyrocervical trunk
supplies muscles of posterior scapula
Branches of Costocervical Trunk
Superior Intercostal A, Deep Cervical A
Superior Intercostal A
from costocervical trunk
gives off first 2 posterior intercostal aa
Deep Cervical A
from costocervical trunk
supplies deep muscles of back of neck
Vagus N
motor and sensory fibers
from medulla oblongata, exits skull thru jugular foramen
Meningeal Branch of Vagus N
supplies dura mater of posterior cranial fossa
Auricular Branch of Vagus N
supplies auricle, external acoustic meatus, tympanic membrane
Pharyngeal Branch of Vagus N
motor inn to muscles of pharynx and soft palate
forms pharyngeal plexus w/ glossopharyngeal n
Superior Laryngeal N
from vagus n
divides internal and external laryngeal nn
Internal Laryngeal N
Sensory inn to mucosa of larynx and post part of tongue
From vagus n
External Laryngeal N
motor inn to cricothyroid m and part of inferior pharyngeal constrictor m
From vagus n
R Recurrent Laryngeal N
curves under R subclavian a
goes to lower larynx
Accessory N
C1-C5 spinal nn
supplies sternocleidomastoid and trapezius
Hypoglossal N
from medulla oblongata, exits skull thru hypoglossal canal
motor inn to tongue
Meningeal Branch of Hypoglossal N
supplies dura mater of posterior cranial fossa
contains sensory fibers of C1-C2
Superior Cervical Ganglion Branches
Internal and External Carotid N, Gray Communicating Rami to C1-C4, Pharyngeal branches, Superior Cervical Cardiac N
Middle Cervical Ganglion Branches
Gray Communicating Rami to C5-C6, Middle Cervical Cardiac N, Thyroid branches
Inferior Cervical Ganglion Branches
Gray Communicating Rami to C7-C8; Inferior Cervical Cardiac N, Ansa Subclavia
Cervical Plexus
formed from ventral rami of C1-C4
Cutaneous branches and Ansa cervicalis
Phrenic N
C3-C5 (part of cervical plexus)
inn diaphragm
Muscular Branches of Cervical Plexus
supply anterior vertebral m, middle scalene, levator scapulae, trapezius, sternocleidomastoid
