Anatomy Of The Neck Flashcards
Neck function
Support for head
Allows for motion of head
Passageway
Contains important organs
What part of spine is in neck
Cervical spine (7)
Hyoid bone (where/function)
Anterior (C3 level)
Mobile
Muscle attachment and aid to keep airway open
Soft issue glands of the neck
Thyroid
Parathyroid
Salivary
Thyroid gland (shape coverings, what kind of gland, level on spine, it has a ______ supply)
Butterfly shaped (2 lobes connected by isthmus)
Thin fibrous capsule
Endocrine gland
Level of C5-T1
Rich blood supply
Thyroid lobes wrap _____ to isthmus
Posteriorly
Thyroid lobes have ___ and ___ poles
Superior
Inferior
Thyroid lobes are posterior to the _______
Anterior to the _______
Strap muscles
Longus colli muscle
Isthmus is how thick, ______ to trachea and esophagus, and at the ____ level of the spine
Relatively thin
Anterior
C5
Parathyroid glands (how many, size, lie on _____ surface of each thyroid lobes, lie _____ to fibroids capsule, regulate _____ levels)
Four small glands
Posterior
External
Calcium
Salivary glands (function, location, produce, how many)
Accessory glands for digestion
Lie in jaw and lower ear area
Produce and secrete saliva into oral cavity via ducts
3 paired glands
What are the names of the salivary glands (3 paired)
Parotids
Submandibulars
Sublinguals
The parotid gland size, location, extends from/to, drainage via _____into the _____
Largest
Wedges between mandible and sternocleidomastoid muscle
Extends from ear orifice to angle of the mandible
Stensen’s duct/mouth
Submandibular gland (size, location, drainage via what/to where)
2nd largest salivary gland
Located at angle of the jaw behind the mandible
Drainage via Wharton’s duct posterior to the teeth
Parathyroid ______ calcium levels
Thyroid ______ calcium levels
Raise
Lower
Sublingual (size, location, duct)
Smallest
Under the tongue
Bartholin’s duct
What is the pharynx and what is it commonly known as
Fibromuscular passageway for respiratory/digestive functions
Commonly referred to as the throat
______ are located in the pharynx
Tonsils
3 sections of pharynx
Nasopharynx
Oropharynx
Laryngopharynx
Nasopharynx (what portion of pharynx, behind what, what tonsils/where, what enters laterally)
Sup portion of pharynx
Directly behind nose
Adenoids tonsils on post wall
Auditory tubes enter laterally
Oropharynx. (What portion of pharynx, behind what, what tonsils/where)
Middle portion of the pharynx
Directly behind the mouth
Palatine tonsils on post wall
Laryngopharynx (what portion of pharynx, adjacent to)
Inferior portion of pharynx
Adjacent to opening of larynx and esophagus
Larynx is what and AKa
Modified part of air passage (voice production)
Voice box
Important cartilages of the larynx
Thyroid; shield shaped, ant ridge forms Adam’s apple
Cricoid: inferior to thyroid cartilage, marks start of esophagus and trachea
Epiglottis
Elastic flap preventing food into the trachea
Trachea (function, divides, reinforced by, passes through, bifurcation at)
Airway to the lungs
Divides into right and left main bronchi
Reinforced by c shaped cartilage
Passes through mediastinum
Bifurcation at T5
Trachea is anterior to _______ and posterior to ______
Esophagus
Thyroid isthmus
Esophagus (what, travels through, ends at)
Muscular canal from mouth to stomach
Travels through mediastinum
Ends at GE junction
Esophagus directly anterior to, posterior to
Spine
Trachea and heart
Vasculature of the neck
Carotid arteries
Vertebral arteries
Jugular veins
Bifurcation of trachea at/called
T5
Carina
Vasculature of the neck is on the ____ aspect of the neck and is _____¥ to the thyroid gland
Lateral
Lateral
Do Common carotids arteries give off side branches
No
CCA are surrounded by
Carotid sheath
CCA bifurcate into
Internal and external carotid arteries
Thyroid lobes are ____ to the CCA
Medial
CCA _____ to the jugular vein
Medial
Right common carotid artery is a branch of
The brachiocephalic artery
Left CCA is branch of
2nd branch of the aortic arch
Internal carotid artery enters base of skull through the
Temporal bone
ICA has ____ branches in the neck region
No
ICA connects to the
Circle of Willis
ICA function
Supply blood to the brain
External carotid arteries have _____ branches in the neck area
Numerous
ECA path is
Tortuous
ECA function
Blood supply to the face and scalp
Vertebral arteries are the first branch of the
Subclavian artery
Vertebral arteries ascend through ______ of the _____ vertebrae
Transverse foramina
Cervical
Vertebral arteries re ____ to CCA
Posterior
Vertebral arteries enter head via
Foramen magnum
What do the vertebral arteries form with tin the head
The basilar artery which then connects to circle of Willis
Internal jugular veins drain
Venous sinuses in head
Internal jugular veins lie ____ to internal and CCA
Lateral
IJV runs within the
Carotid sheath
IJV collapse ____ with compression
Easily
What is the carotid sheath
Strong fascia that surrounds structure to prevent easy compression
What is in the carotid sheath
CCA
IJV
Vagus nerve
What layer of meninges contains venous sinuses
Dura mater
Vagus nerve is ____ to CCA/IJV and is located ____
Posterior
Between the CCA and IJV
Masseter (function, deep to, movement created)
Primary muscle of chewing
Deep to parotid gland
Elevates mandible
Platysma (what, extend from/to, anterior to ___ and ____, create what)
Large thin muscular sheath
Extends from mandible to clavicle
Strap muscles
SCM
Creates ridges in neck
Broad muscle closing diagonally in neck
Sternocleidomastoid (SCM)
SCM extend from ___ and ____ to ____
Sternum
Clavicle
Strap muscles
SCM is _____ to strap muscles
Lateral and anterior
SCM function
Turn head from side to side and flexes neck
Strap muscles are ___ to the thyroid
anterior and lateral
3 pairs of strap muscles
Sternohyoid
Sternothyroid
Omohyoid
Posterior muscles of the neck
Scalene
Lavator scapulae
Trapezius
What posterior neck muscle is most posterior and superficial
Trapezius
Cervical lymphatic system
Extensive lymphatic network in neck
Cervical lymphatic system contains more than a ___ of the body’s total number of nodes
1/3
Location of cervical lymphatic system (deep nodes, along, ant and inf to)
Deep nodes clustered along vessels
Along lower jaw
Anterior and inferior to ear