test 1- head and neck Flashcards
seven uppermost vertebra
cervical
uppermost vertebra are ___ than the lower vertebra
smaller
there is a slight ___ formed by the cervical vertebra
curvature
the first cervical vertebra supports the __
skull
unlike other vertebra, the body is missing from C1 and is replaced by ___ from C2
dens
The second vertebra has a unique process, the ___, which extends upwards to act as the ___ for C1
dens
body
together, the ___ and ___ greatly increase the ability to rotate the head
c1 (atlas) & c2 (axis)
all cervical vertebra have a ___ in each trv process
foramen
vertebra arteries pass through the ___
transverse process
unlike lower vertebra, the cervical spinous process is often ___
bifid
neck is divided into 2 major regions
- anterior triangle
2. posterior triangle
the ___ runs obliquely from the sternum to the mastoid of temporal bone and is dividing line between the two anterior & posterior triangle
sternocleidomastoid muscle (SCM)
hyoid bone is located in the ____ ,anteriorly at ___ and posteriorly at ___
- midline of neck
- anteriorly, at the base of mandible
- posteriorly at C4
muscles of the ___ triangle are classified according to their location relative to the hyoid bone
anterior
infrahyoid muscles
underneath the hyoid bone
suprahyoid muscles
above the hyoid bone in the neck
infrahyoid muscles
- thyrohyoid
- sternohyoid
- sternothyroid
- omohyoid
omohyoid muscle originated in the ___ triange and crosses ___ the SCM to emerge in the ___ triangle
posterior
posterior (under)
anterior
suprahyoid muscles
- digastric
- mylohyoid
- stylohyoid
- geniohyoid
posterior triangle muscles
- trap
- levator scapulae
- splenius capitis
- scalene muscle grp (ant, mid, post)
the most anterior of the posterior triangle muscles
scalene
anterolateral boarder for the sternothyroid, sternohyoid, and omohyoid muscles
strap muscles
facial vein courses over ___ muscles of the ___triangle
suprahyoid
anterior
external jugular vein course ___ to the posterior triangle muscles, along the ___
anterior
SCM
the pharynx is the proximal passage for ___
both respiratory and digestive tracts
pharynx starts from the base of ___ to ___
skull
C6
connects the nasal cavity and mouth superiorly to the larynx and esophagus inferiorly
pharynx
3 regions of the pharynx
- nasopharynx
- oropharynx
- laryngopharynx
most superior region of pharynx
nasopharynx
most inferior region of pharynx
laryngopharynx
posterior to the nasal cavity, inferior to the sphenoid bone, superior to the level of soft palate
nasopharynx
nasopharynx passes
air
oropharynx passes
food & air
posterior to the oral cavity, extending from soft palate to epiglottis
oropharynx
laryngopharynx passes
food & air
posterior to the upright epiglottis and extends to the larynx
laryngopharynx
tongue base, vocal chords and trachea can be found in this region
laryngopharynx
nasopharynx is superior to the ___
sphenoid bone
nasopharynx is superior to the ___
level of soft palate
oropharynx is ___ to the oral cavity
posterior
narrowest of the 3 pharynx sections
laryngopharynx
located between the hyphoid bone and the level of the larynx and esophagus
laryngopharynx
laryngopharynx continues as the ___ at the level of the circoid cartilage
esophagus
air continues to the larynx ___ and food to the esophagus ___
anteriorly
posteriorly
marks the boundary between the oropharynx and the laryngeal pharynx
epiglottis
the ___ and ___ separate the nasopharynx and oropharynx
soft palate and uvula
depressions on each side of the anterior wall of laryngopharynx that function to avert food away from the larynx
piriform recesses (sinuses)
hyoid bone is found at the angle of the ___
neck
adam’s apple is commonly used to describe the
thyroid cartilage
the ___ cartilage is found connecting to the trachea
cricoid
external unpaired cartilages of larynx
- thyroid
- epiglottis
- cricoid
largest and most superior external unpaired cartilage of larynx
thyroid
epiglottis is unique due to
flexibility
laminae unite in midline to form protective box for vocal folds and forms “adam’s apple”
thyroid cartilage
complete ring that marks the end of larynx and beginning of trachea and esophagus
cricoid cartilage
external paired cartilages of larynx
- arytenoids
- corniculate
- cuneiform
most inferior paired cartlage
arytenoid
pyramid shaped cartilages that sit on the cricoid
arytenoid
horn- shaped, help in open and closing of glottis during voice production
corniculate
small, curved cartilages within the aryepiglottic fold
cuneiform
anterior larynx is from C__ - C__
C3-C6
larynx is formed by (3)
- hyoid bone
- thyroid cartilage
- cricoid cartilage
superiorly opens to laryngopharynx, inferiorly continue with the trachea
anterior larynx
t/f: the hyoid bone is u shaped with 1 horn on each side
FALSE - 2 horns (lesser & greater)
epiglottis is spoon shaped and lies ___ to the u-shaped hyoid bone
posterior
paired arytenoid cartilages are found ___ the thyroid and rest __ of the cricoid cartilage
behind
on top
from right sagittal view, what are the structures of the larynx from right to left
most right = most anterior
- epi
- cricoid
- thyroid
- arythenoid
- corniculate
superior pair of ligaments (vestibular folds)
false vocal cords
t/f: false vocal cords play role in production of voice
false
inferior pair of ligaments
true vocal cords
true vocal cords move towards ___ during phonation (speech)
midline
true vocal cords more from opening, glottis during ___
respiration
primary structure involved in voice production
glottis
superior to vocal folds is pair of mucosal folds
false vocal cords
vocal folds and the medial opening between them is called
the gottis
space on either side between the tongue and epiglottis
vallecula
proximal passageway for the GI tract, transport food from mouth to the stomach
esophagus
on transverse image, esophagus will appear as a flat, soft tissue structure ___ to the trachea and ___ the vertebral structures
posterior
anterior
anterior portion of trachea is ___ whereas posterior surface is ___
cartilage
flexible membrane
provides a ridgid secure airway for respiratory system
anterior trachea cartilage
allows esophagus to expand when swallowing food
posterior trachea
common carotid artery branch into
internal & external carotid artery
internal carotid artery and vertebral arteries supply
brain
common carotid artery and internal jugular vein are __ in the neck
deep
the external jugular vein is found ___ in the neck
superficial
L&R ___ vein fuse to form into SVC
brachiocephalic
external jugular vein drain blood from the
superficial head and neck
internal jugular vein drains blood from the
brain and deep neck
the main vein
internal jugular
thyroid is in the ___ neck
anterior
superior border of the lateral lobes of thyroid starts at the ___
thyroid cartilage
blood supplied to thyroid gland by ___ from ___ & ___ from ___
superior thyroid artery
external carotid
inferior thyroid artery
subclavian artery
superior & middle thyroid veins drain into the
internal jugular vein
inferior thyroid vein drains into the
brachiocephalic veins
longus colli muscle is the ___ landmark for thyroid
posterior
trachea and esophagus are the ___ landmark for thyroid
medial
strap muscles (sternohyoid, sternothyroid & omohyoid) are the ___ landmark for thyroid
anterolateral boarder
sternocleidomastoid muscle (SCM) us the ___ landmark for thyroid
lateral and superficial
the common carotid artery and internal jugular vein are the ___ landmarks for thyroid
posterior lateral boarder