Gross 2 The Neck Area Flashcards
insertion of the platysma?
lower border of the mandible and the angle of the mouth
origin of the platysma?
superficial Fascia over the pectoralis Major and deltoid muscles
nerve of the Platysma?
Cervical branch of facial nerve (CN 7)
function of platysma?
depresses the mandible and draws down the corner of the mouth
origin of the sternocleidomastoid?
sternal head from the front of the manubrium, clavicular head from the third of the clavicle
insertion of the sternocleidomastoid
lateral surface of mastoid process, lateral half of the superior nuchal line
nerve of the sternocleidomastoid
accessory nerve (CN XI)
function of the sternocleidomastoid?
chief flexor of the head
origin of the trapezius
external occipital protuberance
ligamentum nuchae
spinous processes of the seventh cervical and all thoracic vertebrae
insertion of the trapezius
the lateral third of the clavicle
spine of the scapula
acromion process
nerve of the trapezius
accessory nerve (CN11) and C3 and C4 from the cervical plexus
function of the trapezius
the upper portion rotates the scapula upward (elevates)
the middle portion retracts
the lower portion rotates the scapula downward (depresses)
origin of the Omohyoid
the inferior belly of omohyoid originates from the upper border of the scapula. it ends in an intermediate tendon located deep to the sternocleidomastoid muscle. the superior belly extends upwards from this tendon
insertion of the Omohyoid
the body of the hyoid bone
nerve of the Omohyoid
Ansa Cervicalis (C1,C2,C3)
function of the Omohyoid
depress the hyoid bone and larynx
origin of the Sternohyoid
posterior surface of the manubrium
and
the medial end of the clavicle
insertion of the sternohyoid
the body of the hyoid bone
nerve of the sternohyoid
Ansa Cervicalis (C1,C2,C3)
function of the sternohyoid
depresses the hyoid bone and larynx
origin of the sternothyroid
posterior surface of the manubrium
and
deep inferior to the origin of the sternohyoid
function of the sternothyroid
depresses the larynx
origin of the thyrohyoid
oblique line on the lamina of the thyroid cartilage
insertion of the thyrohyoid
the body of the hyoid bone
nerve of the thyrohyoid?
C1 through the hypoglossal nerve
function of the thyrohyoid
depresses the hyoid bone
what muscles are known as the infrahyoid muscles?
Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid
what are the muscles of the Root of the Neck?
Scalenus Anterior
Scalenus Medius
Scalenus Posterior
origin of the Scalenus Anterior
transverse processes of cervical vertebrae 4 through 6
insertion of the scalenus anterior
first rib
nerve of the scalenus anterior
Ventral primary rami of C5 through C8
function of the scalenus anterior
elevates the first rib during respiration
origin of the scalenus medius
transverse processes of cervical vertebrae 2 through 7
insertion of the scalenus medius?
first rib
nerve of the scalenus medius
ventral primary rami of C3 through C4
function of the scalenus medius
elevates the first rib during inspiration, flexes and laterally rotates cervical part of vertebral column
origin of the scalenus posterior
transverse processes of cervical vertebrae 4 through 6
insertion of scalenus posterior
second rib
nerve of the scalenus posterior
ventral primary rami of C4 through C8
function of scalenus posterior
elevates the second rib during inspiration, flexes and laterally rotates cervical part of the vertebral column
what are the muscles of the Submandibular Region
Digastric Muscle Mylohyoid Muscle Geniohyoid Muscle Genioglossus Muscle Hypoglossus Muscle Styloglossus Muscle Stylohyoid Muscle
origin of the digastric muscle
posterior belly from the mastoid process
anterior belly from the digastric fossa
insertion of the Digastric muscle
both bellies insert into the hyoid bone by an intermediate tendon which connects them together. The intermediate tendon is strapped to the hyoid bone by a fibrous loop
nerve of the Digastric muscle
Posterior belly: cervical branch of the Facial Nerve (CN 7)
Anterior Belly: by nerve to the mylohyoid (CN 5)
function of the Digastric Muscle
elevates the hyoid bone
-will depress mandible if hyoid is fixed
which belly of the digastric Muscle will be paralyzed by Bell’s Palsy?
the posterior belly innervated by the cervical branch of the facial nerve
origin of the mylohyoid Muscle?
Mylohyoid Line
insertion of the mylohyoid muscle?
body of the hyoid bone
Median Raphe
what the fuck is the median Raphe?
a fibrous band where muscle fibers from 2 sides come together and interweave (a seam)
nerve of the mylohyoid muscle?
nerve to the mylohyoid (CN 5)
function of the mylohyoid muscle
elevates hyoid bone and floor of the mouth
origin of the geniohyoid muscle?
inferior genial tubercle
inferior mental spine
insertion of the geniohyoid
body of the hyoid bone
nerve of the geniohyoid muscle
C1 fibers through hypoglossal
function of the geniohyoid muscle
elevates hyoid bone and tongue
what is the largest muscle of the tongue?
Genioglossus muscle
origin of the genioglossus muscle
superior genial tubercle
superior mental spine
insertion of the genioglossus muscle
Tip and entire undersurface of tongue
nerve of the genioglossus muscle
hypoglossal nerve (lingual branch)
function of the genioglossus muscle
draws tongue forward, protrudes tip of tongue
origin of the hyoglossus muscle?
body and greater horn of hyoid bone (upper surface)
insertion of Hyoglossus muscle
sides of the tongue
nerve of the Hyoglossus muscle
hypoglossal nerve
function of the hypoglossus muscle
draws tongue downward
origin of the styloglossus muscle
styloid process
insertion of styloglossus muscle
sides of the tongue
nerve of the styloglossus muscle
hypoglossal nerve
function of styloglossus muscle
draws tongue upward and backward
origin of stylohyoid muscle?
styloid process
what pierces the stylohyoid muscle?
the intermediate tendon of Digastric
insertion of the stylohyoid muscle
body of hyoid bone
nerve of stylohyoid muscle
Facial nerv
function of stylohyoid muscle
elevates hyoid bone and tongue
what are the muscles of the soft palate?
Musculus Uvulae
Levator Veli Palatini
Tensor Veli Palatini
origin of the musculus Uvulae
posterior nasal spine
insertion of the Musculus Uvulae
mucous membrane of uvula
nerve of the musculus Uvulae
left half by left Vagus CN 10
right half by right vagus
both via the pharyngeal plexus
function of the musculus Uvulae
elevates the uvula
origin of the Levator Veli Palatini
inferior surface of the temporal bone
insertion of the Levator Veli Palatini
Aponeurosis of soft palate
nerve of the Levator Veli Palatini
Vagus Nerve (CN 10) via the pharyngeal plexus
function of the Levator Veli Palatini
elevates the soft palate
origin of the Tensor Veli Palatini
scaphoid fossa of the medial pterygoid plate, auditory tube
insertion of the Tensor Veli Palatini
the tendon winds around the pterygoid hamulus and inserts into the aponeurosis of the soft palate
nerve of the tensor Veli Palatini
mandibular division of trigeminal (CN 5)
function of the Tensor Veli Palatini
tenses soft palate
opens auditory tube (pressure equalizer)
what are the extrinsic muscles of the tongue?
genioglossus
hyoglossus
styloglossus
palatoglossus
origin of the Palatoglossus
soft palate
insertion of the palatoglossus
sides of the tongue
nerve of the palatoglossus
vagus nerve (CN 10) via the pharyngeal plexus
function of the palatoglossus
elevates the back of the tongue
what are the muscles located between the superior and middle constrictors?
Longitudinal layer of muscle
what are the muscles in the longitudinal layer?
stylopharyngeus muscle
palatopharyngeus muscle
Salpingopharyngeus muscle
origin of the Stylopharyngeus muscle?
styloid process
insertion of the stylopharyngeus muscle
thyroid cartilage, some fibers blend with those of the constrictors
nerve of the stylopharyngeus muscle?
Glossopharyngeal nerve (CN 9) -only one not innervated by CN 10
function of the stylopharyngeus muscle
elevates pharynx
origin of palatopharyngeus muscle
soft palate
insertion of the Palatopharyngeus
wall of pharynx
thyroid cartilage
nerve of the Palatopharyngeus muscle
Vagus nerve (CN10) via the pharyngeal plexus
function of the palatopharyngeus muscle?
elevates pharynx
narrows oropharynx