Head and Neck Week 1- skull, face, bones and neck Flashcards
cranial suture joint type
fibrous
name for spongey bone in skull
diploe
where is the lamboid suture
at back, between parietal and occipital and temporal
what fontanelle closes first
posterior
what bones is the superior nuchal line a part of
occipital
what 2 bones form the zygomatic arch
zygomatic anteriorly
temporal posteriorly
5 layers of the scalp
Skin
Connective
Aponeurosis of occipital muscle- epicranial
Loos areolar connective
pericranium
epicranial layer of scalp connects…
frontal and occipital bellies of ocipitofromtalis
what does eyebrow do when: occipital and frontalis muscles move together
eyebrows rise
what does eyebrow do when: frontalis muscle moves alone
frowning
sensory nerve supply to the front of the head
trigeminal-
ophthalmic V1
maxillary V2
mandibular V3
sensory nerve supply to back of the head
anterior and posterior rami of cervical spinal nerves C2 + C3
what forms from the ventral rami of C5-T1
brachial plexus sensory and motor
what layer of scalp has blood vessels
dense connective
arterial origin supply to scalp
ECA
what artery is the superficial temporal a branch of
and where does it split
ECA
inside parotid gland
what are emissary veins
valveless veins where diploic veins of skull anastomose with scalp veins
lymph drainage of the scalp
no nodes
straight into lymph nodes of head and neck
where do the muscles of facial expression lie
in superficial fascia of the neck and face
functions of muscles of facial expression: orbicularis oculi palpebral part
close eyelids loosely
functions of muscles of facial expression: occipital frontalis
retracts scalp
functions of muscles of facial expression: orbicularis oculi orbital
close eye lids tightly
winking
functions of muscles of facial expression: frontlis
raises eyebrows
functions of muscles of facial expression: buccinator
presses cheeks against teeth while eating
functions of muscles of facial expression: platysma
Depresses mandible and angle of mouth,
tenses skin of lower face and anterior neck
functions of muscles of facial expression: orbicularis oris
shape lips
close mouth
resist blowing
what branch of facial nerve comes from anterior parotid
buccal
3 structures that pass into parotid
- facial nerve
2.external carotid artery - retromandibular vein
Which division of the autonomic nervous system would be secretomotor to the parotid
salivary gland?
which nerve supplies parasympthetic
and sympathetic
parasympathetic
glossopharyngeal CN IX
superior cervical ganglion
Which bone does the facial artery wind around to reach the face?
mandible
Where does the facial artery end?
medial aspect of the eye
what vein does the facial and superficial temporal vein drain to
IJV
Vertebral Compartment:
Cervical vertebrae and Postural muscles (Prevertebral &
Postvertebral muscles)
what do the Vascular Compartments contain (one on each side):
contains major blood vessels and the
vagus nerve
Visceral compartment:
contains thyroid, parathyroid glands (and part of thymus),
Pharynx, Larynx, Trachea & oesophagus
what are the compartments of the neck enclosed bt
musculofascial collar
joint type between occipital condyles and C1 atls
synocial condyloid
joint type between C1 and C2 odontoid peg
synovial pivot
What structures pass through the foramen transversarium? (hole in vertebrae) x3
vertebral artery and vein
plexus of sympathetic nerves.
What is the vertebra prominens?
vertebra- C7
prominens as its prominent spinous process is palpable through the skin
borders of anterior triangle
Superiorly – inferior border of mandible (jawbone).
Laterally – anterior border of sternocleidomastoid.
Medially – sagittal line down the midline of the neck- middle of neck
contents of anterior triangle
musclesx2
blood vessels x2
nerves x4
Suprahyoid
Infrahyoid muscles
common carotid artery- bifurcates into ECA and ICA
IJV
facial [VII],
glossopharyngeal [IX]
vagus[X]
accessory [XI]
hypoglossal [XII] nerves
7,9,10,11,12
border of posterior triangle
Anterior – posterior border of sternocleidomastoid.
Posterior – anterior border of trapezius
Inferior – middle 1/3 of the clavicle
contetnts of post triangle: main muscle, vein, nerves and plexuses
omohyoid
EJV
accessory and phrenic
brachial and cervical plexus
contents of posterior triangle
muscles x4
blood vessels x4
nerves x4
Omohyoid muscle and it’s 2 bellies
Splenius capitis
Levator scapulae
Anterior, middle and posterior scalenes
External jugular
subclavian, transverse cervical and suprascapular
vein/arteries
accessory nerve CN XI
phrenic nerve
cervical plexus C1-4
brachial plexus C5-T1
attachments of the sternocleidomastoid
STERNO-the manubrium of sternum
CLEIDO-the clavicle (-cleido-), and the mastoid
MASTOID- mastoid process of the temporal bone (-mastoid).
function of the sternocleidomastoid- what happens to head and face when right one is contracted
head would tilt right
face would turn left
actions of upper middle and lower trapezius
upper- elevate scapula
middle- retract scapula
lower- depress scapula
Which cranial nerve innervates the sternocleidomastoid and trapezius
and what triangle is it found
accessory CN XI
posterior
4 sub triangles of anterior triangle
submental
submandibular/digastric
carotid
muscular
sub triangles of ant triangle boundaries: submental
Inferiorly – hyoid bone.
Medially – midline of the neck.
Laterally – anterior belly of the digastric
sub triangles of ant triangle boundaries: submandibular/digastric
Superiorly – body of the mandible.
Anteriorly – anterior belly of the digastric muscle.
Posteriorly – posterior belly of the digastric muscle
sub triangles of ant triangle boundaries: carotid
Superior – posterior belly of the digastric muscle.
Lateral – medial border of the sternocleidomastoid muscle.
Inferior – superior belly of the omohyoid muscl
sub triangles of ant triangle contents: submental
submental lymoh
sub triangles of ant triangle contents: submandibular x3
submandibular gland (salivary)
submandibular lymph node
The facial artery and vein
sub triangles of ant triangle contents: carotid x4
common carotid artery which bifurcates into ECA and ICA
IJV
hypoglossal
vagus
sub triangles of ant triangle contents: muscular x4
infrahyoid muscles
the pharynx
thyroid
parathyroid glands.
sub triangles of ant triangle boundaries: muscular
Superiorly – hyoid bone.
Medially – imaginary midline of the neck.
Supero-laterally – superior belly of the omohyoid muscle.
Infero-laterally – inferior portion of the sternocleidomastoid muscle.
Which artery
is the common carotid artery a branch of on right and left
On the right side- Brachiocephalic trunk
On the left side- arch of aorta
what does all blood supply to head originate from
common carotid
what triangle does the common carotid run in
and what contains it
in the anterior triangle of the neck
within the carotid sheath.
contents of carotid sheath x3
CCA
jugular vein
vagus nerve
what level does the common carotid devide
C4
what branch of common carotid gives off branches in the neck
ECA
what branch of common carotid is most lateral
ICA
What are the two terminal branches of the ECA
and within which gland
maxillary
superficial temporal arteries
parotid gland
where does the IJV emerge from
and where does that inturn sit
jugular venous sinus
juguar foramen
Which vein of the upper limb does the IJV merge with
and what is the name of the vein that is formed?
subclavian
brachiocephalic