Neck Flashcards
Borders of pharynx
base of skull to upper esophageal sphincter
attachent point of pharynx muscles
midline raphe
innervation of pharynx
CN10 - vagus
attachment of inf pharyx constrictor
thyroid and cricoid to raphe
attachment of mid pharyx constrictor
hyoid to raphe
innervation of stylopharyngeous
CN9- glossopharyngeal
3 regions of pharynx and sensory innervations
- Oro - V2
- Naso - CN9
- Laryngeo - CN10
5 features of oropharynx
- pharyngeal tonsil (adenoid)
- Torus
- Opening of eustacian tube
- Salpingopharyngeal fold
- Tubal tonsil
5 features of oropharynx
- glossoepiglottic folds
- valleculae
- lingual tonsil
- palatine tonsil
- tonsilar ring of waldeyer
2 features of laryngeopharynx
- piriform fossa
2. aryepiglottic folds
Point where food gets stuck in pharynx
vallecula
2 folds in larynx
- vestibular - false
2. vocal - true
Area between folds
ventricle
membrane making up false fold
quadrangular
Main muscles of larynx and their function
- post. cricoarytenoid - only abductor
2. cricothyroid - tilts cartelage forward
Suprahyoid muscles and their innervation (3)
- mylohyoid - V3
- stylohyoid - CN7
- digastric - Cn 7 and V3
Infrahyoid muscles and their innervation (4)
- sternohyoid
- omohyoid
- sternothyroid
- thyrohyoid
All cervical spinal nerves
Innervation of intrinsic larynx muslces (motor and sensory)
- Motor - reccurent laryngeal except cricothyroid (external laryngeal)
- Sense - Above folds - internal laryngeal
below folds - reccurent laryngeal
Blood supply to larynx
common carotid> inf and sup thyroid As
venous drainage of larynx (2)
- sup and mid thyroid veins>internal jugular
2. inf thyroid veins>R brachiocephalic
fascia encircling neck
investing fascia
muscle superficial to investing layer
platysma
3 compartments of neck and covering
- Neurvascular - carotid sheath
- visceral - pretracheal fascia
- vertebral - prevertebral fascia
Contents of vertebral comp (4)
- cervical vert and muscles
- vert arteries
- phrenic nerve
- cervical chain and ganglia