Module 2 Flashcards
what is not found in the boundary between oral cavity proper and oropharynx?
Palatopharyngeal fold (it’s within oropharynx)
When is palate and upper lip fusion?
Week 6 (altho upper lip form w6, palate form w7)
wt fusion failure is unilateral/bilateral/non-midline cleft LIP about?
Fusion of medial nasal process and maxillary process
what fusion failure is midline cleft lip about?
Fusion of 2 medial nasal processes
Wt fusion failure is cleft PALATE about?
Fusion of medial nasal process and maxillary process (similar to non-midline cleft lip)
wts the gender + prevalence situation for cleft lip and palate respectively?
Cleft lip: more MALE,
Cleft palate: more FEMALE
they are both 1:700
Wts % of brain volume for grey and white matter?
Grey matter 40%
White matter 60%
What’s the function of grey and white matter?
Grey: process and integrate info
White: transmit info between grey matter regions
massater muscle attachments, actions, nerve
Superficial head: ant 2/3 zygomatic arch, maxillary process -> inf ramus, mandibular angle
Deep head: post 1/3 zygomatic arch -> sup ramus, coronoid process
elevation, protrusion
Nerve: masseteric branch (trigeminal nerve CNV/3, mandibular branch, ant div)
Temporalis muscle: attachment, action, nerve
Temporal fossa/ inf temporal line -> ant ramus, coronoid process
Elevation, retrusion
N: temporal branch (trigeminal nerve cn v/3, mandibular branch, ant div)
Which tongue muscle can perform sucking action?
hyoglossus muscle (hyoid bone - tongue side)
Lateral pterygoid muscle: attachment, action, nerve
Upper head: sphenoid -> TMJ, mandibular neck
Lower head: lateral side of lateral pterygoid plate -> mandibular neck, pterygoid fovea
DEPRESSION, protrusion, lateral movement
N: Lateral pterygoid branch (cnv/3, ant div)
Medial pterygoid muscle: attachment, action, nerve
Superficial head: maxillary tuberosity, pyramidal process (palatine bone) -> ramus, mandibular angle
Deep head: medial aspect of lat pterygoid plate (sphenoid) -> ramus, mandibular angle
ELEVATION, protrusion, lateral movement
N: medial pterygoid branch (cn v/3, ant div)
Wt is the main function for zona pellucida?
Prevent premature implant, protect egg, regulate sperm binding
Wt is trophoblast forming?
Placenta
What is formed in bilaminar formation in week 2?
Embryoblast/ Inner cell mass ->
Epiblast (yolk sac),
Hypoblast (amniotic cavity)
Which of the following structures is not part of the ethmoid bone?
Inferior nasal concha
Perpendicular plate
Middle nasal concha
Crista galli
Cribriform plate
Inferior nasal concha
