Embrylogy Unit III Flashcards
T/F - The first pharyngeal arch is also called the maxillary arch.
FALSE
A portion of the neural tube is transiently divided into segments termed:
Rhombomeres
How many pharyngeal clefts are present once the final number of pharyngeal arches has been established?
ONE
The facial nerve innervates the orbicularis oris muscle of the face, a derivative of the 1st pharyngeal arch.
FALSE
Taste buds in the anterior 2/3 rds of the tongue are innervated by __________
The facial nerve
Olfactory sensory neurons arise from:
nasal placodes located within the nasal pits
At 5 weeks gestation, the face is comprised of how many facial primordia?
FIVE
Embryonically, the primary palate gives rise to the hard palate, and the secondary palate gives rise to the soft palate.
FALSE
Which branch(es) of the facial nerve is (are) responsible for eye closure?
Temporal Branch and Zygomatic Branch
Which is not part of the middle ear?
Cerumen glands
Cleft lip and palate result when there is a lack of closure of the palatal shelves.
FALSE
Which nerve is responsible for tongue protrusion?
XII
The lateral cricoarytenoid (muscle derivative) corresponds to which arch?
4th arch
The stylohyoid (muscle derivative) corresponds to which arch?
2nd arch
The tensor tympani (muscle derivative) corresponds to which arch?
1st arch
