Module 8 Flashcards
The tongue begins to develop at about ___ weeks
Four
This nerve provides special sensory nerve to the anterior two-thirds of the tongue
Facial nerve CN VII
Also known as the body of the tongue
Anterior two-thirds
Also known as the base of the tongue
Posterior one-third
This nerve provides sensory nerve to the posterior third of the tongue
Glossopharyngeal nerve CN IX
This nerve innervates the base of the tongue
Vagus nerve CN X
True or false: The posterior part is more movable than the anterior part
False; The ANTERIOR part is more movable than the POSTERIOR part
The anterior part of the tongue extends to a V- shaped groove called the _______.
Terminal sulcus/ Sulcus terminalis
The apex of the ______ points towards the epiglottis
Terminal sulcus/ Sulcus terminalis
The posterior part of the tongue develops from the _____ and _____ branchial arches.
Second and Third
These two mounds of tissues merges to form the anterior two-thirds of the tongue.
Lateral lingual swellings and Tuberculum impar
What pharyngeal arch makes no contribution to the tongue?
Second
The posterior 1/3 of the tongue develops from this structure
Hypobranchial eminence (hypopharyngeal eminence)
The sulcus terminalis represents the line of fusion between the epithelium covering the ____ and ____ pharyngeal arches
First and Third
A midline depression at the apex of the sulcus terminalis, foramen caecum, marks the origin of the ________.
Thyroid gland