neurodevelopment Flashcards
what branchial arches form the anterior 2/3rd of the tongue?
1st and 2nd
what nerve provides sensation/pain to the anterior 2/3rd of the tongue?
trigeminal (V3 - mandibular )
what nerve provides taste to the anterior 2/3rd of the tongue?
CN VII (facial)
what branchial arches form the posterior 1/3rd of the tongue?
3rd and 4th
what nerve provides taste to the posterior 1/3rd of the tongue?
tast AND pain to the posterior 1/3rd of the tongue are from glossopharyngeal (CN IX)
very extreme posterior of tongue is via the vagus
what three CNs provide taste to the tungue?
VII, IX, X
what three CNs provide pain to the tungue?
V3, IX, X
what three CNs provide motor to the tungue?
X, XII
what nerve elevates the tongue durring swallowing? What muscle facilitates this?
Vagas - innervates the palatoglossus (located in posterior)
ONLY tongue muscle not innervated by hypoglossal nerve (CN XII)
what does the forbrain (prosencephalon) give rise to?
telencephalon (cerebral hemespheres and lateral ventricals) and diencephalon (thalamus, hypothalamus and third ventrical)
what does the midbrain give rise to?
mesencephalon - midbrain + cerebral aqueduct
what does the hid brain (rhombencephalon) give rise to?
metencephalon (pons, cerebellum and upper part of fourth ventrical) and the myelencephalon (medulla and lower part of fourth ventrical)
which secondary vesicle does the third ventrical arise from?
cavity of the diencephalon - wall forms the thalamus and hypothalamus
how can you remember the order of the 5 secondary vesicles?
descending alphabetical order
Top (telencephalon) Down (diencephalon), meS, meT, mYelen
what is the fate of the notocord in adults?
nucleus pulposus of disks
