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Flashcards in Neuro Deck (258)
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1

Branchial Clefts are derived from

Ectoderm

2

Branchial Pouches are derived from

Endoderm

3

Branchial Arches are derived from

Mesoderm

4

1st Branchial Cleft produces

External auditory meatus

5

2-4 Branchial Clefts produce

temporary cervical sinuses

6

If the temporary cervical sinuses persists -->

Branchial Cleft cyst on the lateral neck (doesn't move w/ swallowing)

7

What other cyst may be confused w/ a Branchial Cleft cyst?

Thyroglossal cyst (midline, moves w/ swallowing)

8

1st Branchial Pouch produces

middle ear cavity, eustachian tubes, mastoid air cells

9

2nd Branchial Pouch produces

epithelial lining of the tonsils

10

3rd Branchial Pouch produces

thyroid & inferior parathyroid glands

11

4th Branchial Pouch produces

superior parathyroid glands

12

DiGeorge Syndrome

failure of the 3 & 4 branchial pouches to develop --> absent thymus & parathyroid glands --> T-cell immunodeficiency & hypocalcemia

13

1st Branchial Arch produces what cartilage

Meckel's cartilage: mandible, mandible ligament, malleus, incus

14

1st Branchial Arch produces what muscles

mm of mastication: masseter, medial/lateral pterygoids, temporalis, mylohyoid, Tensor tympani, Tensor veli palatini, ant. 2/3 of tongue

15

1st Branchial Arch produces what nerve

CN V2 & V3

16

Failure of Branchial Arch 1 cells to migrate

Treacher-Collins Syndrome

17

2nd Branchial Arch produces what cartilage

stapes, styloid process, stylohyoid ligament, lesser horn of hyoid

18

2nd Branchial Arch produces what muscles

mm. of facial expression: stapedius, stylohyoid

19

2nd Branchial Arch produces what nerve

CN 7

20

3rd Branchial Arch produces what muscle

stylopharyngeal m.

21

3rd Branchial Arch produces what nerve

glossopharyngeal n.

22

Failure of the 2nd Branchial Arch cells to migrate

Pharyngocutaneous Fistula

23

4-6 Branchial Arch produces what cartilage

Criocoid & Thyroid cartilages, & cartilage of the larynx

24

4-6 Branchial Arch produces what muscle

Cricothyroid, pharyngeal, laryngeal

25

4-6 Branchial Arch produces what nerve

CN 10

26

Prosencephalon develops into

telencephalon & diencephalon

27

Mesencephalon develops into

Midbrain

28

Rhombencephalon develops into

metencephalon & myelencephalon

29

Telencephalon develops into

Cerebral hemispheres

30

Diencephalon develops into

Thalamus