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Flashcards in 3. Pharyngeal Arch Devel Deck (53):
1

3 components of the pharyngeal complex

CAP: cleft, arches, pouch

2

Component of the pharyngeal complex that includes skeletal, muscular, nerve, artery

Arch

3

Component of the pharyngeal complex that includes external features

Clefts

4

Component of the pharyngeal complex that includes internal features

Pouches

5

Neural crest cells derived from __ from arches 1-2 migrate to the face to give rise to bone and cartilage

Mesenchyme

6

This embryological tissue forms the facial skeleton

Neural crest cells

7

This embryological tissue will become posterior neurocranium and basicranium

Mesoderm

8

The migrating neural crest in the first arch include the formation of ___ which eventually becomes the malleus, incus, and mandible

Meckel's cartilage

9

The developing face (including frontonasal and maxillary and mandibular portions) are all derived from which pharyngeal arch

1

10

Dorsal. To the first. Arch is an elevation formed by __ which is the sensory ganglion for nerve supplying all tissue from first arch

Trigeminal ganglion

11

Name for the embryological opening that will become the mouth

Stomodeum

12

A nasal cavity is derived from these embryological depressions

Nasal placodes

13

What 3 prominences need to meet for normal formation of the upper lip

Nasomedial, nasolateral, maxillary

14

Muscles of mastication are derived from which pharyngeal arch

1

15

Muscles of facial expression are derived from which pharyngeal arch

2

16

What muscle is a derivative of pharyngeal arch 3

Stylopharyngeus

17

Levator veli palatini, pharyngeal muscles, intrinsic muscles of larynx are all derived from which pharyngeal arch

4, 6

18

Temporalis, masseter, mylohyoid, and anterior belly of digastric are all muscles os __ and derived from pharyngeal arch __

Mastication, 1

19

Buccinator, orbicularis oris, posterior digastric, and platysma are all muscles of __ and derived from pharyngeal arch __

Facial expression, 2

20

Arch 1 features are innervated by

Trigeminal (V3)

21

Derivatives of arch 2 are innervated by

Facial nerve

22

Derivatives of arch 3 are innervated by

Glossopharyngeal

23

Derivatives of arch 4 are innervated by

Vagus

24

The pharyngeal region of a developing embryo surrounds the __ which will develop into upper respiratory and digestive systems

Foregut

25

This transcription factor makes the tongue mobile and moves it out of the way so the 2 pieces of maxilla may fuse

Tbx22

26

Signal that directs location of palatal shelves

Bone morphogenic proteins (BMP)

27

Signal that directs early induction of facial primordia helping palatal shelves to fuse

Shh

28

Condition where tbx22 is mutated and frenulum of tongue connects in anterior oral cavity

Ankyloglossia

29

Separation. Or opening. In structure of. The. Face (derivatives of arch 1)

Oro-facial cleft

30

Condition resulting in open communication between oral. And nasal cavities requiring bone grafts and orthodontic treatment

Complete cleft palate

31

This structure carries the upper central 4 teeth and is unattached in the case of complete cleft palate, bilateral

Premaxilla

32

When there is hypoplasia or incomplete fusion of maxillary and mandibular prominences it results in lateral facial clefts which present as large mouth also known as

Macrostomia

33

Underdevelopment of structures associated with arch 1: downward slant to eyes, small mandible, autosomal dominant disease found on chromosome 5

Treacher-collins syndrome

34

disease involving Severe underdevelopment of the mandible, tongue cannot move downwards and often this results in airway obstruction or cleft palate

Pierre robin sequence

35

Cartilage that develops into the skeletal elements of arch 2

Reichert's

36

Stapes, styloid process, hyoid bone, and stylohyoid ligament are all derivatives of which pharyngeal arch

2

37

Derivatives of which pharyngeal arch becomes laryngeal carilage

4, 6

38

The first pharyngeal cleft deepens to. Form what adult. Structures

External auditory meatus and canal

39

The first pharyngeal pouch becomes the

Auditory tube

40

Between the first pouch and cleft lies what adult structure

Tympanic membrane

41

Underneath the endoderm of the second pouch develops depressions and mesoderm here differentiates into lymph tissue that is called what

Palatine tonsils

42

dorsally Pouch 3 develops into the

inferior Parathyroid glands

43

Ventrally the 3rd pouch differentiates into

Thymus gland

44

The 4the parathyroid gland is derived from pharyngeal pouch #___ and ends up superior to parathyroid glands 1-3

4

45

The fourth pouch gives rise to an ultimobranchial body which differentiates into what type of cells that produce calcitonin

Parafollicular cells

46

Chromosomal deletion with hypoparathyroidism/ hypoplastic/ absent thymus (low blood ca) resulting in immune problems, heart defects, learning difficulties

Digeorge syndrome

47

This structure comes from pharygeal arches 1-3 and muscles of occipital somites

Tongue

48

Base of tongue derives from which pharyngeal arch

Third

49

Intrinsic muscles of the. Tongue innervated by.

Hypoglossal n.

50

Posterior 1.3 of the tongue is innervated by __ n. For taste and sensation

Glossopharyngeal

51

Anterior 2.3 of the tongue is innervated by ___ for sensation and __ for taste

Trigeminal, facial

52

The thyroid does. Not come from a pharyngeal. Pouch but rather from a __. Forming from endoderm in the floor of the pharynx then migrates anterior to the trachea

Diverticulum

53

Ectopic thyroid tissue can present as cysts that may rupture which is termed

Thyroglossal fistula