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Anatomy Exam 2 > Pharyngeal Arches > Flashcards

Pharyngeal Arches Flashcards

1
Q

Which nerve is the first arch derived from?

A

Trigeminal

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2
Q

What two arteries come from arch 6?

A
  • Ductus arteriosus
  • Pulmonary arteries
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3
Q

What is this a derivative of?

Laryngeal cartilages

A

4 and 6

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4
Q

• 3rd arch artery forms part of the ______

A

common carotid artery

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5
Q

What bone forms around meckel’s cartliage?

A

Mandible

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6
Q

What muscles are these muscles derived from?

  • Mastication: temporalis, masseter, medial and lateral pterygoids
  • Mylohyoid
  • Ant Belly of Digastric
  • Tensor Veli Palatini
  • Tensor Tympani
A

Arch 1: Mandibular

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7
Q

What is the first medodermal derivative to appear?

A

Aoritc arch artery

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8
Q

What artery comes from the first arch?

A

Maxillary

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9
Q

What are some derivatives of Meckel’s caritlage?

A
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10
Q

What arch is this muscle a derivative of?

  • Stylopharyngeus
A

3rd

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11
Q

What arch are these anomalies of?

  • Congenital laryngeal stridor
  • Laryngomalacia
    • malformed larynx
    • weak larynx muscles
    • stridor- high pitched sound during inspiration
A

4 and 6

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12
Q

• 4th arch artery forms ______

A

arch of the aorta

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13
Q

What two arteries are derivatives of pharngeal arch 4?

A

Aortic arch

R subclavian

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14
Q

What nerve is the 2nd pharngeal arch formed from?

A

Facial nerve

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15
Q
A
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16
Q

What are these examples of?

A

Branchial cysts and fistulas

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17
Q

In 4th pouch derivatives what body fuses with the thyroid gland and contributes parafollicular cells that produce calcitonin, a hormone that regulates calcium levels

A

Utimobranchial body

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18
Q

What nerve is the 3rd pharngeal arch a derivative of?

A

Glossopharyngeal

19
Q

What arch are these anomalies from?

  • Hyoid malformation
  • Muscular asymmetry of the face
  • Conductive hearing loss
    • malleus, incus, stapes defects
  • Microtia
A

2nd arch

20
Q

What arch forms from the maxillary and mandibular prominence?

A

Arch 1

21
Q

What artery is from the 3rd pharngeal arch?

A

Common and internal carotid

22
Q

What pouch are these derivatives of?

  • Tympanic cavity
  • pharygotympanic tube
  • mastoid antrum
A

Pouch 1

23
Q

What arch are these derived from:

Intrinsic laryngeal muscles

A

Arch 6

24
Q

The hindbrain is “segmented” into compartments called

A

rhombomeres

25
Q

What is the membrane where pouches meet clefts?

A

Pharngeal membranes

Made of ecto and edoderm

26
Q

What arch are these muscles a derivative of?

  • Pharyngeal constictors
  • cricothyroid
  • levator veli palatini
A

4

27
Q

Anonamilies that primarily affect blood vessels comes from which arch?

A

3rd because of common carotid artery

28
Q

What pouch are these derivatives of?

  • Palatine (tonsillar) fossa
    • largely obliterates pouch
  • tonsilar sinus
    • depression between the palatoglossal and palatopharngeal arches
A

Pouch 2

29
Q

What arch are these muscles derived from:

  • Facial expression
  • post belly of digastric
  • stylohyoid
  • stapedius
A

2nd arch: Hyoid

30
Q

What artery comes from the second pharngeal arch?

A

Stapedial

31
Q

What pouch are these derivatives of?

  • inferior parathyroid glands
  • thymus
A

Pouch 3

32
Q

What arch are these bones derivived from?

  • Stapes
  • Styloid process
  • stylohyoid lig
  • lesser horn and upper body of hyoid bone
A

2nd arch: Hyoid

33
Q

What arch are these parts of the skeleton derived from?

  • Maxilla
  • Mandible
  • Greater wing of sphenoid
  • Zygomatic bone (squamous part)
  • Temoral bone
  • Meckel’s cartilage
    • Ant. Lig. of malleus
    • Sphenomandibular ligament
  • Incus
  • Malleus
A

Arch 1: Mandibular

34
Q

What nerve is the 6th arch a derivative of?

A

Vagus (inferior and recurrent laryngeal)

35
Q

What arch are these abnormalities from?

  • Malformations of eyes, ears, palate and mandible
  • critical period is week 6-7
  • abnormalities are symmetrical and bilateral
  • Failure of neural crest cell migration leads to defects or loss of musculoskeletal derivatives
A

Arch 1

36
Q

What is this syndrome?

A

DiGeorge Syndrome

37
Q

What is this syndrom?

A

Treacher Collins Syndrome

38
Q

• 6th arch artery forms ______

A

pulmonary artery

39
Q

What separates arches on the endodermal (inner side)?

A

Pharngeal pouches

40
Q

What nerve is the 4 arch a derivative of?

A

Vagus (superior laryngeal)

41
Q

What pouch are these derivatives of?

  • superior parathyroid glands
  • parafollicular cells of thyroid
A
42
Q

What arch are these bones a derivative of?

  • greater and lower body of hyoid bone
A

3rd

43
Q

What seperates arches on the ectodermal (outer) side?

A

clefts

Anatomy Exam 2 (18 decks)

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