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Step Up Fam > Pharyngeal Derivatives > Flashcards

Pharyngeal Derivatives Flashcards

1
Q

Pharyngeal Arch 1:

Cartilage Derivatives

A

The M’s and T’s

  • Maxillary process
    • Maxilla
    • zygoMatic bone
  • Mandibular Process
    • Meckel cartilage
    • Mandible
  • Malleus
  • Incus
  • sphenoMandibular ligament
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2
Q

Pharyngeal Arch 1:

Muscle Derivatives

A

The M’s and T’s

  • Muscles of Mastication
    • Masseter
    • Medial ptyregoid
    • Lateral ptyregoid
    • Temporalis
  • Myelohyoid
  • tensor Tympani
  • Tensor Veli Palantini
  • Anterior Belly of the Digastric
  • Ant 2/3 of Tongue
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3
Q

Pharyngeal Arch 1:

Nerve Derivatives

A

The M’s and T’s

  • Mandibular branch of Trigem V3
  • Maxillary branch of Trigem V2
  • (Chew)
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4
Q

Pharyngeal Arch 2:

Cartilage Derivatives

A

S Structures

  • Stapes
  • Styloid Process
  • Stylohyoid Ligament
  • Lesser horn of hyoid
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5
Q

Pharyngeal Arch 2:

Muscle Derivatives

A

S Structures

  • Muscles of facial expression
  • Stapedius
  • Stylohyoid
  • platySma
  • posterior belly of digastric
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6
Q

Pharyngeal Arch 2:

Nerve Derivatives

A

S Structures

  • CN Seven (facial expression Smile)
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7
Q

Pharyngeal Arch 3:

Cartilage Derivatives

A

Think Pharyngeal

  • Greater horn of hyoid
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8
Q

Pharyngeal Arch 3:

Muscle Derivatives

A

Think Pharyngeal

  • Stylopharyngeus
  • (forms posterior 1/3 of tongue with Arch 4)
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9
Q

Pharyngeal Arch 3:

Nerve Derivatives

A

Think Pharyngeal

  • Glossopharyngeal (CN 9) (innervates stylopharyngeous; swallow Styl-ishly
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10
Q

Pharyngeal Arch 4:

Cartilage Derivatives

A

Think Cricoid, Thyroid, and Larynx

This also forms structures in conjunction with Arch 6

  • Arytenioids
  • Corniculate
  • Cuniform
  • Cricoid cartilage
  • Thyriod cartilage
  • Cartilage of larynx
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11
Q

Pharyngeal Arch 4:

Muscle Derivatives

A

Think Cricoid, Thyroid, and Larynx

  • Cricothyroid muscles
  • Pharyngeal Muscles (pharyngeal constrictors) (Swallowing)
  • Levator veli palatini
  • (forms posterior 1/3 of tongue with Arch 3)
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12
Q

Pharyngeal Arch 4:

Nerve Derivatives

A

Think Cricoid, Thyroid, and Larynx

This also forms structures in conjunction with Arch 6

  • CN 10 (4+6=10)
    • Superior Laryngeal
    • (Simply Swallow)
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13
Q

Pharyngeal Arch 5:

Cartilage Derivatives

A

THIS ARCH DOES NOT DEVELOP/PROGRESS

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14
Q

Pharyngeal Arch 5:

Muscle Derivatives

A

THIS ARCH DOES NOT DEVELOP/PROGRESS

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15
Q

Pharyngeal Arch 5:

Nerve Derivatives

A

THIS ARCH DOES NOT DEVELOP/PROGRESS

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16
Q

Pharyngeal Arch 6:

Cartilage Derivatives

A

Think Cricoid, Thyroid, and Larynx

This also forms structures in conjunction with Arch 4

  • Arytenioids
  • Corniculate
  • Cuniform
  • Cricoid cartilage
  • Thyriod cartilage
  • Cartilage of larynx
17
Q

Pharyngeal Arch 6:

Muscle Derivatives

A

Think Cricoid, Thyroid, and Larynx

  • Rest of Laryngeal Muscles (speech) not formed by Arch 4
  • I.E. All intrensic muscles of the larynx EXCEPT CRICOTHYROID
18
Q

Pharyngeal Arch 6:

Nerve Derivatives

A

Think Cricoid, Thyroid, and Larynx

This also forms structures in conjunction with Arch 4

  • CN 10 (4+6=10)
    • Reccurent laryngeal
    • Speak
19
Q

1st Pharyngeal Cleft Derivatives

A
  • External auditory meatus
20
Q

2nd Pharyngeal Cleft Derivatives

A
  • Temporary Cervical Sinuses
    • With the 3rd and 4th Clefts
    • (are eventually obliterated by proliferation of 2nd arch mesenchyme)

(If persistant → Branchial Cleft Cyst in lateral neck; anterior to sternocleidomastoid muscle and immobile during swallowing (contrasting to Thryoglossal Duct Cyst which is midline and mobile w/ swallowing))

21
Q

3rd Pharyngeal Cleft Derivatives

A
  • Temporary Cervical Sinuses
    • With the 2nd and 4th Clefts
    • (are eventually obliterated by proliferation of 2nd arch mesenchyme)\

(If persistant → Branchial Cleft Cyst in lateral neck; anterior to sternocleidomastoid muscle and immobile during swallowing (contrasting to Thryoglossal Duct Cyst which is midline and mobile w/ swallowing))

22
Q

4th Pharyngeal Cleft Derivatives

A
  • Temporary Cervical Sinuses
    • With the 2nd and 3rd Clefts
    • (are eventually obliterated by proliferation of 2nd arch mesenchyme)

(If persistant → Branchial Cleft Cyst in lateral neck; anterior to sternocleidomastoid muscle and immobile during swallowing (contrasting to Thryoglossal Duct Cyst which is midline and mobile w/ swallowing))

23
Q

1st Pharyngeal Pouch Derivatives

A
  • Middle Ear Cavity
  • Eustachian tubes
  • Mastoid air cells

(contributes to the endoderm lined structures of the ear)

24
Q

2nd Pharyngeal Pouch Derivatives

A
  • Epithelial lining of the palatine tonsils
25
Q

3rd Pharyngeal Pouch Derivatives

A
  • Dorsal wings
    • Inferior parathyroid glands
  • Ventral wings
    • Thymus
26
Q

4th Pharyngeal Pouch Derivatives

A
  • Dorsal Wings
    • Superior Parathyroid glands
  • Ventral Wings
    • Ultimobranchial body
    • Parafollicular (C) Cells of the Thyroid
27
Q

1st Aortic Arch

A
  • Part of Maxillary artery
    • (a branch of the external carotid)

(1st arch is MAXimal)

28
Q

2nd Aortic Arch

A
  • Stapedial artery
  • Hyoid artery

(Second = Stapedial)

29
Q

3rd Aortic Arch

A
  • Common Carotid artery
  • Proximal part of Internal Carotid artery

(C is the 3rd letter of the alphebet)

30
Q

4th Aortic Arch

A
  • On Left
    • Aortic Arch
  • On Right
    • Proximal part of Right Subclavian

(4th arch (4 limbs) = Systemic)

(Right recurrent Laryngeal nerve loops around proximal right sublavian from 4th)

(Left recurrent Laryngeal nerve loops around aortic arch DISTAL to ductus arteriosus (not sure if that portion of the arch is from 4th)

31
Q

6th Aortic Arch

A
  • Proximal part of pulmonary arteries (part proximal to that is from truncus arteriosus)
  • Ductus arteriosus

(6th arch = pulmonary and the pulmonary to systemic shunt)

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