Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

H+N > pharyngeal > Flashcards

pharyngeal Flashcards

1
Q

What is the foregut divided into

what organs arise

A

Cranial part- oral cavity proper
-SM and SL salivary glands
-Pharyngeal apparatus
- respiratory system

Caudal part- oesophagus
- stomach
- duodenum up to opening of CBD
- liver, pancreas, gall bladder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many pharengyl arches are there

A

6 but 5th disappaers

by week 4: 6th is rudemntiary so theres 4 arches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does each pharengyl arch contaim

A

artery, nerve, cartilage, mesecgymal core, pharengyl cells and arches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where do the first three arches develop from

A

neural crest cells.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

where do the 4-6th arches develop from

A

lateral plate mesoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is derived from 1st cartilage

meckels

A

Incus
malleus
anterior ligament of malleus
Spine of sphenoid
sphenomandibular ligament.
Genial tubercles of mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What comes from the 2nd arch cartilage

A

Stapes
styloid process
stylohyoid ligament,
smaller cornue of hyoid bone
superior half of body of hyoid bone.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What comes from third arch cartilage

A

Greater cornue and remaining lower part of
body of hyoid bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What comes from 4th -6th arches

A

Cartilages of larynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Nerve supply arch 1

A

chorda tympani is a pretrematic branch

runs along caudal border

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Nerve supply arch 2

A

facial (CN7)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Nerve supply arch 3

A

Glossopharengyl (CN9)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Nerve supply arch 4

A

superior laryngeal
nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Nerve supply arch 6

A

recurrent laryngeal
nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Muscles dervied arch 1

eight muscles -> name innervation

A

muscles of mastication:
Masseter.
Temporalis.
Lateral pterygoid.
Medial pterygoid.

mylohyoid
anterior belly of digastric
tensor palati
tensor tympani

innervated by mandiubular nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Muscles derived arch 2

name nerve

A

Muscles of facial expression
Frontalis
Nasalis
Orbicularis oris
Buccinator
Depressor anguli oris

platysma
stylohyoid
posterior belly of digastric
stapedius.

innervated by facial nerve

named a few facial expression muscles

17
Q

Muscles dervived arch 3

muscle + innervation

A

Stylopharyngeus

glossopharyngeal nerve

18
Q

muscles from arch 4 + 6

A

Muscles of palate except tensor
palati
Muscles of pharynx except stylopharyngeus
Muscles of larynx

innervated by vagus

19
Q

what comes from 1st pharengyl cleft

A

external auditory
meatus and canal, outer
surface of tympanic
membrane

20
Q

what congential abnromalties can you get with the clefts

A

Branchial cyst
internal opening of the branchial sinuses arising from incomplete removal in embryogenesis

  • Branchial sinus
  • Branchial fistula

A complete fistula is a tract that has an internal opening and an external opening

21
Q

pharengyl pouches derivatives

1-4

A

pouch 1: auditory tube + middle ear
Pouch 2: palatine tonsils
pouch 3:parathyroid gland inferior + thymus
Pouch 4: parathyroid superior + ultimobrachial body

Develop in a cranio-caudal sequence
5th rudiemntary

22
Q

How does external ear devlop

A

idk

23
Q

First arch syndrome (mandibulofacial dysostosis)

A
  • Due to failure of proper neural crest cells migration.
  • Various congenital malformations of eyes, ears, mandible, palate
24
Q

Di-George syndrome- CATCH 22

A

-22q11 deletion
-Improper neural crest cells migration into 3rd and 4th arch

-Cardiac defects (aorticopulmonary septation defects)
Facial abnormalities ,
Thymic aplasia/hypoplasia,
Cleft palate
hypocalcemia due to parathyroid aplasia/hypoplasia

25
Q

How does the thyroid develop?

A

thyroid gland originates from an endodermal outgrowth called the thyroid diverticulum,

descends from the primitive pharynx to its final position in the neck

It becomes bilobed and connected by an isthmus,

pharyngeal floor formed by fusion of ventral part of arches and pouches

26
Q

Where do follicular cells and parafollicualr cells arise from

A

FC: endoderm of thyroglossal duct

PFC: neural crest cells

27
Q

What congential anomalies can arise as a result of thyroid developmenyt

A
28
Q

Development of tongue

A

missing

29
Q

Development anomlies of tongue

A

H+N (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions