mjl1717
Forum Hero
Topics: 959
Posts: 5,467
|
What are the derivatives of the First pharyngeal Arch?
___________________
Smell the coffee! "Is That an Osler move??"
|
| richa P
Forum Newbie
Topics: 4
Posts: 12
|
which arch I or III?
I arch derivatives:-
Cartilage :- Meckels cartilage
Nerve:-Trigeminal (V cranial nerve)
Muscles:- muscles of mastication -masseter,temporalis,medial and lateral pterygoids,mylohyoid,ant belly of digastric
tensor tympani,tensor veli palatini
Skeletal structures- Dorsal end of first pharyngel arch- malleus, incus
vental end - horse shoe shaped primordium of mandible
Ligaments:- ant ligament of malleus , sphenomandibular ligament
Artery :- disappears
Derivatives of III arch
Nerve- Glossopharyngeal (IX cranial nerve )
Muscles- stylopharyngeus
Skeletal structures:-Larger Cornu of hyoid bone
lower part of body of body of hyoid bone
Ligament :- ---
Artery:- Common and internal carotid
Please do correct me if i am wrong anywhere.
___________________
the bright side of the moon..
|
| kool2004
Forum Newbie
Topics: 0
Posts: 11
|
Are nerves derive from pharygeal arch or grow into the arch?
|
| mjl1717
Forum Hero
Topics: 959
Posts: 5,467
|
The cranial nerves are separate:
CN-V and CN-VII motor comes from the rostral pons/sensory is from
cranial neural crest.
CN-IX and X-motor-motor is basal plate of the medulla/sensory is from
cranial neural crest.
These are cranial nerves of branchiomeric origin!
For Pharyngeal Arch I also add MAXILLA, ZYGOMATIC SQUAMOUS PART
OF TEMPORAL BONE, PALATINE VOMER=.{MAXILLARY PROMINENCE}
___________________
Smell the coffee! "Is That an Osler move??"
|
| BumbleB
Forum Junior
Topics: 2
Posts: 83
|
Mandibular nerve (V3) = 1st arch
Facial nerve = (VII) = 2nd arch
Glossopharyngeal (IX) = 3rd
am I correct here?
|
| mjl1717
Forum Hero
Topics: 959
Posts: 5,467
|
Pharyngeal arches simply cranial nerves 5,7,9,10--5,7,9,10--5,7,9,10!
___________________
Smell the coffee! "Is That an Osler move??"
|
| kool2004
Forum Newbie
Topics: 0
Posts: 11
|
Thanxs for replying mjl1717....cleared my point....
|
| BumbleB
Forum Junior
Topics: 2
Posts: 83
|
I think people say we only "have to know" the derivatives of also pharyngeal pouches and grooves #1? I'm kinda clueless in embryo - so any mnemonics would be appreciated there...I think pouch number one is involved in ear formation?
|
| mjl1717
Forum Hero
Topics: 959
Posts: 5,467
|
tubotympanic recess, eustachial tube, middle ear cavity, mastoid.
{No easy way that I know only hard core memorization!}
___________________
Smell the coffee! "Is That an Osler move??"
|
|
| |
| | | | | | | | | |
