Pharyngeal apparatus and dev. Flashcards
What are the other names of the ear ossicles(ear bones)
stapes- stirrups
Malleus - Hammer
Incus - Anvil
What cartilage is responsible for the development of the malleus and stapes
Meckels Cartilage
What cartilage is responsible for the development of the stapes
The reicherts cartilage
What are the two portions of the 1st Pharyngeal Arch
The maxillary Process
The mandibuar process
Which cartilage is associated with the first pharyngeal arch
Meckel’s cartilage
What nerve develops from pharyngeal arch 1
The trigeminal nerve
What are the muscles that develop from the first pharyngeal arch
The Muscles of mastication
The Mylohyoid
The Anterior Belly of the digastric
Tensor veli palatini
Tensor Tympani
Mnemonic MAT (MMATT)
What artery develops from the first pharyngeal arch
The Maxillary Artery
What are the bones that develop from the first Pharyngeal arch
Malleus, Incus
Mandible
Maxilla
Temporal Bone
Zygomatic Arch
What causes the first arch syndrome
The insuffiecient migration of neural crest cells to pharyngeal arch one
What are the two manifestations of the First Arch syndrome
Treacher Collins Syndrome
Pierre Robin Syndrome
A 2-day-old newborn is brought to the neonatal unit due to difficulty in breathing and poor feeding. The baby was born at term via vaginal delivery without complications. On physical examination, you observe micrognathia, glossoptosis, and a cleft palate. The infant exhibits signs of upper airway obstruction, especially when supine.
- What is the most likely diagnosis?
- which Pharyngeal arch is most likellly affected
- Pierre Robins Syndrome
- Pharyngeal Arch 1
The second pharyngeal arch is also known as as
Hyoid arch
Which cartilage is associated with the second pharyngeal arch?
Reichart’s cartilage
What bones are derived from Pharyngeal arch 2
The stapes,
the styloid process of the temporal bone
The Hyoid Bone(The lesser Horn)
What cranial Nerve is derived from Pharyngeal arch 2
Cranial Nerve VII
What arteries are derived from the pharyngeal arch 2
Stapedial and hyoid Arteries
What muscles develop from the 2nd Pharyngeal arch
They are 5
The Facial Muscles
The stapedius Muscles
The Auricularis Muscles
The posterios belly of the digastric
The stylohyoid Muscles
What muscle develops from the 3rd pharyngeal arch
Stylopharyngeus
What are the bony derivatives of the 3rd pharyngeal arch
The greater horn of the hyoid bone and the lower part of the body
Which pharyngeal arch does the left and right pulmonary arteries develop from
Pharyngeal Arch
Where do neural crest cells develop from in the hindbrain?
rhombere
Migration of neural crest cells is controlled by which genes?
HOX genes
What does the 2nd to 4th pharyngeal clefts form
Cervical Sinus
