Pharyngeal arch, pouch, and cleft derivatives and their associated congenital defects tested on USMLE Step 1.
32 cards · basic cards · AI-written, checked twice. Edit anything.
- Which cartilage gives rise to skeletal structures of the 1st pharyngeal arch?
- Meckel's cartilage
- Which cranial nerve supplies the 1st pharyngeal arch?
- CN V (trigeminal), mainly the mandibular division V3
- Which two ear ossicles derive from the 1st pharyngeal arch?
- Malleus and incus
- What major muscle group derives from the 1st pharyngeal arch?
- Muscles of mastication
- Which facial bone derives from 1st arch cartilage?
- Mandible
- Which 1st arch muscle dampens sound by tensing the tympanic membrane?
- Tensor tympani
- Which cartilage gives rise to skeletal structures of the 2nd pharyngeal arch?
- Reichert's cartilage
- Which cranial nerve supplies the 2nd pharyngeal arch?
- CN VII (facial)
- Which ear ossicle derives from the 2nd pharyngeal arch?
- Stapes
- What major muscle group derives from the 2nd pharyngeal arch?
- Muscles of facial expression
- Which cranial nerve supplies the 3rd pharyngeal arch?
- CN IX (glossopharyngeal)
- Which skeletal structure derives from the 3rd pharyngeal arch?
- Greater horn and lower body of the hyoid bone
- Which muscle derives from the 3rd pharyngeal arch?
- Stylopharyngeus
- Which branch of CN X supplies the 4th pharyngeal arch?
- Superior laryngeal nerve
- Which muscles derive from the 4th pharyngeal arch?
- Pharyngeal constrictors and cricothyroid