Which of the following structures is derived from the first pharyngeal arch cartilage (Meckel cartilage)?
- A Stapes and styloid process
- B Greater horn of the hyoid
- C Malleus and incus ✓
- D Thyroid cartilage
Correct answer: C. Malleus and incus
Explanation
The first arch cartilage (Meckel cartilage) gives rise to the malleus, incus, sphenomandibular ligament and the mandible (by intramembranous ossification around it). Stapes, styloid process and lesser horn of hyoid come from the second arch (Reichert cartilage), greater horn of hyoid from the third arch, and thyroid cartilage from the fourth and sixth arches. This arch also supplies muscles of mastication via the mandibular nerve.
Reference: Langman's Medical Embryology, 14th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.