Question

Structure derived from first pharyngeal arch:

• A. Levator palatini
• B. Buccinator
• C. Stylohyoid
• D. Anterior belly of digastric

Answer 1

The Correct Option is D

The first pharyngeal arch, also known as the mandibular arch, contributes to the development of several structures within the head and neck region. Key derivatives of the first pharyngeal arch include muscles of mastication and some associated with other facial expressions. Specifically, the following muscles are derived from the first pharyngeal arch:

• Muscles of mastication (e.g., masseter, temporalis)
• Mylohyoid
• Tensor tympani
• Tensor veli palatini
• Anterior belly of the digastric
• Part of the anterior two-thirds of the tongue

The anterior belly of the digastric muscle, as listed in the options, is indeed derived from the first pharyngeal arch. Other structures or muscles mentioned, such as the levator palatini, buccinator, and stylohyoid, are not derived from the first pharyngeal arch. Therefore, the correct answer is:

Anterior belly of digastric