Good morning all ! Let's start today's topic ! Q. 2-month-old | Dr. Sandeep Anatomy(Dams) Channel

Good morning all ! Let's start today's topic !

Q. 2-month-old male infant had a small pit at the anterior border of the sternocleidomastoid muscle,
with mucus dripping intermittently from the opening. The pit extended to the tonsillar fossa as a branchial fistula. Which of the following embryologic structure(s) is (are) involved in this anomaly?
A. Second pharyngeal arch
B. Second pharyngeal pouch and groove
C. Third pharyngeal pouch
D. Second pharyngeal pouch and cervical sinus