Pharyngeal Apparatus

Question 1

First Pharyngeal Arch cartilaginous derivatives

Answer 1

Malleus and Incus by Meckel’s cartilage

Question 2

First Pharyngeal Arch muscular derivatives

Answer 2

Muscles of mastication (Temporalis, pterygoids, and masseter)
Anterior belly of digastric
Mylohyoid
Tensor tympani
Tensor Palatini

Question 3

First Pharyngeal Arch nerve supply

Answer 3

All the muscles by the mandibular branch of the trigeminal nerve
The dermis of the face by the ophthalmic, maxillary, and mandibular branches of the trigeminal nerve

Question 4

Second Pharyngeal Arch cartilaginous derivatives (from Reichert’s Cartilage)

Answer 4

Stapes, styloid process of the temporal bone and stylohyoid ligament dorsally
Lesser horn and the upper part of the hyoid bone ventrally

Question 5

Second Pharyngeal Arch mesenchymal derivatives

Answer 5

Most of the external ear

Question 6

First Pharyngeal Arch mesenchymal derivatives

Answer 6

Maxilla, zygomatic bone, a part of the temporal bone by maxillary process
Mandible by mandibular process

Question 7

Second Pharyngeal Arch muscles

Answer 7

Stapedius
Posterior belly of digastric
Auricular
Muscles of the facial expressions
Stylohyoid

Question 8

Second Pharyngeal Arch nerve supply

Answer 8

Facial Nerve

Question 9

Third Pharyngeal Arch cartilaginous derivatives

Answer 9

Greater horn and the lower part of the hyoid bone

Question 10

Third Pharyngeal Arch muscle

Answer 10

Stylopharyngeus

Question 11

Third Pharyngeal Arch nerve supply

Answer 11

Glossopharyngeal nerve

Question 12

Fourth and Sixth Pharyngeal Arches cartilaginous derivatives

Answer 12

Cricoid, arytenoid, thyroid, corniculate and cuneiform cartilages of the larynx

Question 13

Fourth and Sixth Pharyngeal Arches muscles

Answer 13

Fourth - Constrictors of the pharynx, Cricothyroid, and Levator veli palatini
Sixth - Intrinsic muscles of the larynx

Question 14

Fourth Pharyngeal Arch nerve supply

Answer 14

Superior Laryngeal branch of the vagus nerve

Question 15

Sixth Pharyngeal Arch nerve supply

Answer 15

Recurrent laryngeal branch of the vagus nerve