Exam 1- Branchial Arches/Pouches

Question 0

Second Branchial Arch

Answer 0

Nerve- Facial

Skeletal- stapes, styoid process, upper 1/2 of body and lesser horns of hyoid

Ligament- stylohyoid ligament

Muscles- 1) muscles of facial expression, 2) stylohyoid, 3) posterior belly of the digastric, 4) stapedius

Question 1

First Branchial Arch

Answer 1

Nerve- Trigeminal

Skeletal- malleus, incus

Ligaments- Anterior Ligament of the Malleus, Sphenomandibular Ligament

Muscles- 1) muscles of mastication, 2) mylohyoid, 3) tensor palati, 4) tensor tympani, 5) anterior belly of the digastric

Question 2

Third Branchial Arch

Answer 2

Nerve- Glossopharyngeal

Skeletal- Lower 1/2 body and greater horns of hyoid

Muscle- Stylopharengeous

Question 3

Fourth Branchial Arch

Answer 3

Skeletal- cartilage of the larynx

Muscles- 1) all muscles of Larynx, 2) all muscles of the pharynx (except stylopharengeus), 3) all muscles of the palate (except tensor palati)

Question 4

Sixth Branchial Arch

Answer 4

Muscles- trapezius and sternocleidomastoid

Question 5

First Branchial Pouch forms…

Answer 5

Auditory Tube and Tympanic Cavity

Question 6

Second Branchial Pouch forms…

Answer 6

Lining (crypts) of palatine tonsils

Question 7

Third Branchial Pouch forms…

Answer 7

Inferior parathyroid gland and thymus

Question 8

Fourth Branchial Pouch forms…

Answer 8

Superior parathyroid gland and C-cells of thyroid

Question 9

First Branchial Cleft forms…

Answer 9

External Auditory Meatus

Question 10

First Branchial Membrane forms…

Answer 10

Tympanic Membrane