Branchial Arches

Question 1

First Arch (CN-V)-SKELETAL

Answer 1

1) Malleus, 2) Incus

Question 2

First Arch (CN-V)-LIGAMENTS

Answer 2

1) Ant. ligament of malleus,2) Sphenomandibular ligament

Question 3

First Arch (CN-V)-MUSCLES

Answer 3

1) Muscles of Mastication, 2) Tensor tympani, 3) Tensor palati, 4) Mylohyoid, 5) Ant. belly of Digastric

Question 4

Second Arch (CN-VII)-SKELETAL

Answer 4

1) Stapes 2) Styloid process 3) Hyoid bone- lesser horn, upper half of body

Question 5

Second Arch (CN-VII)-LIGAMENTS

Answer 5

Stylohyoid ligament

Question 6

Second Arch (CN-VII)-MUSCLES

Answer 6

1) Muscles of facial expressions, 2) Stapedius, 3) Stylohyoid, 4) Post. Belly of Digastric

Question 7

Third Arch (CN-IX)-SKELETAL

Answer 7

Hyoid bone - greater horn, lower half of body

Question 8

Third Arch (CN-IX)-MUSCLES

Answer 8

Stylopharyngeus

Question 9

Fourth Arch (CN-X)-SKELETAL

Answer 9

Cartilages of Larynx

Question 10

Fourth Arch (CN-X)-MUSCLES

Answer 10

1) all muscles of Larynx, 2) All muscles of pharynx (except stylopharyngeus), 3) all muscles of soft palate (except Tensor palati)

Question 11

Sixth Arch (CN-XI)-MUSCLES

Answer 11

1) Sternocleidomastoid, 2) Trapezoid

Question 12

First Pouch-FORMS

Answer 12

1) Auditory tube, 2) Tympanic Cavity

Question 13

First Pouch-CLINICAL

Answer 13

First Branchial ‘Cleft’ cyst - tract linked to external auditory meatus

Question 14

Second Pouch-FORMS

Answer 14

Lining (crypts) of palatine tonsils

Question 15

Second Pouch-CLINICAL

Answer 15

Second Branchial ‘Cleft’ cyst - tract linked to tonsillar fossa (palatine tonsils)

Question 16

Third Pouch-FORMS

Answer 16

1) Inferior parathyroid gland, 2) Thymus

Question 17

Third Pouch-CLINICAL

Answer 17

Third Branchial “Cleft” cyst- tract at thyrohyoid membrane or piriform recess

Question 18

Fourth Pouch-FORMS

Answer 18

1) Superior parathyroid gland, 2) C-cells of Thyroid

Question 19

Fourth Pouch-CLINICAL

Answer 19

Does not form