Anatomy

Question 1

What are the 7 bones of the orbit?

Answer 1

Frontal
Lacrimal
Maxilla
Ethmoid
Sphenoid
Palatine
Zygomatic

Question 2

What bones comprise the inferior border of the orbit?

Answer 2

Maxilla

Zygomatic

Question 3

What bones comprise the superior border of the orbit?

Answer 3

Frontal

Question 4

What bones comprise the lateral border of the orbit?

Answer 4

Frontal

Zygomatic

Question 5

What bones comprise the medial border of the orbit?

Answer 5

Lacrimal
Ethmoid
Palatine
Frontal

Question 6

What bones comprise the posterior border of the orbit?

Answer 6

Sphenoid
Zygomatic
Frontal?

Question 7

What structures does the orbit communicate with?

Answer 7

Middle cranial fossa (via optic canal and SOF)
Infratemporal and pterygopalatine fossa (via IOF)
Inferior meatus of the nose (via the nasolacrimal canal)
Nasal cavity (via the anterior ethmoidal foramen)
Face (via SOF & IOF)

Question 8

Superior stratum of retrodiscal pad

Answer 8

(Retrodiscal pad/bilaminar areas of TMJ)

Contains many elastic fibers that pull the articular disk backwards to its resting position

Question 9

Inferior stratum of retrodiscal pad

Answer 9

(Retrodiscal pad/bilaminar areas of TMJ)
Composed of highly vascularized tissue (pseudo-cavernous plexus) that is filled with blood whenever articular disk moves forward in function

Question 10

What structures of the tongue does pharyngeal arch I form?

Answer 10

Tuberculum impar

Lateral lingual swellings which develop sides of median tongue bud and fuse to form anterior 2/3s of the tongue

Question 11

What structures of the tongue does pharyngeal arch II form?

Answer 11

Part of the copula –> forms posterior 1/3 of the tongue

Question 12

What structures of the tongue does pharyngeal arch III form?

Answer 12

Part of the copula and hypobrancial eminence –> forms posterior 1/3 of the tongue

Question 13

T/F: The anterior 1/3 of the tongue is formed from ectoderm, while the posterior 2/3 of the tongue is formed from endoderm.

Answer 13

True

Question 14

Which lingual papillae primarily function in special taste and sensation?

Answer 14

Circumvallate and foliate

Question 15

What type of lingual papillae are on the anterior 1/3 of the tongue?

Answer 15

(Masticatory)
Filiform
Anterior fungiform

Question 16

What type of lingual papillae are on the posterior 2/3 of the tongue?

Answer 16

(Taste)
Circumvallate
Foliate
Posterior fungiform`

Question 17

Filiform papillae

Answer 17

Hair-like, somewhat keratinized

Question 18

Fungiform papillae

Answer 18

Only papillae with taste buds on dorsal surface of papilla (on the top, rather than the sides)

Question 19

Circumvallate papillae

Answer 19

Taste buds only on one(?) lateral surface

von Ebner glands in crevice to flush out buds with serous secretions

Question 20

Foliate papillae

Answer 20

Taste buds on both lateral surfaces

von Ebner glands in crevice to flush out buds with serous secretions

Question 21

What indicates a submucosal cleft palate?

Answer 21

A palpable notch at the posterior end of the palate or bifid uvula (partial separation of muscle within intact mucosa)

Question 22

Cleft lip

Answer 22

Improper fusion of medial nasal and maxillary processes