Special Organs in the Head

Question 1

Divides the mucous membrane of the tongue into anterior (oral) and posterior (pharyngeal) parts

Answer 1

Sulcus terminalis (V shaped sulcus)

Question 2

Apex projects backward and is marked by a small pit

Site of origin of thyroglossal duct

Answer 2

Foramen cecum

Question 3

Arranged in the form of “V” in front of the sulcus terminalis

10-12 in number

Answer 3

VALLATE papillae

Question 4

Mushroom shaped projections scattered on the side and apex of the tongue

Answer 4

FUNGIFORM papillae

Question 5

Slender conical projections arranged in rows parallel to the sulcus terminalis

Answer 5

FILIFORM papillae

Question 6

RUDIMENTARY in humans

Answer 6

FOLIATE papillae

Question 7

Intrinsic muscles of the tongue

alter the SHAPE

Answer 7

Superior and Inferior Longitudinal
Transverse
Vertical

Question 8

Extrinsic muscles of the tongue

alter the POSITION

Answer 8

Palatoglossus - ELEVATION (CN X)

Styloglossus - RETRACTION

Hyoglossus - DEPRESSION

Genioglossus - PROTRUSION, comprises bulk of the tongue

Question 9

All tongue muscles are innervated by HYPOGLOSSAL NERVE (CN XII) EXCEPT

Answer 9

Palatoglossus -(CN X)

Question 10

Nerve supply of the GENERAL sensation of the tongue

Answer 10

ant 2/3 - CN V3 (lingual nerve)

post 1/3 - CN IX (glossopharyngeal nerve)

Question 11

SPECIAL sensation of the tongue

Answer 11

ant 2/3 - CN VII (facial nerve)

post 1/3 - CN IX (glossopharyngeal nerve)

Question 12

Receive both general and taste innervation from CN IX (glossopharyngeal)

Answer 12

Posterior 1/3 of the tongue and VALLATE papillae

Question 13

Receive both general and taste innervation from the INTERNAL LARYNGEAL of VAGUS NERVE

Answer 13

Epiglottic region

Question 14

Blood supply of the tongue

Answer 14

ECA – Lingual artery

Question 15

Roof of the Orbit

Answer 15

Lesser wing of the sphenoid bone

Orbital plate of the FRONTAL bone

Question 16

Medial wall of the Orbit

Answer 16

Sphenoid body

Orbital plate of the ETHMOID bone

Question 17

Lateral wall of the Orbit

Answer 17

Zygomatic process of FRONTAL bone

Greater wing of the sphenoid bone

Orbital surface of the ZYGOMATIC bone

Question 18

Floor of the Orbit

Answer 18

Orbital plate of the MAXILLA

Palatine

Zygomatic bone

Question 19

Medial Rectus

ADDUCTION

CN III

Answer 19

patient asked to look to the nose (medially)

injury –> abducted and depressed

Question 20

Superior Rectus

ELEVATION, intorsion and adduction

CN III

Answer 20

patient asked first to look to the side then look up

injury –> abducted and depressed

Question 21

Inferior Rectus

DEPRESSION, intorsion and adduction

CN III

Answer 21

patient asked first to look to the side then look down

injury –> abducted and depressed

Question 22

Inferior Oblique

EXTORSION, ABDUCTION, elevation

CN III

Answer 22

patient asked first to look to the nose then look up

injury –> abducted and depressed

Question 23

Superior Oblique

INTORSION, ABDUCTION, depression

CN IV

Answer 23

patient asked first to look to the nose then look down

injury –> extorted

Question 24

Lateral Rectus

ABDUCTION

CN VI

Answer 24

patient asked to look to the side (laterally)

Question 25

Levator Palpebrae

Answer 25

Elevates upper eyelid (keeps eye open)