Head

Question 1

Describe the straight sinus

Answer 1

The great cerebral vein of galen drains directly into the straight sinus

Question 2

Dangerous area of the face is drained by

Answer 2

Faacial vein

Question 3

Tributaries of the cavernous sinus

Answer 3

Superior ophthalmic vein

Central vein of the retina

Question 4

What pass through the cavernous sinus

Answer 4

CN III,IV,V1,V2,VI, ICA

Question 5

What elevates eyelid

Answer 5

Levator palpebrae superioris (striated muscle - occulomotor nerve; smooth muscle - sympathetic)
Occipitofrontalis - elevates eyebrows
(Facial nerve)

Question 6

Pterion

Answer 6

Frontal
Squamous Temporal
Parietal
Greater wing of sphenoid

Question 7

Asterion

Answer 7

Parietomastoid
Occipitomastoid
Lambdoid

Question 8

Bregma

Answer 8

Coronal + sagittal suture

Anterior fontanelle that closed at 18 months old

Question 9

Lambda

Answer 9

Lambdoid + sagittal suture

Posterior fontanelle

Question 10

Maxillary fracture le fort 1

Answer 10

Horizontal fracture superior to the maxillary alveolar process

Question 11

Le fort II

Answer 11

Posterolateral parts of the maxillary sinuses;

CETNRAL PART of the face separated from cranium

Question 12

Le fort III

Answer 12

Horizontal fracture that passes through the superior orbital fissures, ethmoid, and nasal extending to greater wing of sphenoid;
MAXXILAE and ZYGOMATIC separated from cranium

Question 13

What is responsible for a gaping wound on a scalp injury?

Answer 13

Galea aponeurotica

Question 14

Jaw muscles

Answer 14

Closes jaw
-temporalis
-masseter
-medial pteryogoid
Opens jaw
-lateral pterygoid

Question 15

Embryogic origin of the facial muscles

Answer 15

From mesoderm in the 2nd pharyngeal arches

Question 16

Smiling muscle

Answer 16

Zygomaticus

Question 17

Grinning muscle

Answer 17

Risorius

Question 18

Blowing muscle

Answer 18

Buccinator
“Sucking muscle”
“Trumpeter’s muscle”

Question 19

Kissing muscle

Answer 19

Orbicularis oris

Question 20

Branches of the facial nerve

Answer 20

Greater petrosal nerve
Nerve to stapedius
Chorda tympani
Posterior auricular nerve
Terminal branches
*geniculate ganglion

Question 21

describe greaeter petrosal nerve

Answer 21

Arises from the geniculate ganglion;

Contains secretomotor fibers to the LACRIMAL GLAND

Question 22

Describe chorda tympani

Answer 22

Contains secretomotor fibers to the submandibular and sublingual glands;
Taste fibers to the ant 2/3 of tongue and floor of the mouth

Question 23

Describe posterior auricular nerve

Answer 23

Supplies:
Back of auricle
External auditory meatus
Tympanic membrane
Posterior belly of digastric
Stylohyoid

Question 24

Facial nerve: lies within the parotid saslivary gland after leaving the __________________ foramen and is located between the superficial and deep parts of the gland

Answer 24

Stylomastoid foramen

Question 25

Terminal branches of facial nerve from parotid plexus

Answer 25

``` Temporal Zygomatic Buccal Mandiular Cervical ```

Question 26

Action of orbicularis oculi

Answer 26

Closes eyelids and dilates lacrimal sac | Orbital part throws skin around orbit into folds to protect eyeball

Question 27

Describe a supranuclear lesion of the facial neerve

Answer 27

Supranuclear means before the facial nuclei in the brain stem. Fibers going to the lower 1/2 muscles of the face only originates from the contralateral primary motor cortex. (So walang sasalo sa lower 1/2, paralyzed yan) PERO, muscles of the upper 1/2 of the face have bilateral innervation (cingulate motor area). (Kaya preserved ang upper 1/2 muscles) Pag facial nerve na mismo, buong halvf na yan. (Parang optic nerve lesion, buong mata yan, walang half-half)

Question 28

Where is the muscles of the eyeball derived?

Answer 28

Somitomeres 1 and 2: superior, medial, and ventral recti Somitomere 3: superior oblique Somitomere 5: lateral rectus

Question 29

Wrinkles nose

Answer 29

Procerus