Syllabus 9 Questions: Answered Flashcards Preview

Structures: Part Deux > Syllabus 9 Questions: Answered > Flashcards

Flashcards in Syllabus 9 Questions: Answered Deck (19):
1

difference between "skull" and "cranium"?

skull= 22 bones, encompasses cranium and mandible 

cranium= doesn't include mandible; bones attached by sutures, so calvaria and viscerocranium

2

what comprises cranium?

1) calvaria - upper domed pt, covers cranial cavity containign brain 

2) viscerocranium, facial skeleton- lower, anteiror pt

3

views of skull

1) norma lateralis

2) norma frontalis

3) norma verticalis

4) norma occipitalis 

5) norma basalis 

4

what is a branchial arch?

outpouchings of mesoderm on both sides of developing pharynx

develops during week 4

each archy develops its own artery, nerve controlling a distinct muscle group, and skeletal tissue

5

1st branchial arch's nerve?

trigeminal, CN V

6

2nd branchial arch's nerve?

facial, CN VII

7

3rd branchial arch's nerve?

glossopharyngeal, CN IX

8

4th branchial arch's nerve?

vagus, CN X 

superior laryngeal nerve

9

5th & 6th branchial arches' nerve?

cranial root fo spinal accessory n (CN XI) fibers carreid in recurrent laryngeal nerve (of Vagus, CN X)

10

major sensory nerve of the face, its divisions, their fiber types? 

trigeminal nerve (CN V) 

V1 = opthalmic division, GSA 

V2 = maxillary division, GSA

V3 = mandibular division, GSA & SVE

11

what nerve exits skull thru foramen ovale?

V3, mandibular division of trigeminal n (CN V) 

12

which hole is foramen ovale?

Q image thumb

where CN V, trigeminal n, exits skull

A image thumb
13

what nerve supplies muscles of facial expression?

CNVII, facial n

14

what nerve traverses parotid duct? why clinically important?

CN VII, facial n

traverses parotid duct, but doesn't innervate parotid gland 

parotid gland innervated by CN IX, glossopharyngeal n

however tumors in area of parotid gland may cause facial pain on involved side

15

distinguishing feature of facial artery? fxn?

tortuous 

accomodates neck movements

aka "anaesthetist's artery"

16

what is facial artery direct branch of?

external carotid a

aorta > common carotid a > external carotid a > facial a

17

where is mental foramen? what nerve emreges from it? fiber type of said nerve? 

2 holes on anterior surface of mandible

mental n emerges - branch of trigeminal n (CN V) 

trigeminal > mandibular, V3  > inferior alveolar > mental

GSA and SVE fibers

18

what is a suture? why not always visible in adults?

suture is seam-like immovable fibrous joint btwn 2 bones 

when skull/brain grow to adult size, sutures calcify, bones fuse, no longer visible

19