Download MBBS Anatomy PPT 4 Head And Neck Notes

Download MBBS (Bachelor of Medicine, Bachelor of Surgery) Human Anatomy ppt lectures Topic 4 Head And Neck Notes. - anatomy ppt free download human anatomy ppt lectures, medicine notes ppt, anatomy handwritten notes pdf, mbbs 1st year anatomy notes pdf download, best anatomy notes pdf, human anatomy notes pdf, anatomy easy notes pdf, anatomy notes online, anatomy short notes, Anatomy ppt, Powerpoint Presentations and lecture notes.
















which of the following are associated with the 2nd pharyngeal arch?

a) the mal eus bone

b) facial nerve

c) glossopharyngeal nerve

d) the lower portion of the hyoid bone


. Branchial cysts or lateral cysts:

a) are found along the anterior border of the sternocleidomastoid

muscle

b) are formed from a rupture of the membrane between pharyngeal

pouches and branchial clefts

c) are remnants of the thyroglossal duct

d) are found in front of the ear





Which of the following structure is NOT part of the first branchial arch?

a) mal eus

b) mandibular process

c) sphenomandibular ligament

d) stylohyoid ligament





The hypobranchial eminence contributes to formation of:

a) anterior portion of the tongue

b) Posterior portion of the tongue

c) musculature of the tongue

d) Epiglottis

Myoblasts form the occipital myotomes believed to give rise to the

muscle of the:

a) eye

b) face

c) ear

d) tongue





The most common site of a thyroglossal cyst is the

a)

Dorsal aspect of neck

b)

Anterior border of sternocleidomastoid muscle

c)

Superior mediastinum

d)

Midline close to the hyoid bone

DEVELOPMENT OF FACE



































The intermaxil ary segment forms via the fusion of the

a)

Maxil ary prominences

b)

Mandibular prominences

c)

Medial nasal prominences

d)

Lateral nasal prominence

Fronto-nasal Process

? Nasal placode: rounded thickening in the

lower lateral parts of the fronto-nasal process.

? Nasal pits & swel ings: invagination of

placode will form nasal pits which are

surrounded by medial & lateral nasal

prominences (folds).

? Intermaxil ary segment: from fused medial

nasal prominences . It forms intermaxillary

segments that form middle part of nose, filtrum,

part of upper jaw that carries upper 4 incisors

and primary palate.

Maxil ary Process

? It is separated from side of fronto-nasal

process by naso-lacrimal groove, inside

which a cord of ectodermal cells is formed

then becomes canalized to form naso-

lacrimal duct. Its upper end forms lacrimal

sac.

? Maxillary process fuses with fronto-nasal

process covering naso-lacrimal duct.

? It forms lower boundary of nasal pit.
? It is separated from other maxillary

process by intermaxillary segment.
















-It also fuses partially with mandibular

process to form the cheek.

-Palatine process is formed as inward

projection of maxil ary process to form

secondary palate which divides

stomodeum into upper nasal and lower

oral cavity.

So maxil ary process forms upper part

of cheek, upper lip except filtrum, upper

jaw except part that carries upper

incisors and most of hard palate.

Mandibular Process

? It forms lower part of cheek, whole lower lip and lower

jaw and floor of mouth.

? Development of palate:
? 1- Primary palate: from intermaxil ary segment of

fronto-nasal process.

? 2- Secondary palate: from palatine processes of

maxil ary processes that form most of hard palate and

soft palate.

? -Hard palate receives downward growth of nasal

septum.


. The nasolacrimal groove separates the:

a) mandibular and maxil ary swel ing

b) lateral nasal swel ing and maxil ary swel ing

c) medial nasal swel ing and maxil ary swel ing

d) first and second branchial swel ing





MACROSTOMIA

As a resident in paediatrics, you are cal ed to see a newborn who has a unilateral cleft lip and a

unilateral cleft of the primary plate. This condition is most likely the result of:

a) failure of fusion of the mandibular prominence

b) failure of fusion of the medial nasal processes

c) failure of fusion of the maxil ary prominence with the medial nasal prominence

d) failure of fusion of the lateral palatine processes with the nasal septum































Congenital Anomalies of Face &

Palate

? 1- Inclusion dermoid: cystic swelling at line of fusions between

processes of the face.

? 2- Oblique facial cleft: failure of fusion between maxillary and

fronto-nasal processes.

? 2- Macrostomia or Microstomia : defective or marked fusion

between maxillary and mandibular processes.

? 3- Cleft (hare) lip: cleft lip due to failure of fusion between

maxillary process and intermaxillary segment.

? 4- Cleft palate: failure of fusion between different parts that

form palate. It could be:

l A- Unilateral complete cleft palate.

l B- Bilateral complete cleft palate.

l C- Partial cleft palate.

l D- Cleft uvula.





Which pharyngeal arch is associated with Treacher Collins syndrome?

a)

Pharyngeal arch 1

b)

Pharyngeal arch 2

c)

Pharyngeal arch 3

d)

Pharyngeal arch 4
The stapedius muscle that moves the stapes ossicle is innervated by

a)

CN V3

b)

CN XII

c)

CN II

d)

CN VI

The Palatine tonsil and Tonsilar fossa are derivatives from which

pharyngeal pouch?

a. Pharyngeal pouch 1

b. Pharyngeal pouch 2

c .Pharyngeal pouch 3

d. Pharyngeal pouch 4

This post was last modified on 05 April 2022