Talk:BGDB Practical - Face and Ear Development

From Embryology

2019

BGDB Practical - Face and Ear Development Interactive

Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Trilaminar Embryo Interactive Component

Attempt the Quiz - Trilaminar Embryo 
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Here are a few simple Quiz questions that relate to Trilaminar Embryo from the lecture and practical.

  

1 Which of the following best describes the term "ectomesenchyme":

ectoderm derived from mesoderm
epithelium derived from connective tissue
sensory placodal induction by mesoderm
connective tissue derived from neural crest
none of the above is correct

2 Which of the following best describes the buccopharyngeal membrane structure:

a ventral surface indentation in the early embryo head
endoderm layer of the foregut
ectoderm layer of the epidermis
ectoderm and endoderm
none of the above is correct


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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Early Embryo Interactive Component

Attempt the Quiz - Early Embryo 
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Here are a few simple Quiz questions that relate to Early Embryo from the lecture and practical.

  

1 Which of the following best describes the term "ectomesenchyme":

ectoderm derived from mesoderm
epithelium derived from connective tissue
sensory placodal induction by mesoderm
connective tissue derived from neural crest
none of the above is correct

2 Abnormal or perturbed migration of neural crest cells may result in malformation of structures derived from the:

first pharyngeal arch
second pharyngeal arch
third pharyngeal arch
fourth pharyngeal arch
all of the above


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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Late Embryo Interactive Component

Attempt the Quiz - Late Embryo 
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Here are a few simple Quiz questions that relate to Late Embryo from the lecture and practical.

  

1 All of the following develop from the first pharyngeal pouch except the:

tympanic membrane
tympanic cavity
tympanic antrum
pharyngeotympanic tube
epithelial covering of the middle ear ossicles

2 Which of the following muscles is derived from the first pharyngeal arch?

stapedius
stylohyoid
stylopharyngeus
levator vili palatini
mylohyoid

3 Which of the following develops in the third pharyngeal arch?

the malleus
facial nerves
the anterior belly of the digastric
the posterior belly of the digastric
the common carotid artery


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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Fetal Interactive Component

Attempt the Quiz - Fetal 
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Here are a few simple Quiz questions that relate to Fetal development from the lecture and practical.

  

1 The bones of the adult skull form only by the process

  intramembranous ossification
  endochondral ossification
  neither intramembranous or endochondral ossification
  intramembranous and not endochondral ossification
  both intramembranous and endochondral ossification
  chondroblast cell replacement of osteoblast cells

2 The secondary palate can be divided into two anatomical parts:

  the maxillary components of the first pharyngeal arch
  the frontonasal prominence
  the anterior hard palate
  posterior soft palate


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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Postnatal Interactive Component

Attempt the Quiz - Postnatal 
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Here are a few simple Quiz questions that relate to Postnatal development from the lecture and practical.

  

1 The newborn skull has 6 fontanels (fontanelles) the most obvious are the anterior and posterior, both close postnatally. Which of these fontanels closes later?

  anterior fontanel
  posterior fontanel

2 Unossified areas at the intersection of the sutures in the fetal skull are known as:

  the membranous neurocranium
  the membranous viscerocranium
  the fontanelles
  the frontonasal prominence
  Meckel's cartilage

3 Failure of the brain to develop may result in:

  plagiocephaly
  acrocephaly
  Crouzon's syndrome
  microcephaly
  acrania


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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Abnormalities Interactive Component

Attempt the Quiz - Abnormalities 
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Here are a few simple Quiz questions that relate to Abnormalities in development from the lecture and practical.

1 Cleft palate (palatoschisis) in humans occurs differently between the sexes and occurs more frequently in:

  females
  males

2 The abnormality of a pharyngeal fistula refers to a:

  a cartilaginous developmental remnants
  a bony developmental remnants
  a cervical sinus defect
  a pharyngeal membrane defect
  a pharyngeal groove defect

3 According to the "Ten most frequently reported Birth Anomalies" which form of clefting occurs more frequently?

  Cleft Palate
  Cleft Lip and Palate

4 There are a number of skull abnormalities due to premature suture fusion. Which of the following clinical terms refers to premature cranial suture fusion:

  oxycephaly
  plagiocephaly
  caphocephaly
  trigoncephaly
  craniosynostosis

5 Which of the following would cause congenital deafness?

  maternal rubella infection
  maternal goiter
  erythroblastosis
  maternal diabetes
  any of the above

6 Rubella infection during pregnancy may cause:

  congenital deafness
  congenital glaucoma
  cochlear duct damage
 corneal clouding
  any of the above

7 Malformations of auricles may be associated with:

  Down's syndrome
  craniosynostosis
  cardiac abnormalities
  absence of one or more middle ear ossicles
  any of the above


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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities

Quiz


The newborn skull has 6 fontanels (fontanelles) the most obvious are the anterior and posterior fontanels that close at different times postnatally. posterior fontanel closes at about 3 months anterior fontanel closes at about 18 months

Activity 1

germ layers

pharyngeal arches

stomodeum, oral membrane, pharynx

Activity 2

mouth - tongue, teeth, glands

skull - ossification

Activity 3

Hearing

Activity 4

Abnormalities - cleft lip, cleft palate, hearing loss, Fetal Alcohol Syndrome, nutrition.

Genetic, environmental, diagnostic



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Practical 6: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities


2018

2018

Introduction page only, check history log for each of the other pages.

2016

2016

2014

2014

BGD Internal Links 2009 Practical Head

Audio 2009

Recording Notes:

  1. The recording was paused during tutorial periods of the practical.
  2. The 5 pages of this laboratory are referred to in sequence though the recording.
  3. Descriptions and labelling was carried out on images located on each of the pages.
  4. As this is an unedited recording, some errors and inaccuracies may exist in the actual audio content.
  5. Always refer to your original practical handout notes and the online materials within the class.