Prenatal & Face/Neck Development Quiz

Contributed by:

1.     What is embryology?  

2.     What are the 3 periods of prenatal development?  

3.     Earliest indication of part or organ during pre natal development is:  

4.     In what week does pre implantation take place?  

5.     An egg that is fertilized by sperm is:  

6.     Zygote undergoes mitosis, what is mitosis?  

7.     The zygote keeps dividing into a ball of cells that becomes a:  

8.     Blastocyst:  

9.     How does the uterus prepare to accept the blastocyst?  

10.                         Describe the process of implantation:  

11.                         List the layers of the blastocyst & what they eventually will become:  

12.                        When does the embryonic period take place?  

13.                         There are 5 processes in the embryo, list them in order and their function:

1.      

2.      

3.      

4.      

5.     Maturation: 

14.                        Interstitial growth:  

15.                        Appositional growth:  

16.                         At which week is embryo recognized as looking like a human being?  

17.                         In prenatal development, where does the bilaminar embryonic disc originate?  

18.                        From what disc does the embryo develop?  

19.                        The bilaminar disc has 2 layers, what are they and what type of epithelium do they have?

20.                        In what week is the bilaminar disc forming?  

21.                        The bilaminar disc suspends in the uterus’ endometrium between what 2 cavities?  

22.                         Fill in chart with the cavities & their function if any:

23.                        In the 3^rd week the                                forms and will cause disc to have                                         .

24.                        What is bilateral symmetry?  

25.                        What is mesenchyme?  

26.                        Where is mesenchyme located?  

27.                        Bilaminar become trilaminar because of:  

28.                        The disc thickens & becomes a trilaminar embryonic disc. List layers & what they create:

29.                        The features of the trilaminar disc:

Cephalic end~  

Oropharnygeal membrane~  

Caudal end~  

Cloacal membrane~  

Primitive CNS~

Neuroectoderm~  

Neural groove~  

Neural tube~  

30.                        What cells are considered to be the 4^th embryonic layer?  

31.                        What are neural crest cells?  

32.                         Somites:

What are they: 

Where are they?  

Becomes:  

33.                        What does the disc undergo in the 4^th week?   

34.                         Where does embryonic folding occur? 

35.                        What happens during this folding?  

36.                        What is the tube that forms during embryonic folding?  

37.                         The future digestive tract separates into 3 regions:

Foregut: 

Midgut: 

Hindgut:  

38.                        Teratogens are anything that can cross the placenta & harm the fetus. List some examples and the cause:

39.                        In what week does the fetal period begin?  

40.                        What happens when the embryo enlarges?  

41.                        When does breathing start?  

42.                        By the end of the 4^th month what can be detected?  

43.                         Cartilage of mandibular arch:  

44.                         When does Meckle’s cartilage disappear?  

45.                         What does the mandibular arch eventually become?  

46.                         Placodes:  

47.                         What are the 3 placodes located on either side of the frontonasal process?  

48.                         What does the median nasal process form?  

49.                         What does the intermaxillary segment form?  

50.                         What does the lateral nasal process form?  

51.                         The upper lip is formed in what week?  

52.                         What 2 processes form the upper lip?  

53.                         Five Facial Processes:

54.                        What is the cause of cleft lip?  

55.                        The primitive pharynx and brachial apparatus develop:  

56.                         What is the brachial apparatus made up of?  

57.                        What are brachial arches?  

58.                         What do the brachial arches support? 

59.                         Fill in chart about Brachial Arches

60.                        What are pharyngeal pouches?  

61.                        Name, in order, the pouches that form & what they form?

1^st:  

2^nd: 

3^rd: 

 Disclaimer: These notes were copied and pasted from files sent to me by Andrea.  They have not been reviewed for errors. You are responsible for checking out the information to verify the accuracy. This site, Amy Nieves and Andrea are not responsible for typographical errors.