LEC 1

Question 1

What do you mean by prenatal?

Answer 1

“before birth”

Question 2

What are the 3 Periods:

Answer 2

1. Period of Ovum (fertilization - 14th day)
2. Period of Embryo (14th-56th day)
3. Period of Fetus (56th day 270th/birth)

Question 3

What period: fertilization - 14th day

Answer 3

Period of Ovum

Question 4

What period: (14th-56th day)

Answer 4

Period of Embryo

Question 5

What period: 56th day-270th/birth

Answer 5

Period of Fetus

Question 6

An attachment to the uterine wall

Answer 6

Cleavage of the ovum

Question 7

By the end of this period - 1.5 mm in length is observed.

Answer 7

Period of the Ovum

Question 8

By the end of Period of the Ovum, how much length is observed?

Answer 8

1.5mm

Question 9

When the sperm meets the egg, and they develop
together, a cleavage of ovum forms and attaches
itself to the uterine wall.

Answer 9

Period of the Ovum

Question 10

21 days after conception

Answer 10

Period of the Embryo

Question 11

3 mm in length and head begins to take shape.

Answer 11

Period of the Embryo

Question 12

Head is made up of prosencephalon.

Answer 12

Period of the Embryo

Question 13

On the Period of the Embryo, the head is made up of ____?

Answer 13

Prosencephalon

Question 14

At that time, before connection exists between
oral cavity and foregut, the head is primarily made
up of prosencephalon.

Answer 14

Period of the Embryo

Question 15

It is the most rostral part of the CNS, this is during Period of the Embryo.

Answer 15

Prosencephalon

Question 16

Inferior portion of prosencephalon frontal prominence which overhangs the developing oral groove.

Answer 16

Period of the Embryo

Question 17

Many facial components: ears, parts of nose, jaw, teeth, salivary glands arise from the pharyngeal portions of the foregut among others.

Answer 17

Period of the Embryo

Question 18

Face develops from tissues surrounding the oral pit.

Answer 18

Facial Development at 4-7th week

Question 19

Covering the brain, from which develops
the forehead

Answer 19

Frontal Process

Question 20

Development of the lateral to the oral pit (LR) - cheeks

Answer 20

Maxillary processes

Question 21

Development below the oral pit to lower jaw

Answer 21

Mandibular arch

Question 22

Also the 2nd pharyngeal arch

Answer 22

Hyoid arch

Question 23

Lying inferior to mandibular arch, its muscle
expands into and contribute to the face.

Answer 23

Hyoid arch

Question 24

It also forms the external & middle ear.

Answer 24

Hyoid arch

Question 25

Evident below the pit and on the sides of the neck

Answer 25

Pharyngeal Arches (4th week)

Question 26

Processes of the brain bulge forward & laterally to dominate the facial area.

Answer 26

Frontal Process (4th week)

Question 27

Below the frontal processes are 2 small wedge-shaped tissues termed as:

Answer 27

Maxillary Process

Question 28

It lies lateral to the oral pit.

Answer 28

Maxillary Process

Question 29

It is beneath maxillary processes

Answer 29

Mandibular Arch

Question 30

Divided or constricted in the middle

Answer 30

Mandibular Arch

Question 31

Heart begins to grow fast and is beginning to pump blood throughout the body.

Answer 31

Period of Embryo

Question 32

It begins to grow fast and is beginning to pump blood throughout the body.

Answer 32

Heart

Question 33

Fastest growing organ

Answer 33

Heart

Question 34

4th week: pumps blood

Answer 34

Heart (Period of the Embryo)

Question 35

Environmental factors play an important role in facial and palatal malformations. The period before the fifth week is the critical time during which these factors can affect facial development. A. 1st Statement is true, and 2nd Statement is false. B. 2nd Statement is false, and 1st Statement is true. C. Both statements are True D. Both Statements are False E. Neither

Answer 35

C. Both statements are True

Question 36

During the fifth week, the bilateral nasal placodes, or thickened areas of epithelium appear in the upper border of the lip. As the tissues around those placodes grow - resulting into 2 slits opening into the oral pit. A. 1st Statement is true, and 2nd Statement is false. B. 2nd Statement is false, and 1st Statement is true. C. Both statements are True D. Both Statements are False E. Neither

Answer 36

C. Both statements are True

Question 37

What period when frontal area becomes known as "frontal-nasal processes"

Answer 37

Period of Embryo (5th week)

Question 38

During the Period of Embryo at 5th week, What area becomes known as frontonasal processes.

Answer 38

Frontal area

Question 39

During the Period of Embryo at 5th week, deepened as the area around them continue to grow anteriorly.

Answer 39

Nostrils

Question 40

The distance between nostrils

Answer 40

Internasal Area

Question 41

It is the width of the face

Answer 41

Internasal Area

Question 42

Frontal prominence diminishes, and the face broadens.

Answer 42

Period of Embryo (5th week)

Question 43

This become prominent as well on the sides of head.

Answer 43

Eyes

Question 44

Loses its midline constriction.

Answer 44

Mandibular Arch

Question 45

Lateral parts of the face expand, broadening face - caused by the lateral growth of the brain.

Answer 45

Period of the Embryo (6th Week)

Question 46

Lateral parts of the face expand, broadening face - caused by the ____.

Answer 46

Lateral growth of the brain

Question 47

front of the face

Answer 47

Eyes and maxillary processes

Question 48

To the point that which the maxillary & your mandibular tissues emerge.

Answer 48

Mouth slit widens (6th Week)

Question 49

The nasal processes are limited to the middle of the upper lip = face looks more human

Answer 49

Period of the Embryo (6th Week)

Question 50

Are limited to the middle of the upper lip = face looks more human

Answer 50

The nasal processes

Question 51

Nasal processes and two maxillary segments

Answer 51

Upper Lip

Question 52

lateral to pit

Answer 52

Lateral nasal process

Question 53

Philtrum

Answer 53

Upperlip/Medial nasal process

Question 54

Medial to pits

Answer 54

Medial nasal process

Question 55

two maxillary processes and the medial third is the medial nasal

Answer 55

Border of Lip

Question 56

failure of fusion of medial nasal and max process.

Answer 56

Cleft Lip

Question 57

This period is important during pregnancy.

Answer 57

Cleft lip (6th week)

Question 58

zone of fusion

Answer 58

Nasal Fin

Question 59

It continue behind the nasal fin to open into the roof of the mouth at 6 weeks.

Answer 59

The Nasal Pits

Question 60

It grows around the oral pit

Answer 60

Orbicularis Oris Muscle

Question 61

Oblique groove from the nostrils to the eyes

Answer 61

Oronasal optic groove

Question 62

This is the tissue beneath the oronasal optic groove

Answer 62

Nasolacrimal duct develops

Question 63

auditory tube

Answer 63

1st pharyngeal groove

Question 64

More human appearance

Answer 64

Period of the Embryo (7th Week)

Question 65

A third of the face added lateral to reach nostril.

Answer 65

Period of the Embryo (7th Week)

Question 66

philtrum

Answer 66

Upper lip (Period of the Embryo (7th Week)

Question 67

The upper lip has fused, producing a ____.

Answer 67

Medially located philtrum (Period of the Embryo (7th Week)

Question 68

Ears are formed

Answer 68

Period of the Embryo (7th Week)

Question 69

Eyelids develop

Answer 69

Period of the Embryo (7th Week)

Question 70

A third of the face has been added lateral to each nostril.

Answer 70

Period of the Embryo (7th Week)

Question 71

The mouth is limited in size with the change in facial proportions.

Answer 71

Period of the Embryo (7th Week)

Question 72

The danger of cleft lip has passed.

Answer 72

Period of the Embryo (7th Week)

Question 73

The medial & nasal processes have emerged in this period.

Answer 73

Period of the Embryo (7th Week)

Question 74

Auricles of the ear have developed as well.

Answer 74

Period of the Embryo (7th Week)

Question 75

The ear hillocks have fused and grown to form the ears (auricles).

Answer 75

Period of the Embryo (7th Week)

Question 76

The ridges around the eyes will soon develop into eyelids

Answer 76

Period of the Embryo (7th Week)

Question 77

Because the face develops on the surface of the brain, defects of the anterior brain may result in developmental alteration of the facial form.

Answer 77

Period of the Embryo (7th Week)

Question 78

8th - 12th week fetus triples its length, from 20 to 60 mm

Answer 78

Period of Fetus

Question 79

Eyelids and nostrils form and close

Answer 79

Period of Fetus

Question 80

Relatively increase in Mandibular size

Answer 80

Period of Fetus

Question 81

Anteroposterior maxillomandibular relationship - aprons that of newborn infant

Answer 81

Period of Fetus

Question 82

aprons that of newborn infant

Answer 82

Anteroposterior maxillomandibular relationship

Question 83

Increase in size and change in proportions.

Answer 83

Period of Fetus

Question 84

Great changes have taken place in the facial structures

Answer 84

Period of Fetus

Question 85

But the changes seen in the last 2 trimester of intrauterine life are largely just increase in size & change in proportions.

Answer 85

Period of Fetus