Ch. 3
what are per-implantation Developmental Disturbances
ectopic pregnancy
number of chromosomes
the tongue development
8th week
10-11th week
11-13th week
8= Lingual dorasal, Circumvallate, foliate, fungiform
10-11= filiform
11-13= taste buds
lens placodes is
otic placodes is
Nasal placodes is
eye
ear
nasal fossa and olfactory sytem
what are the framework of the house (bell stage) support the enamel
Stellate and Stratum
what are the two categories of muscle classification
Voluntary= Stirated, skeletal
Involuntary= smooth, cardiac
what are the two period in the first trimester
Pre-implantation
Embryonic
primary palate is formed what week
Secondary palate is formed what week
5th week= maxillary anterior incisors
6th week= contains canines and posterior teeth
cleft lip is failure of what
maxillary process with medial nasal process
Two tissues separated by basement membrane are
Ectoderm
Ectomesenchyme
what are the three layers of epithelium
•Epidermis
•Basement membrane
•Dermis (connective tissue)
what is the difference between Meiosis and Mitosis
Meiosis with sperm and egg
MItosis self duplication (i= myself) Hint
what is the most critical period of prenatal development
embryonic period
Third week that the primitive streak (ectoderm) began the formation of the what
cephalic and caudal end (oropharyngeal and cloacal membrane).
hereditary anomalies during the initiation are
Anodontia: Absence all teeth
Hypodontia: absence of one or more teeth
Supernumerary: Development of one or more extra teeth
what are the classification of connective tissue
adipose
elastic
reticular
implantation is prepared endometrium
what is Trophoblast and Embryoblast
Trophoblast= suppottive tissue
embryoblast = embryo
what is the primitive mouth called
Stomodeum
Branchial arches are stacked bilateral swellings of what
tissue include mandible 1st arch, ectoderm, endoderm, mesoderm
apposition of enamel matrix secreted by
Tome’s process of ameloblasts theses are lost after Ameloblasts
what are the two types of nerve
Sensory- Afferent
Motor- Efferent
primtive streak is part of the what
Ectoderm- skin
Branchial arch NOTE: 5th arch often absent or insignificant what is
I, II,III, IV, VI, V
I: Meckel’s Cartilage, mandible
II: Reichert’s, hyoid and middle ear
III: unnamed; parts of hyoid, pharyngeal muscle
IV and VI: unnamed, larynx and pharynx
V: often absent or RUDIMENTARY which means temporary
ALL THREE embryonic layers are involved in facial development.
what is Ecto, Meso, Endo
Ecto: outside skin, sensory nerves
Meso: Everything!!! Muscles (heart), blood, bones, reproductive organs, lymphatic system
Endo: inside…digestive and lungs, liver and pancreas
what will provide odontoblastic cells and dentin
outer cells of dental papilla
what are the 4 basic tissue type
Epithelial
Connective
Muscle
Nervve