DH220 Quiz #4 Ch. 1-3

growth by layering outside of tissue mass with firm or hard tissue such as cartilage

Appositional growth

trophoblast cells and inner mass of cells forming embryo

Blastocyst

pad of underlying adipose

Buccal fat pad

tail end of structure

Caudal end

Head end of structure

Cephalic end

Larger mushroom-shaped along sulcus terminalis

Circumvallate lingual papillae

membrane at caudal end of embryo at future anus

Cloacal membrane

Development of different cell types

Cytodifferentiation

Change in embryonic cells to become distinct structurally and functionally

Differentiation

Small inner mass of embryonic cells in blastocyst

Embryoblast layer

Study of prenatal develop development

Embryology

Prenatal development time for embryo from 2nd to 8th week

Embryonic period

Superior layer in bilaminar disc

Epiblast layer

Prenatal development for fetus from 3rd to 9th month

Fetal period

Slender thread-like forms

Filiform lingual papillae

Anterior part of future digestive tract or primitive pharynx forming oropharynx

Foregut

Smaller mushroom shaped on dorsal surface of tongue

Fungiform lingual papillae

Posterior part of future digestive tract

Hindgut

Development of different tissue types

Histodifferentiation

Inferior layer in bilaminar disc

Hypoblast layer

Action of one group of cells on another lead leading to development pathway in responding tissue

Induction

Growth from deep within tissue or organ

Interstitial growth

XX chromosomes for female or XY chromosomes for males

Karyotype

Corner of mouth where upper and lower lips meet

Labial commissure

Process of reproductive cell production

Meiosis

Embryonic connective tissue

Mesenchyme

Middle part of future digestive tract

Midgut

Development of differing form to create specific structure

Morphodifferentiation

Form of structure

Morphology

Specialized group of cells developed from neuroectoderm migrating from crests of neural folds and disperse within mesenchyme

Neural crest cells

Specialized group of cells differentiating from ectoderm

Neuroectoderm

Membrane at cephalic end of embryo

Oropharyngeal membrane

Major gland from zygomatic arch to posterior border of mandible

Parotid salivary gland

Vertical groove on midline of upper lip

Philtrum

Time before implantation

Preimplantation period

Processes from start of pregnancy to birth

Prenatal development

furrowed rod shaped thickening in midline of embryonic disc

Primitive streak

Earliest recognizable structure during stages of development in organ or tissue during prenatal development

Primordium

Controlled cell cellular growth

Proliferation

Paired cuboidal aggregates of cells differentiated from mesoderm

Somites

Groove posteriorly on dorsal surface of tongue surface

Sulcus terminalis

Environmental agents or factors causing developmental disturbances

Teratogens

Embryonic disc with three layers

Trilaminar embryonic disc

Layer of peripheral cells of blastocyst

Trophoblast layer

Midline muscular structure

Uvula

Fertilized egg from union of ovum and sperm

Zygote