LESSON Flashcards
Study of prenatal development of an organism
Embryology
Branch of anatomy study structural changes from fertilization to maturity
Developmental anatomy
Give some importance of embryology
- Understanding of the growth and development of species before birth
- Understand the relationships between tissues and organs and relative changes in position during development
Who wrote the first treatise on embryology?
Aristotle
Who described the ovarian follicle?
Regnier de graaf
What are the fields of embryology?
- descriptive embryology
- Comparative embryology.
- Experimental embryology.
- Chemical embryology.
- Teratology.
The study of morphological changes that occur in cells, the progressive status of prenatal development
Descriptive embryology
Study of similarities and differences among various organism
Comparative embryology
The study of analysis that determined that influence prenatal development
Experimental embryology
Study which employee are you biochemical, biophysical, and biosiological techniques
Chemical embryology
Division of embryology in pathology dealing with abnormal development
Teratology
Process of growth and development of embryo from fertilization to birth
Prenatal development
Process of becoming pregnant from fertilization to implantation
Conception
The time between conception and Birth
Gestation
The time from fertilization to the earliest of organ development
Embryonic period
An organism in earliest stage of growth and differentiation
Embryo
The time between the embryonic period and parturition
Fetal period
This is the born young or offspring of an animal that develops from the embryo
Fetus
This is growth and development from birth to adult
Postnatal or postpartum development
This is the formation of body structures and organs that requires cell division and cell differentiation
Embryogenesis or argonogenesis
What are the two requirements in embryogenesis?
Cell division and cell differentiation
The sheet of cells which give rise to all tissues and organs of the body
Germ layer
What are the primary germ layers?
- ectoderm - outermost layer
- Mesoderm - middle layer
- Endoderm - innermost layer
This type of tissue is composed of cells that dress on the basal lamina and closely together at the lateral surface
Also may differentiate into mesenchyme
Epithelium
What are the two types of epithelium
Simple epithelium - single layer
Stratified epithelium - several layer
This type of tissue which connects and support other tissues of the body
Connective tissue
What are the two types of connective tissue?
Embryonic tissue - during the development of the embryo ex. Mesenchyme, mucoid
Adult connective tissue - areolar, dense, cartilage
Type of tissue of loosely and irregularly embryonic cell separated by an extensive extra cellular matrix
Also, it present and differentiates into adult structures as the embryo gross
Mesenchyme
Abnormalities that arise during prenatal development due to hereditary environment factors
Congenital malformations
Position use in embryology
- Dorsal
- Ventral
- cephalic - head of the embryo
- Rostral
- caudal
- mesial - middle part of the embryo
- Lateral - side of the embryo
What do you call in the structures that have the same or similar function among species?
Homologous structures
This study is all vertebrates share a basic pattern of organization also most noticeable during embryology
Comparative anatomy
It is covered by the ectodermal epithelium
Body
If is a long hollow structures that extend from the head to the tail, also along the body beneath the ectodermal epithelium
Neural tube
Long hollow structures which runs the length near ventral midline of thebody
Gut tube or primitive gut
It is the segmented portion of mass located lateral to the neural tube
Partial or dorsal mesoderm
Narrow band of mesoderm lateral to paraxial mesoderm
Intermediate mesoderm
Portion of mesoderm lateral to the intermediate mesoderm
Lateral mesoderm
Long rod that extends from the head to the tail located at the middle line of the embryo
Notochord
Slightly curved tube located in the ventral midline beneath the caudal part of the pharynx of the embryo
Head
