Developmental Biology Flashcards
Development
progressive path of molecular, cellular, and morphological changes by which a single cell becomes an “adult” multicellular organism
3 D’s of Development
1.) Division of cell
2.) Differentiation
3.) Distribution
Division of cell
E Unum Plurbius
- out of one cell comes many cells
Differentiation
E Plurbius Unum
- out of many cells comes one tissue
Distribution
One cell –> population of cells –> becomes different cell lines, tissues, organs, systems (what type?)
Lineage of organization
1.) atom
2.) molecule
3.) macromolecule
4.) organelle
5.) cell
6.) tissue
7.) organs
8.) organ system
9.) organism
Gross
Visual eye
Microscopic
organelles, cells, tissues
Cytology
study of cells
Cell
fundamental unit of biological activity
Tissue
assembly of cells working together to perform a particular function
Histology
study of structure and function of tissues and their cellular components
Tissue composition
1.) Cells
2.) Intercellular substances
3.) Body fluids
Organology
study of organs, groups of functional types of tissues
Genotype
what your specific genes are saying
Development/Environment
environmental changes affect development
Ex. mother with drug use could cause obesity in child
“Evolution is the action of Ecology on Embryology”
How we interact with our physical environment
epigenetics as a factor of development
Can stress impact growth and development?
Yes
Gamete production
The sex cells
- sperm or egg
Location:
- testis or ovary
Gamete union
egg + sperm–> union
sperm locates egg
sperm enters egg
23+23 chromosomes
Protect and nourish fertilized egg
- female reproduction is key
- internal development
- continuation of species
Reproductive system purpose:
1.) Gamete production
2.) Gamete union
3.) Protect and nourish fertilized egg
Sperm production happens where?
Testicle
Egg production happens where?
Ovaries