Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
morula
|
solid ball of cells at the 16-32 stage
|
|
|
blastula
|
hollow ball of cells with a bastocoel
|
|
|
gastrula
|
after gastrulation with three germ layers
|
|
|
ectoderm
|
will become skin, hair, nails, brain
|
|
|
mesoderm
|
will become muscles, heart, respiration, and urinary systems
|
|
|
endoderm
|
will become lining of the disgestive, urinary, and respiratory tracks
|
|
|
gastrulation
|
ectoderm becoming endoderm
|
|
|
germ layers
|
ectoderm, mesoderm, endoderm
|
|
|
blastocoel
|
hollow, fluid-filled cavity in the blastula
|
|
|
tissue
|
group of cells with similar structure and function
|
|
|
invagination
|
cells push into the blastocoel
|
|
|
archenteron
|
primitive gut which forms during gastrulation
|
|
|
blastopore
|
hole the blastula, becomes the anus
|
|
|
coelom
|
body cavity lined by mesoderm
|
|
|
coelom
|
becomes the thoracic and abdominal cavities
|
|
|
notochord
|
dorsal supporting rod which exists in all chordates sometime in their life history
|
|
|
notochord
|
becomes the vertebral column
|
|
|
nueral plate
|
becomes the spinal chord
|
|
|
somites
|
clumps of muscle around the nueral plate
|
|
|
somites
|
become the back muscles
|
|
|
neurulation
|
development of the nervous system and the brain in an embryo
|
|
|
tottipotency
|
ability of all cells to develop into an organism
|
|
|
maternal determinants
|
chemicals which influence the course of development
|
|
|
cytoplasmic segregation
|
the parceling of signals present in the egg cytoplasm to the cells which result from cleavage
|
|
|
cleavage
|
cell division without growth
|
|
|
induction
|
ability of one embryonic tissue to influence the development of another tissue by use of chemical signals
|
|
|
specialization
|
process by which cells become specialized in structure and function
|
|
|
morphogenesis
|
emergence of shape in tissues, organs, or an entire embryo
|
|
|
development
|
growth, morphogenesis, and specialization
|
|
|
homeotic genes
|
genes which control the overall body plan by controlling the fate of groups of cells during development
|
|
|
homeobox
|
nucleotide sequence located in all homeotic genes and serve to identify portions of the genome
|
|
|
chorion
|
carries out gas exchanges
|
|
|
amnion
|
provides protection in the form of amniotic fluid
|
|
|
allantois
|
collects nitrogenous wastes
|
|
|
yolk sac
|
provides nourishment in the form of proteins/lipoproteins
|
|
|
placenta
|
forms from the chorion and the uterine wall, allows nutrients and wastes to pass between the mother and the embryo
|
