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23 Cards in this Set

  • Front
  • Back
secretes mucus, fructose, and prostaglandins
seminal vesicle
secrete milky alkaline fluid; neutralize acidity
prostate gland
lysozome containing enzyme to penetrate egg; originates from golgi body
acrosome
provide nourishment to the spermatids to develop into sperm
sertoli cells
glycoprotein layer that insures fertilzation occurs only between egg and sperm
vitelline layer
this portion of the egg has the yolk
vegetal pole
solid ball of cells
morula
early cleavage in deuterostome has this pattern
radial
cleavage in protostomes
spiral
cleavage can individually complete normal development
indeterminate cleavage- radial
hollow sphere of cells
blastula
center cavity formed by gastulation
archenteron
ourter membrane for gas exchange, forms placenta
chorion
transports waste products to the placenta; forms umbilical cord
allantois
fluid filled cavity that cushions the developing embryo
amnion
membrane digests the yolk; blood vessels transfer the nutrients to embryo
yolk sac
cells on the dorsal surface of mesoderm germ layer form this stiff rod that provides support
notochord
when sperm penetrates frog egg; it reorganizes the cytoplasm to look like this
gray crescent
cleavage in birds that results in a flattenend disk shaped region
blastodisc
embeds the endometrium of the uterus; HCG to maintain corpus luteum; chorion/ placenta
trophoblast
control development by turning on and off other genes that code for substances that directly affect development
homeotic genes
undirected change of speed of animal's movements in response to stimulus
kinesis
directed movement in repsonse to stimulus
taxis