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