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lab 43

physiology of reproduction

QuestionAnswer
haploid half the normal compliment of chromosomes. Or SEx cell chromosomes.
diploid 23 pairs of homologues chromosomes
tetrad a set of 4 chromatids
synapsis the making of a homologues pair
dyad sister chromatids
chromosome a set of chromatids holding all the genetic information for zygote.
centromere holds chromatids together
spermatogonium primitive stem cells for making sperm located at the tubule periphery (outside building in)
Primary spermatocyte destined to undergo meiosis. These cells grow towards the lumen of the tubules
Secondary spermatocyte after the first meiosis. dna doesnt replicate after this
spermatids soon to grow into sperm after spermiogenesis (or striping the extraneous cytoplasm)
lydig (interstitial) cells Outside tubules and release testosterone
sertoli (sustentacular) cells inside the cells, nuturing caring, squished, longish
acrosome helmet of sperm, has digestive enzyme that eats teh outer layer of the ovum
midpiece middle of sperm, had mitochondria used for energy
tail of sperm used to whip around for energy
oogonium egg stem cell
primary oocyte the prophase of meiosis I (growth phase)
primordial follicles 1st follicle, squamous single layer cells
primary folicle 2nd follicle when it changes to cuboidal cells, produces estrogens
secondary oocyte after the first meiosis division the daughter cells are produced. This one and another one very small called a polar body
ovum only an ovum and not a secondary oocyte when the sperm penetrates
graafian follicle where the egg is connected to the follicle at the top or any other place having a space in the follicle
antrum space between egg and inside of the outside of the graafian follicle
zona pellucida space between the egg and the granulosa cells
granulosa cells surrounds the egg in the graffian follicle
corona radiata when the egg comes out of the ovary
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