miracle of life Flashcards
First organized form of primitive life
tiny protozoan
Where does the tiny protozoan live and what does it use for movement
sea water; cilia and flagella
basic unit of life, how it reproduces, number of chromosomes per cell
cell; cell division; 46
where are eggs made and how many eggs are present in them
ovaries, 250,000 eggs
event wherein follicles which enclose the eggs rupture
ovulation
how will the follicles rupture?
follicles will swell with liquor folliculae
where will the egg wait for the sperm after follicular rupturing
fallopian tube
outermost fringes of fallopian tube brush swollen follicle and which searches for newly-released egg
fimbriae
size of newly released egg
a grain of sand
how the egg is moved from the fallopian tube to the uterus
muscle contractions
no. of hours in which the newly-released egg must be fertilized before disintegrating
24 hours
control male and female reproductive cycles/ reproductive ability
sex hormones
male organ which produces sperm
seminiferous tubules in testicles
where sperms are stored
epididymis
produces lubricating fluid to aid in sperm’s journey
cowper’s gland
produces an alkaline fluid which protects sperm
prostate gland
composition of semen
sperm + lubricating fluid from cowper’s gland + alkaline fluid from prostate gland
route of sperm from production to ejaculation (and what each organ does)
seminiferous tubules (sperm production) -> epididymis (sperm storage) -> vas deferens -> seminal vesicle (secrete sugars) -> prostate gland (alkaline fluid) -> cowper’s gland (lubricant) -> urethra
keeps the testicles suspended and away from body heat
scrotum
connects each nurse cell to over 150 sperm cells throughout the tubule; enable nurse cells to feed and protect maturing sperm
tendrils
give 5 causes of sperm deformity
any of these: slight elevation of temperature, environmental conditions, overcrowding, stress, smoking, chemical pollution of air and water, occupational hazards, radiation, poor nutrition, modern clothing
silent languages
desire and physical love (eyes, skin)
barriers to fertilization
high percentage of defective sperm has lowered odds of fertilization, acidic environment of vagina, femal immune system will destroy them, try to ertilize the first round object they find
this is secreted by the cervix during ovulation which provides tiny channels directing the spem to egg
mucin
fertilized egg that has started to divide
zygote
how many days will it take for the blastocyst to be implanted at the uterine lining
5 days
provides nourishment to the embryo, connected to uterine lining
placenta
what happens 5 weeks after fertilization
nose of embryo takes shape
in how many weeks can you call the embryo a fetus
10 weeks
actively turning inside the mother (what week)
16 weeks
(what week) can the fetus bring its hands together and suck its thumb?
14 weeks
cleavage of human embryo
holoblastic rotational
