2 Flashcards
is the cycle is the series of monthly natural changes
menstrual cycle
is the term used to describe the first menstruation
menarche
described the development of ovarian follicles and ovulation, whereas the uterine cycle describes the cyclic changes
ovarian cycle
ovarian cycle is divided into two phases
follicular and luteal
is the first half of the ovarian cycle that occurs during first 14days
follicular phase
is the second half of the ovarian cycle that occurs during dat 14 to 28 lf the menstrual cycle (after egg release)
luteal phase
is the process of becoming pregnant that involves fertilization and implantation
conception
refers to the time required for the dull development of the off spring in the uterus
gestation
average duration of human gestation is about
280 days
eight week of pregnancy
develops process called embryogenesis
is a spherical layer of cells that contains a fluid called cavity called the blastocoel
blastula
mitotic division transforms the blastula into the
blastocyst
process will continue throughout the rest of the gestation period
organogenesis
9 week of gestation
fetus
of gestation the size of the fetus has more than doubled
10-12th week
external human features are now more refined
10-12 week
becomes a site of blood cell production
bone marrow
the head of the fetus becomes more proportion to its body
13-16 wekk
various organs in the body have reached their relative sizes
17-20 week
white hair called ___ starts to cover the body of the fetus
lanugo
the eyelids and eyebrows of the fetus begin to form their definitive shape
20-25
fetus undergoes rapid weight gain
26-30 week
the head of the fetus is normally positioned toward the cervix
26-30
the toenails and fingernails sre visible
31-36 week