BIO 2A03 EXAM PREP | QUESTIONS AND ANSWERS |
2026 UPDATE | SOLVED 100% CORRECT.
viviparous Answer - internal fertilization AND development
Oviparous Answer - external or internal fertilization BUT external development
w nourishment from yolk
Ovoviviparous Answer - combination. eggs are fertilized AND developed
INternally. nourishment from yolk
follicle cells (location) Answer - surround oocytes
when does meiotic arrest occur in oocytes Answer - during the fetal stage
when does meiosis I occur in oocytes Answer - during ovulation
when does meiosis II occur in oocytes Answer - after fertilization
monoestrous Answer - single estrous cycle in a year. anatomical and behavioral
changes to inform mate
Polyestrous Answer - more than one estrous cycle per year. less obvious
changes in behaviour
,granulosa cells (come from) Answer - follicular cell proliferation
theca cells (location) Answer - surround granulosa cells
antrum (what and location) Answer - fluid filled sac in mature (dominant)
follicles
what marks the start of the luteal phase Answer - when mature oocytes enter
the uterine (fallopian) tube
what are the three stages of the uterine cycles Answer - 1. menstrual phase
2. proliferative phase
3. secretory phase
what happens during the menstrual phase Answer - uterine lining sheds
what happens during the proliferative phase Answer - regrow endometrial
tissue
thicken smooth muscle (myometrial tissue)
blood vessel proliferation
what is the general purpose of the proliferative phase Answer - to prep for
possible pregnancy
what happens during the secretory phase Answer - endometrial glands secrete
fluid rich in glycogen
more blood vessel proliferation
, what happens to FSH and LH during the early follicular phase and why Answer
- both slightly increase because estrogen and progesterone are slightly
decreasing
(negative regulators are decreasing)
the early follicular phase can also commonly be called Answer - the menstrual
phase
in females, what does an increase in FSH induce (mainly) Answer - follicle
development
during follicle development, what kind of receptor is expressed and where
Answer - LH receptors on theca cells
LH stimulates the release of Answer - androgens (estrogen and progesterone
precursors)
where do androgens develop into estrogen and progesterone Answer -
granulosa cells
the dominant follicle increases the secretion of _________, resulting in the
increase or decrease of _________ Answer - 1. estrogen
2. decrease of FSH and LH via negative feedback
inhibin (location and function) (females) Answer - granulosa cells, inhibit FSH
secretion
2026 UPDATE | SOLVED 100% CORRECT.
viviparous Answer - internal fertilization AND development
Oviparous Answer - external or internal fertilization BUT external development
w nourishment from yolk
Ovoviviparous Answer - combination. eggs are fertilized AND developed
INternally. nourishment from yolk
follicle cells (location) Answer - surround oocytes
when does meiotic arrest occur in oocytes Answer - during the fetal stage
when does meiosis I occur in oocytes Answer - during ovulation
when does meiosis II occur in oocytes Answer - after fertilization
monoestrous Answer - single estrous cycle in a year. anatomical and behavioral
changes to inform mate
Polyestrous Answer - more than one estrous cycle per year. less obvious
changes in behaviour
,granulosa cells (come from) Answer - follicular cell proliferation
theca cells (location) Answer - surround granulosa cells
antrum (what and location) Answer - fluid filled sac in mature (dominant)
follicles
what marks the start of the luteal phase Answer - when mature oocytes enter
the uterine (fallopian) tube
what are the three stages of the uterine cycles Answer - 1. menstrual phase
2. proliferative phase
3. secretory phase
what happens during the menstrual phase Answer - uterine lining sheds
what happens during the proliferative phase Answer - regrow endometrial
tissue
thicken smooth muscle (myometrial tissue)
blood vessel proliferation
what is the general purpose of the proliferative phase Answer - to prep for
possible pregnancy
what happens during the secretory phase Answer - endometrial glands secrete
fluid rich in glycogen
more blood vessel proliferation
, what happens to FSH and LH during the early follicular phase and why Answer
- both slightly increase because estrogen and progesterone are slightly
decreasing
(negative regulators are decreasing)
the early follicular phase can also commonly be called Answer - the menstrual
phase
in females, what does an increase in FSH induce (mainly) Answer - follicle
development
during follicle development, what kind of receptor is expressed and where
Answer - LH receptors on theca cells
LH stimulates the release of Answer - androgens (estrogen and progesterone
precursors)
where do androgens develop into estrogen and progesterone Answer -
granulosa cells
the dominant follicle increases the secretion of _________, resulting in the
increase or decrease of _________ Answer - 1. estrogen
2. decrease of FSH and LH via negative feedback
inhibin (location and function) (females) Answer - granulosa cells, inhibit FSH
secretion
