human reproduction I

LH

LH

________ stimulates ovulation and results in the formation of "holes "in the ovary called corpus luteum.

Ovulation

________ occurs normally halfway through the cycle, around day 14 when the egg travels through the oviduct.

pituitary gland

The ________ produces FSH, stimulating the development of a follicle in the ovary.

muscular bag

A(n) ________, in which lining, a zygote is implanted to develop and grow into a fetus, nourishing fetus development.

sperm cells

Is a gland, therefore it produces hormones, plus it produces semen providing ________ with nutrients.

follicle

The ________ becomes the corpus luteum, which produces progesterone.

amino acids

Produces seminal liquid full of nutrients (proteins, sugars, water, and ________) to keep the sperm alive until fertilization.

FSH

________ stimulates egg maturation in the follicles of the ovary and stimulates estrogen secretion.

Endometrium breaks

________ and is removed through the vagina.

storage of energy

Its cytoplasm contains ________ to keep the zygote alive until implantation.

estrogen

An egg develops on the inside of the follicle, which produces ________.

Progesterone

________ stays low until ovulation has occurred, causing the endometrium to thicken further.

Primary sexual characteristics

________: are present during the development of a fetus in a uterus, basically the differences between female or male reproductive organs.

Fertilization

________: The fusion of the nuclei from a male gamete and a female one.

hormones

The ________ that regulate the menstrual cycle are secreted by the ovary and the pituitary gland.

estrogen levels

When ________ rise, it stimulates the release of LH from the pituitary gland too.

Progesterone levels

________ are lower when fertilization does not occur, and therefore cause menstruation.

Secondary sexual characteristics

________: changes that occur during puberty and are controlled by the release of hormones (testosterone for males and estrogen for females)

Estrogen

________ stimulates endometrium development after menstruation and after ovulation inhibits LH and FSH production.

Progesterone

________ also inhibits FSH and LH production.

Estrogen

________ causes the development and repair of the endometrium while inhibiting FSH production, just so that no more egg cells are matured.

Progesterone

________ maintains the uterus lining, but if the egg cell isnt fertilized corpus luteum breaks down and progesterone levels drop causing menstruation.

contains maturing egg cells that develop responding to the hormones being released

estrogen and progesterone

Fertilization

The fusion of the nuclei from a male gamete and a female one

Primary sexual characteristics

are present during the development of a fetus in a uterus, basically the differences between female or male reproductive organs

Secondary sexual characteristics

changes that occur during puberty and are controlled by the release of hormones (testosterone for males and estrogen for females)

Average duration

28 days per cycle

Average menstruation

5-7 days, when it starts a new menstrual cycle begins too