Chapter 11 - Reproductive system Flashcards
bulbo-urethral gland
Small yellow gland that secretes lubricating fluid into urethra
cervix
between uterus and the vagina
clitoris
erectile organ or the female
when the corpus luteum degenerates it forms
mass of scar tissue called the corpus albicans
corpus luteum
forms from the ruptures follicle when the egg is released form the ovary
epididymis
tubule behind each testis where the sperm mature
erectile tissue
spongey tissue in the penis that fills with blood to form an erection
endometrium
soft mucus membrane that lines the uterus
fimbriae
finger like projections of the fallopian tube, wafts the releases ova into the tube
polar body - purpose
haploid cell produced in oogenesis, contains nucleus and a little amount of cytoplasm to ensure that the mature ovum receives majority of the cytoplasm giving it the best chance of survival
follicle - when matures
fluid filled sac that contains an immature ova, as it matures it secretes hormones like estrogen that regulate the menstrual cycle
FSH - follicle stimulating hormone
Hormone that stimulates development of the follicle in the ovary
gametogenesis
formation and development of the gametes. oogenesis - ova. spermatogenesis - sperm
gonadotropins
hormones that affect the sex organs
hormone definition
chemical secreted by an endocrine gland that affects the functioning of a cell/organ
HCG
Human chorionic gonadotropin. produced by the placenta during pregnancy, maintains the corpus luteum until placenta is developed enough to secrete estrogen and progesterone
interstitual cells
located between the seminiferous tubules. they secrete testosterone.
labia - 2 types
minora - inner
majora - outer
folds of skin lining the opening to the vagina and urethra
lobule
compartment within the testis that contains seminiferous tubules
LH
luteinising hormone, promotes final maturation of the ovarian cycle and the formation of the corpus luteum
Menarche
first period, marks commencement of puberty
menopause
end of menstruation, period will cease
menstruation
periodic discharge of blood and tissue fluid due to the breakdown of the lining of the uterus
menstrual cycle
regular series of changes that take place in the walls of the uterus of a non pregnant female
Estrogen
Female sex hormone, developed/maintains female reproductive structures like the endometrium
Oogenesis
formation and development of the ovum within the ovary
ovarian cycle
regular series of events that take place within an ovary of a non pregnant female
ovaries
female primary sex organs
pituitary gland
pituitary gland located below the brain
primary sex organs
organs that produce gametes. testes and ovaries
progesterone
prepares uterine lining for a fertilised egg
scrotum
pouch outside abdominal cavity which the testes are located
secondary sex organs
organs that assist in the production and bringing gametes together for fertilisation (all the other organs in the female and male reproductive system that arent the gonads)
gonads
primary sex organs, testes and ovaries
secondary sexual characteristics
characteristics associated with an individuals sex, not involved in sexual reproduction
seminal fluid
semen. liquid that nourishes and aids the transport of sperm.
seminal vesicles
secretes fluid rich in glucose in the urethra, fuel source for the spermatozoa
seminiferous tubules
tubules within the lobules of the testes, lined with spermatogonia. They are where sperm are produced
spermatogenesis
formation and development of the spermatozoa
spermatogonia
cells that produce male gametes
spermatozoa
male gametes, called sperm
Testes
Male gonads, produce sperm and the hormone testosterone
testosterone
male sex hormone, secreted by the interstitial cells in the testes. development of male reproductive system and seconday characteristics and immature sperm into mature spermatozoa
urethra
duct that carries urine from the bladder to exterior - in males it also carries semen
fallopian tube
tube that carries ova from the ovary to the uterus
uterus- what is it and role
hollow pear shaped organ in the female reproductive system that protects and nourishes the developing foetus during pregnancy
vagina
canal that leads from the uterus to the exterior of the female body
vas deferens
tube that carries the sperm away from the testis
vulva
female external genitalia
zygote
fertilised egg from which a new individual develops
corpus albicans
scar tissue left in the ovary after the corpus luteum degenerates
negative feedback
As one increases, the other decreases
relate ovarian cycle to menstrual cycle
menstrual cycle prepared endometrium to receive and support a fertilised egg, which is released in ovulation in the ovarian cycle
increased levels of estrogen and progesterone
thickening and vascalarisation of the endometrium
decreased levels of estrogen and progesteron
breakdown of the endometrium, resulting in menstruation
female secondary sexual characteristics
enlarging of the breasts, broadening of the hips, pubic hair
male secondary sexual characteristics
public hair, facial fair, increase in the side of the larynx