Exam 4 - Workbook Flashcards
What is the pathway of sperm from the testis to the urethra?
seminiferous tubule, rete testis, epididymis, ductus deferens
Tubular storage site for sperm; hugs the posterior aspect of the testes
epididymis
Cuff of skin encircling the glans penis
prepuce
Site of testosterone production
testes
Surrounds the urethra at the base of the bladder, produces a milky fluid.
prostate
Connective tissue sheath enclosing the ductus deferens, blood vessels, and nerves
spermatic cord
Passageway from the epididymis to the ejaculatory duct
ductus deferens
Produce more than half of the seminal fluid
seminal vesicles
Organ that delivers semen to the female reproductive tract
penis
Conveys both sperm and urine down the length of the penis
urethra
External skin sac that houses the testes
scrotum
spongy tissue
the erectile tissue in the penis
What duct also serves the urinary system?
urethra
structure that provides ideal temperature conditions
scrotum
removed at circumcision
prepuce
the glands producing a secretion that contains sugar
seminal vesicles
What is cut or cauterized during a vasectomy?
ductus deferens
site of spermatogenesis
seminiferous tubule
tubular structure in which sperm mature and become motile
epididymis
fibrous coat protecting the testis
tunica albuginea
primitive stem cell
spermatogonium
Contain 23 chromosomes and ______
secondary spermatocyte, sperm, spermatid
product of meiosis 1
secondary spermatocyte
product of meiosis 2
spermatid
functional motile gamete
sperm
two hormones necessary for sperm production
testosterone, FSH
DNA-containing area of sperm
nucleus
enzyme-containing sac that aids sperm penetration of the egg
acrosome
metabolically active organelles that provide ATP to energize sperm movement
mitochondria
the final product is two daughter cells, each with 46 chromosomes
mitosis
the final product is four daughter cells, each with 23 chromosomes
meiosis
this process involves the phases prophase, metaphase, anaphase, and telophase
mitosis and meiosis
this process occurs in all body tissues
mitosis
this process occurs only in the gonads
meiosis
this process increases the cell number for growth and repair
mitosis
daughter cells have the same number and types of chromosomes as the mother cell
mitosis
daughter cells are different from the mother cell in their chromosomal makeup
meiosis
chromosomes are replicated before the division process begins
mitosis and meiosis
this process provides cells for the reproduction of offspring
meiosis
this process consists of two consecutive divisions of the nucleus; chromosomes are not replicated before the second division
meiosis
chamber that houses the developing fetus
uterus
canal that receives the penis during sexual intercourse
vagina
usual site of fertilization
uterine/fallopian tube
erects during sexual stimulation (female)
clitoris
duct through which the ovum travels to reach the uterus
uterine tube
membrane that partially closes the vaginal canal
hymen
primary female reproductive organ
ovary
move to create fluid currents to draw the ovulated egg into the uterine (fallopian) tube
fimbriae
lining of the uterus
endometrium
muscular layer of the uterus
myometrium
pathway along which an egg travels from the time of its release to its implantation
uterine tube
ligament helping to anchor the uterus
the round ligament
structure producing female hormones and gametes
ovary
homologue of the male scrotum
labium majus
forming part of the primary follicle in the ovary
primary oocyte
in the uterine tube before fertilization
secondary oocyte
in the mature, or Graafian, follicle of the ovary
secondary oocyte
in the uterine tube shortly after sperm penetration
ovum
cells that produce estrogen
follicle (granulosa) cells
grandular structure that produces progesterone
corput luteum
oocytes
central cells in all follicles
Are there any oogonia in a mature female’s ovary?
no
Into what area is the ovulated cell released?
peritoneal cavity
When is a mature ovum (egg) produced in humans?
after sperm penetration occurs
What structure in the ovary becomes a corpus luteum?
ruptured (ovulated) follicle
What are the four final cell types produced by oogenesis in the female?
one ovum; three polar bodies
What is the final product of spermatogenesis in males?
four spermatids (sperm)
What happens to the tiny cells nearly devoid of cytoplasm ultimately produced during oogenesis?
they deteriorate because they lack nutrient-containing cytoplasm
What name is given to the period of a woman’s life when her ovaries begin to become nonfunctional?
menopause
promotes growth of ovarian follicles and production of estrogen
follicle-stimulating hormone (FSH)
triggers ovulation
luteinizing hormone (LH)
inhibit follicle-stimulating hormone release by the anterior pituitary
estrogen and progesterone
stimulates luteinizing hormone release by the anterior pituitary
estrogen
converts the ruptured follicle into a corpus luteum and causes it to produce progesterone and estrogen
LH
maintains the hormonal production of the corpus luteum
LH
Lack of this causes the blood vessels to kink and the endometrium to slough off (menses)
estrogens and progesterone
this hormone causes the endometrial glands to begin the secretion of nutrients
progesterone
the endometrium is repaired and grows thick and velvety
estrogens
this hormone maintains the myometrium in an inactive state if implantation of an embryo has occurred
progesterone
glands are formed in the endometrium
estrogens
this hormone is responsible for the secondary sex characteristics of females
estrogens
What portion of the sperm actually enters the oocyte?
just its head (the nucleus)
the fertilized egg
zygote
secretes estrogen and progesterone to maintain the pregnancy
placenta
cooperate to form the placenta
chorionic villi and endometrium
fluid-filled sac surrounding the developing embryo/fetus
amnion
attaches embryo to the placenta
umbilical cord
finger-like projections of the blastocyte
chorionic villi
embryo after 8 weeks
fetus
the organ that delivers nutrients to and disposes of wastes for the fetus
placenta
which two hormones are essential to initiate labor in humans
oxytocin and prostaglandins
which hormone is responsible for milk production? milk ejection?
prolactin; oxytocin
Labor is an example of a positive feedback mechanism. What does that mean?
The response to the stimulus enhances the stimulus. The more a baby descends into the pelvis and stretches the uterus, the more oxytocin is produced and the stronger the contractions become.