問題一覧
1
the human reproductive system produces, stores, nourishes, and transports functional male and female reproductive cells called
games
2
the human reproductive system produces, nourishes, and transports functional male and female reproductive cells called
gametes
3
fertilisation, also known as conception, is where a male gamete and a female gamete…
unite
4
a ? is the term used for the single cell created by the fusion of a male gamete with a female gamete
zygote
5
the gradual transformation of a single cell into a functional adult is the process of ? which is directed by hormones of the reproductive system
development
6
the reproductive system includes each of the following components excepr
pineal structures
7
in both male and females, the reproductive system ducts are connected to chambers and passageways, constituting the ? that open to the exterior of the body
reproductive tract
8
in adult males, the testes secrete sex hormones called
androgens
9
during emission, mature spermatozoa travel along a lengthy duct system where they are mixed with secretions of accessory glands forming
semen
10
in adult human females, the ovaries typically release only one immature gamete called an oocyte per
month
11
the immature oocyte travels along short uterine tubes, ending in a uterus, and a short passageway called the ? connects the iterus with the exterior
vagina
12
during sexual intercourse, ejaculation of the male introduces semen into the vagina and the ? ascend the female reproductive tract
spermatozoa
13
after initialising of fertilisation, the oocyte matured into an ovum, and the uterus is enclosed to support the next step of development into a
embryo
14
proceeding from a make testis, spermatozoa travel within each of the following except
vas efferens
15
accessory organs of the male reproductive system, which secrete various fluids into the ejaculatory ducts and urethra, include each of the following excepr
bladder
16
the male external genitalia consist of the
scrotum and penis
17
in the testes, ? are responsible for the produyof androgens, the dominant sex hormones in males
interstitial (leydig) cells
18
spermatozoa are generated by the process of spermatogenesis, which involved three integrated processes in the following order
mitosis, meiosis, spermiogenesis
19
spermatogonia (stem cells) divide by ? to produce daughter cells, some of which differentiate into primary spermatocytes
mitosis
20
meiosis is a special form of cell division involved in gamete production, where gametes contain
23 chromosomes (half the normal set)
21
in the semniferous tubules, meiotic divisions that begin witj primary spermatocytes produce
spermatids
22
spermatozoa are
among the most highly specialised cells in the body
23
the principle organs of the female reproductive system include each of the following excepr
urethra
24
which of the following functions do the ovaries not perform
secretion of follicle stimulating hormone (FSH)
25
the interior tissues, or ? of the ovary can be divided into superficial cortex and deeper medulla
stroma
26
oogenesis begins before a woman’s birth, accelerates at puberty, and ends at menopause, oogensis occurs monthly as part of the
ovarian cycle
27
the female stem cells, oogonia, complete their ? divisions before birth
Mitotic
28
between the ? if the female fetal development, the daughter cells prepare to undergo meiosis
third and seventh month
29
after undergoing first steps of meiosis the process comes to a halt and tbf primary oocytes remain in a state of suspended development until the individual reaches puberty when rising levels of ? trigger start of ovulation
FSH
30
not all primary oocyte produced during development will survive until puberty and while the ovaries have around 2 million primordial follicles at birth degeneration by a process called ? results in a drop in this number to around 400,000 by puberty
atresia
31
the follicular phase is known as
preovulatory phase
32
which step occurs after ovulation
formation of the corpus luteum
33
the menstrual cycle averages 28 days and can be divided into three stages on which order
menses, proliferative phase, secretory phase
34
during menses, there is a degeneration of the functional zone of the endometrium, which is sloughed by a process called
menstruation
35
In the days after mensus, there is a functions reorganisation for restoration of the functional zone of the endometrium, stimulated and sustained by
estrogens
36
the secretory phase of the uterine cycle lasts around
14 days
37
the activity of th femal reproductive tract is under hormonal control, involving an inter-play between secretions of both the ? and the gonads to coordinate the ovarian and uterine cycles
pituitary glands
38
which of the following is not an estrogens circulating in the bloodstream
estragone
39
each of the estrogens have similar effects on target tissues and these include each of the following except
initiating shedding of the endometrium
40
mammary glands are specialised organs that are controlled mainly by hormones of the reproductive system and by the ?, a temporary structure that provides nutrient for embryo
placenta
41
? usually defined as time of ovulation and menstruation ceases
menopause
42
how many spermatozoa are produced from each spermatogonium
16
43
what is the main role of progesterone during the luteal phase of the ovarian cycle
prepare the endometrium for implantation of the embryo
44
which is the common precursor for all sex hormones
cholesterol
45
sertoil cells perform all of the following functions except
secretion of androgens
46
at which stage of life are testosterone levels highest
puberty
47
what is the main stimulus for ovulation
release of LH from pituitary gland
48
what is the correct order of stages of follicle development in the ovarian cycle
primary oocyte - primary follicle - mature follicle - ovulation - corpus luteum
49
what happens to hormone levels during menstruation
estradiol and progesterone fall
50
which hormone is responsible for the inhibition of FSH release from the pituitary gland
inhibin
51
which sex hormone has a pronounced effect on skeletal muscle growth
testosterone
52
during the early portion of pregnancy, the corpus luteum secretes
progesterone
53
in the follicular stage the ovary is
maturing a follicle
54
If the duration of the ovrian cycle is 30 days, what is the duration of the luteal phase
16 days
55
what effect would a blockage of progesterone receptors in the uterus have on the endometrium
inhibition of development
56
home use kits for determining a woman’s fertility period depend on the presence of which hormone in the urine
luteinising hormone (LH)
57
in human males, testosterone is produced mainly by the
leydig cells
58
why does the vagina environment have an acidic pH
to prevent infections
59
what would be the consequence of blockage of both uterine tubes
sterility
60
which of the following is not a male secondary sexual characteristic
increased fat in buttock